AuthManagerTest.php

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<?php

namespace MediaWiki\Auth;

use MediaWiki\Session\SessionInfo;
use MediaWiki\Session\UserInfo;
use Psr\Log\LogLevel;
use StatusValue;
use Wikimedia\ScopedCallback;

class AuthManagerTest extends \MediaWikiTestCase {
    protected $request;
    protected $config;
    protected $logger;

    protected $preauthMocks = [];
    protected $primaryauthMocks = [];
    protected $secondaryauthMocks = [];

    protected $manager;
    protected $managerPriv;

    protected function setUp() {
        parent::setUp();

        $this->setMwGlobals( [ 'wgAuth' => null ] );
        $this->stashMwGlobals( [ 'wgHooks' ] );
    }

    protected function hook( $hook, $expect ) {
        global $wgHooks;
        $mock = $this->getMock( __CLASS__, [ "on$hook" ] );
        $wgHooks[$hook] = [ $mock ];
        return $mock->expects( $expect )->method( "on$hook" );
    }

    protected function unhook( $hook ) {
        global $wgHooks;
        $wgHooks[$hook] = [];
    }

    protected function message( $key, $params = [] ) {
        if ( $key === null ) {
            return null;
        }
        if ( $key instanceof \MessageSpecifier ) {
            $params = $key->getParams();
            $key = $key->getKey();
        }
        return new \Message( $key, $params, \Language::factory( 'en' ) );
    }

    protected function initializeConfig() {
        $config = [
            'preauth' => [
            ],
            'primaryauth' => [
            ],
            'secondaryauth' => [
            ],
        ];

        foreach ( [ 'preauth', 'primaryauth', 'secondaryauth' ] as $type ) {
            $key = $type . 'Mocks';
            foreach ( $this->$key as $mock ) {
                $config[$type][$mock->getUniqueId()] = [ 'factory' => function () use ( $mock ) {
                    return $mock;
                } ];
            }
        }

        $this->config->set( 'AuthManagerConfig', $config );
        $this->config->set( 'LanguageCode', 'en' );
        $this->config->set( 'NewUserLog', false );
    }

    protected function initializeManager( $regen = false ) {
        if ( $regen || !$this->config ) {
            $this->config = new \HashConfig();
        }
        if ( $regen || !$this->request ) {
            $this->request = new \FauxRequest();
        }
        if ( !$this->logger ) {
            $this->logger = new \TestLogger();
        }

        if ( $regen || !$this->config->has( 'AuthManagerConfig' ) ) {
            $this->initializeConfig();
        }
        $this->manager = new AuthManager( $this->request, $this->config );
        $this->manager->setLogger( $this->logger );
        $this->managerPriv = \TestingAccessWrapper::newFromObject( $this->manager );
    }

    protected function getMockSessionProvider( $canChangeUser = null, array $methods = [] ) {
        if ( !$this->config ) {
            $this->config = new \HashConfig();
            $this->initializeConfig();
        }
        $this->config->set( 'ObjectCacheSessionExpiry', 100 );

        $methods[] = '__toString';
        $methods[] = 'describe';
        if ( $canChangeUser !== null ) {
            $methods[] = 'canChangeUser';
        }
        $provider = $this->getMockBuilder( 'DummySessionProvider' )
            ->setMethods( $methods )
            ->getMock();
        $provider->expects( $this->any() )->method( '__toString' )
            ->will( $this->returnValue( 'MockSessionProvider' ) );
        $provider->expects( $this->any() )->method( 'describe' )
            ->will( $this->returnValue( 'MockSessionProvider sessions' ) );
        if ( $canChangeUser !== null ) {
            $provider->expects( $this->any() )->method( 'canChangeUser' )
                ->will( $this->returnValue( $canChangeUser ) );
        }
        $this->config->set( 'SessionProviders', [
            [ 'factory' => function () use ( $provider ) {
                return $provider;
            } ],
        ] );

        $manager = new \MediaWiki\Session\SessionManager( [
            'config' => $this->config,
            'logger' => new \Psr\Log\NullLogger(),
            'store' => new \HashBagOStuff(),
        ] );
        \TestingAccessWrapper::newFromObject( $manager )->getProvider( (string)$provider );

        $reset = \MediaWiki\Session\TestUtils::setSessionManagerSingleton( $manager );

        if ( $this->request ) {
            $manager->getSessionForRequest( $this->request );
        }

        return [ $provider, $reset ];
    }

    public function testSingleton() {
        // Temporarily clear out the global singleton, if any, to test creating
        // one.
        $rProp = new \ReflectionProperty( AuthManager::class, 'instance' );
        $rProp->setAccessible( true );
        $old = $rProp->getValue();
        $cb = new ScopedCallback( [ $rProp, 'setValue' ], [ $old ] );
        $rProp->setValue( null );

        $singleton = AuthManager::singleton();
        $this->assertInstanceOf( AuthManager::class, AuthManager::singleton() );
        $this->assertSame( $singleton, AuthManager::singleton() );
        $this->assertSame( \RequestContext::getMain()->getRequest(), $singleton->getRequest() );
        $this->assertSame(
            \RequestContext::getMain()->getConfig(),
            \TestingAccessWrapper::newFromObject( $singleton )->config
        );
    }

    public function testCanAuthenticateNow() {
        $this->initializeManager();

        list( $provider, $reset ) = $this->getMockSessionProvider( false );
        $this->assertFalse( $this->manager->canAuthenticateNow() );
        ScopedCallback::consume( $reset );

        list( $provider, $reset ) = $this->getMockSessionProvider( true );
        $this->assertTrue( $this->manager->canAuthenticateNow() );
        ScopedCallback::consume( $reset );
    }

    public function testNormalizeUsername() {
        $mocks = [
            $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class ),
            $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class ),
            $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class ),
            $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class ),
        ];
        foreach ( $mocks as $key => $mock ) {
            $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( $key ) );
        }
        $mocks[0]->expects( $this->once() )->method( 'providerNormalizeUsername' )
            ->with( $this->identicalTo( 'XYZ' ) )
            ->willReturn( 'Foo' );
        $mocks[1]->expects( $this->once() )->method( 'providerNormalizeUsername' )
            ->with( $this->identicalTo( 'XYZ' ) )
            ->willReturn( 'Foo' );
        $mocks[2]->expects( $this->once() )->method( 'providerNormalizeUsername' )
            ->with( $this->identicalTo( 'XYZ' ) )
            ->willReturn( null );
        $mocks[3]->expects( $this->once() )->method( 'providerNormalizeUsername' )
            ->with( $this->identicalTo( 'XYZ' ) )
            ->willReturn( 'Bar!' );

        $this->primaryauthMocks = $mocks;

        $this->initializeManager();

        $this->assertSame( [ 'Foo', 'Bar!' ], $this->manager->normalizeUsername( 'XYZ' ) );
    }

    public function testSecuritySensitiveOperationStatus( $mutableSession ) {
        $this->logger = new \Psr\Log\NullLogger();
        $user = \User::newFromName( 'UTSysop' );
        $provideUser = null;
        $reauth = $mutableSession ? AuthManager::SEC_REAUTH : AuthManager::SEC_FAIL;

        list( $provider, $reset ) = $this->getMockSessionProvider(
            $mutableSession, [ 'provideSessionInfo' ]
        );
        $provider->expects( $this->any() )->method( 'provideSessionInfo' )
            ->will( $this->returnCallback( function () use ( $provider, &$provideUser ) {
                return new SessionInfo( SessionInfo::MIN_PRIORITY, [
                    'provider' => $provider,
                    'id' => \DummySessionProvider::ID,
                    'persisted' => true,
                    'userInfo' => UserInfo::newFromUser( $provideUser, true )
                ] );
            } ) );
        $this->initializeManager();

        $this->config->set( 'ReauthenticateTime', [] );
        $this->config->set( 'AllowSecuritySensitiveOperationIfCannotReauthenticate', [] );
        $provideUser = new \User;
        $session = $provider->getManager()->getSessionForRequest( $this->request );
        $this->assertSame( 0, $session->getUser()->getId(), 'sanity check' );

        // Anonymous user => reauth
        $session->set( 'AuthManager:lastAuthId', 0 );
        $session->set( 'AuthManager:lastAuthTimestamp', time() - 5 );
        $this->assertSame( $reauth, $this->manager->securitySensitiveOperationStatus( 'foo' ) );

        $provideUser = $user;
        $session = $provider->getManager()->getSessionForRequest( $this->request );
        $this->assertSame( $user->getId(), $session->getUser()->getId(), 'sanity check' );

        // Error for no default (only gets thrown for non-anonymous user)
        $session->set( 'AuthManager:lastAuthId', $user->getId() + 1 );
        $session->set( 'AuthManager:lastAuthTimestamp', time() - 5 );
        try {
            $this->manager->securitySensitiveOperationStatus( 'foo' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \UnexpectedValueException $ex ) {
            $this->assertSame(
                $mutableSession
                    ? '$wgReauthenticateTime lacks a default'
                    : '$wgAllowSecuritySensitiveOperationIfCannotReauthenticate lacks a default',
                $ex->getMessage()
            );
        }

        if ( $mutableSession ) {
            $this->config->set( 'ReauthenticateTime', [
                'test' => 100,
                'test2' => -1,
                'default' => 10,
            ] );

            // Mismatched user ID
            $session->set( 'AuthManager:lastAuthId', $user->getId() + 1 );
            $session->set( 'AuthManager:lastAuthTimestamp', time() - 5 );
            $this->assertSame(
                AuthManager::SEC_REAUTH, $this->manager->securitySensitiveOperationStatus( 'foo' )
            );
            $this->assertSame(
                AuthManager::SEC_REAUTH, $this->manager->securitySensitiveOperationStatus( 'test' )
            );
            $this->assertSame(
                AuthManager::SEC_OK, $this->manager->securitySensitiveOperationStatus( 'test2' )
            );

            // Missing time
            $session->set( 'AuthManager:lastAuthId', $user->getId() );
            $session->set( 'AuthManager:lastAuthTimestamp', null );
            $this->assertSame(
                AuthManager::SEC_REAUTH, $this->manager->securitySensitiveOperationStatus( 'foo' )
            );
            $this->assertSame(
                AuthManager::SEC_REAUTH, $this->manager->securitySensitiveOperationStatus( 'test' )
            );
            $this->assertSame(
                AuthManager::SEC_OK, $this->manager->securitySensitiveOperationStatus( 'test2' )
            );

            // Recent enough to pass
            $session->set( 'AuthManager:lastAuthTimestamp', time() - 5 );
            $this->assertSame(
                AuthManager::SEC_OK, $this->manager->securitySensitiveOperationStatus( 'foo' )
            );

            // Not recent enough to pass
            $session->set( 'AuthManager:lastAuthTimestamp', time() - 20 );
            $this->assertSame(
                AuthManager::SEC_REAUTH, $this->manager->securitySensitiveOperationStatus( 'foo' )
            );
            // But recent enough for the 'test' operation
            $this->assertSame(
                AuthManager::SEC_OK, $this->manager->securitySensitiveOperationStatus( 'test' )
            );
        } else {
            $this->config->set( 'AllowSecuritySensitiveOperationIfCannotReauthenticate', [
                'test' => false,
                'default' => true,
            ] );

            $this->assertEquals(
                AuthManager::SEC_OK, $this->manager->securitySensitiveOperationStatus( 'foo' )
            );

            $this->assertEquals(
                AuthManager::SEC_FAIL, $this->manager->securitySensitiveOperationStatus( 'test' )
            );
        }

        // Test hook, all three possible values
        foreach ( [
            AuthManager::SEC_OK => AuthManager::SEC_OK,
            AuthManager::SEC_REAUTH => $reauth,
            AuthManager::SEC_FAIL => AuthManager::SEC_FAIL,
        ] as $hook => $expect ) {
            $this->hook( 'SecuritySensitiveOperationStatus', $this->exactly( 2 ) )
                ->with(
                    $this->anything(),
                    $this->anything(),
                    $this->callback( function ( $s ) use ( $session ) {
                        return $s->getId() === $session->getId();
                    } ),
                    $mutableSession ? $this->equalTo( 500, 1 ) : $this->equalTo( -1 )
                )
                ->will( $this->returnCallback( function ( &$v ) use ( $hook ) {
                    $v = $hook;
                    return true;
                } ) );
            $session->set( 'AuthManager:lastAuthTimestamp', time() - 500 );
            $this->assertEquals(
                $expect, $this->manager->securitySensitiveOperationStatus( 'test' ), "hook $hook"
            );
            $this->assertEquals(
                $expect, $this->manager->securitySensitiveOperationStatus( 'test2' ), "hook $hook"
            );
            $this->unhook( 'SecuritySensitiveOperationStatus' );
        }

        ScopedCallback::consume( $reset );
    }

    public function onSecuritySensitiveOperationStatus( &$status, $operation, $session, $time ) {
    }

    public static function provideSecuritySensitiveOperationStatus() {
        return [
            [ true ],
            [ false ],
        ];
    }

    public function testUserCanAuthenticate( $primary1Can, $primary2Can, $expect ) {
        $mock1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary1' ) );
        $mock1->expects( $this->any() )->method( 'testUserCanAuthenticate' )
            ->with( $this->equalTo( 'UTSysop' ) )
            ->will( $this->returnValue( $primary1Can ) );
        $mock2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary2' ) );
        $mock2->expects( $this->any() )->method( 'testUserCanAuthenticate' )
            ->with( $this->equalTo( 'UTSysop' ) )
            ->will( $this->returnValue( $primary2Can ) );
        $this->primaryauthMocks = [ $mock1, $mock2 ];

        $this->initializeManager( true );
        $this->assertSame( $expect, $this->manager->userCanAuthenticate( 'UTSysop' ) );
    }

    public static function provideUserCanAuthenticate() {
        return [
            [ false, false, false ],
            [ true, false, true ],
            [ false, true, true ],
            [ true, true, true ],
        ];
    }

    public function testRevokeAccessForUser() {
        $this->initializeManager();

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary' ) );
        $mock->expects( $this->once() )->method( 'providerRevokeAccessForUser' )
            ->with( $this->equalTo( 'UTSysop' ) );
        $this->primaryauthMocks = [ $mock ];

        $this->initializeManager( true );
        $this->logger->setCollect( true );

        $this->manager->revokeAccessForUser( 'UTSysop' );

        $this->assertSame( [
            [ LogLevel::INFO, 'Revoking access for {user}' ],
        ], $this->logger->getBuffer() );
    }

    public function testProviderCreation() {
        $mocks = [
            'pre' => $this->getMockForAbstractClass( PreAuthenticationProvider::class ),
            'primary' => $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class ),
            'secondary' => $this->getMockForAbstractClass( SecondaryAuthenticationProvider::class ),
        ];
        foreach ( $mocks as $key => $mock ) {
            $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( $key ) );
            $mock->expects( $this->once() )->method( 'setLogger' );
            $mock->expects( $this->once() )->method( 'setManager' );
            $mock->expects( $this->once() )->method( 'setConfig' );
        }
        $this->preauthMocks = [ $mocks['pre'] ];
        $this->primaryauthMocks = [ $mocks['primary'] ];
        $this->secondaryauthMocks = [ $mocks['secondary'] ];

        // Normal operation
        $this->initializeManager();
        $this->assertSame(
            $mocks['primary'],
            $this->managerPriv->getAuthenticationProvider( 'primary' )
        );
        $this->assertSame(
            $mocks['secondary'],
            $this->managerPriv->getAuthenticationProvider( 'secondary' )
        );
        $this->assertSame(
            $mocks['pre'],
            $this->managerPriv->getAuthenticationProvider( 'pre' )
        );
        $this->assertSame(
            [ 'pre' => $mocks['pre'] ],
            $this->managerPriv->getPreAuthenticationProviders()
        );
        $this->assertSame(
            [ 'primary' => $mocks['primary'] ],
            $this->managerPriv->getPrimaryAuthenticationProviders()
        );
        $this->assertSame(
            [ 'secondary' => $mocks['secondary'] ],
            $this->managerPriv->getSecondaryAuthenticationProviders()
        );

        // Duplicate IDs
        $mock1 = $this->getMockForAbstractClass( PreAuthenticationProvider::class );
        $mock2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $this->preauthMocks = [ $mock1 ];
        $this->primaryauthMocks = [ $mock2 ];
        $this->secondaryauthMocks = [];
        $this->initializeManager( true );
        try {
            $this->managerPriv->getAuthenticationProvider( 'Y' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $class1 = get_class( $mock1 );
            $class2 = get_class( $mock2 );
            $this->assertSame(
                "Duplicate specifications for id X (classes $class1 and $class2)", $ex->getMessage()
            );
        }

        // Wrong classes
        $mock = $this->getMockForAbstractClass( AuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $class = get_class( $mock );
        $this->preauthMocks = [ $mock ];
        $this->primaryauthMocks = [ $mock ];
        $this->secondaryauthMocks = [ $mock ];
        $this->initializeManager( true );
        try {
            $this->managerPriv->getPreAuthenticationProviders();
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $this->assertSame(
                "Expected instance of MediaWiki\\Auth\\PreAuthenticationProvider, got $class",
                $ex->getMessage()
            );
        }
        try {
            $this->managerPriv->getPrimaryAuthenticationProviders();
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $this->assertSame(
                "Expected instance of MediaWiki\\Auth\\PrimaryAuthenticationProvider, got $class",
                $ex->getMessage()
            );
        }
        try {
            $this->managerPriv->getSecondaryAuthenticationProviders();
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $this->assertSame(
                "Expected instance of MediaWiki\\Auth\\SecondaryAuthenticationProvider, got $class",
                $ex->getMessage()
            );
        }

        // Sorting
        $mock1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock3 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'A' ) );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'B' ) );
        $mock3->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'C' ) );
        $this->preauthMocks = [];
        $this->primaryauthMocks = [ $mock1, $mock2, $mock3 ];
        $this->secondaryauthMocks = [];
        $this->initializeConfig();
        $config = $this->config->get( 'AuthManagerConfig' );

        $this->initializeManager( false );
        $this->assertSame(
            [ 'A' => $mock1, 'B' => $mock2, 'C' => $mock3 ],
            $this->managerPriv->getPrimaryAuthenticationProviders(),
            'sanity check'
        );

        $config['primaryauth']['A']['sort'] = 100;
        $config['primaryauth']['C']['sort'] = -1;
        $this->config->set( 'AuthManagerConfig', $config );
        $this->initializeManager( false );
        $this->assertSame(
            [ 'C' => $mock3, 'B' => $mock2, 'A' => $mock1 ],
            $this->managerPriv->getPrimaryAuthenticationProviders()
        );
    }

    public function testSetDefaultUserOptions() {
        $this->initializeManager();

        $context = \RequestContext::getMain();
        $reset = new ScopedCallback( [ $context, 'setLanguage' ], [ $context->getLanguage() ] );
        $context->setLanguage( 'de' );
        $this->setMwGlobals( 'wgContLang', \Language::factory( 'zh' ) );

        $user = \User::newFromName( self::usernameForCreation() );
        $user->addToDatabase();
        $oldToken = $user->getToken();
        $this->managerPriv->setDefaultUserOptions( $user, false );
        $user->saveSettings();
        $this->assertNotEquals( $oldToken, $user->getToken() );
        $this->assertSame( 'zh', $user->getOption( 'language' ) );
        $this->assertSame( 'zh', $user->getOption( 'variant' ) );

        $user = \User::newFromName( self::usernameForCreation() );
        $user->addToDatabase();
        $oldToken = $user->getToken();
        $this->managerPriv->setDefaultUserOptions( $user, true );
        $user->saveSettings();
        $this->assertNotEquals( $oldToken, $user->getToken() );
        $this->assertSame( 'de', $user->getOption( 'language' ) );
        $this->assertSame( 'zh', $user->getOption( 'variant' ) );

        $this->setMwGlobals( 'wgContLang', \Language::factory( 'en' ) );

        $user = \User::newFromName( self::usernameForCreation() );
        $user->addToDatabase();
        $oldToken = $user->getToken();
        $this->managerPriv->setDefaultUserOptions( $user, true );
        $user->saveSettings();
        $this->assertNotEquals( $oldToken, $user->getToken() );
        $this->assertSame( 'de', $user->getOption( 'language' ) );
        $this->assertSame( null, $user->getOption( 'variant' ) );
    }

    public function testForcePrimaryAuthenticationProviders() {
        $mockA = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mockB = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mockB2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mockA->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'A' ) );
        $mockB->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'B' ) );
        $mockB2->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'B' ) );
        $this->primaryauthMocks = [ $mockA ];

        $this->logger = new \TestLogger( true );

        // Test without first initializing the configured providers
        $this->initializeManager();
        $this->manager->forcePrimaryAuthenticationProviders( [ $mockB ], 'testing' );
        $this->assertSame(
            [ 'B' => $mockB ], $this->managerPriv->getPrimaryAuthenticationProviders()
        );
        $this->assertSame( null, $this->managerPriv->getAuthenticationProvider( 'A' ) );
        $this->assertSame( $mockB, $this->managerPriv->getAuthenticationProvider( 'B' ) );
        $this->assertSame( [
            [ LogLevel::WARNING, 'Overriding AuthManager primary authn because testing' ],
        ], $this->logger->getBuffer() );
        $this->logger->clearBuffer();

        // Test with first initializing the configured providers
        $this->initializeManager();
        $this->assertSame( $mockA, $this->managerPriv->getAuthenticationProvider( 'A' ) );
        $this->assertSame( null, $this->managerPriv->getAuthenticationProvider( 'B' ) );
        $this->request->getSession()->setSecret( 'AuthManager::authnState', 'test' );
        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState', 'test' );
        $this->manager->forcePrimaryAuthenticationProviders( [ $mockB ], 'testing' );
        $this->assertSame(
            [ 'B' => $mockB ], $this->managerPriv->getPrimaryAuthenticationProviders()
        );
        $this->assertSame( null, $this->managerPriv->getAuthenticationProvider( 'A' ) );
        $this->assertSame( $mockB, $this->managerPriv->getAuthenticationProvider( 'B' ) );
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::authnState' ) );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );
        $this->assertSame( [
            [ LogLevel::WARNING, 'Overriding AuthManager primary authn because testing' ],
            [
                LogLevel::WARNING,
                'PrimaryAuthenticationProviders have already been accessed! I hope nothing breaks.'
            ],
        ], $this->logger->getBuffer() );
        $this->logger->clearBuffer();

        // Test duplicate IDs
        $this->initializeManager();
        try {
            $this->manager->forcePrimaryAuthenticationProviders( [ $mockB, $mockB2 ], 'testing' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $class1 = get_class( $mockB );
            $class2 = get_class( $mockB2 );
            $this->assertSame(
                "Duplicate specifications for id B (classes $class2 and $class1)", $ex->getMessage()
            );
        }

        // Wrong classes
        $mock = $this->getMockForAbstractClass( AuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $class = get_class( $mock );
        try {
            $this->manager->forcePrimaryAuthenticationProviders( [ $mock ], 'testing' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \RuntimeException $ex ) {
            $this->assertSame(
                "Expected instance of MediaWiki\\Auth\\PrimaryAuthenticationProvider, got $class",
                $ex->getMessage()
            );
        }

    }

    public function testBeginAuthentication() {
        $this->initializeManager();

        // Immutable session
        list( $provider, $reset ) = $this->getMockSessionProvider( false );
        $this->hook( 'UserLoggedIn', $this->never() );
        $this->request->getSession()->setSecret( 'AuthManager::authnState', 'test' );
        try {
            $this->manager->beginAuthentication( [], 'http://localhost/' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertSame( 'Authentication is not possible now', $ex->getMessage() );
        }
        $this->unhook( 'UserLoggedIn' );
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::authnState' ) );
        ScopedCallback::consume( $reset );
        $this->initializeManager( true );

        // CreatedAccountAuthenticationRequest
        $user = \User::newFromName( 'UTSysop' );
        $reqs = [
            new CreatedAccountAuthenticationRequest( $user->getId(), $user->getName() )
        ];
        $this->hook( 'UserLoggedIn', $this->never() );
        try {
            $this->manager->beginAuthentication( $reqs, 'http://localhost/' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertSame(
                'CreatedAccountAuthenticationRequests are only valid on the same AuthManager ' .
                    'that created the account',
                $ex->getMessage()
            );
        }
        $this->unhook( 'UserLoggedIn' );

        $this->request->getSession()->clear();
        $this->request->getSession()->setSecret( 'AuthManager::authnState', 'test' );
        $this->managerPriv->createdAccountAuthenticationRequests = [ $reqs[0] ];
        $this->hook( 'UserLoggedIn', $this->once() )
            ->with( $this->callback( function ( $u ) use ( $user ) {
                return $user->getId() === $u->getId() && $user->getName() === $u->getName();
            } ) );
        $this->hook( 'AuthManagerLoginAuthenticateAudit', $this->once() );
        $this->logger->setCollect( true );
        $ret = $this->manager->beginAuthentication( $reqs, 'http://localhost/' );
        $this->logger->setCollect( false );
        $this->unhook( 'UserLoggedIn' );
        $this->unhook( 'AuthManagerLoginAuthenticateAudit' );
        $this->assertSame( AuthenticationResponse::PASS, $ret->status );
        $this->assertSame( $user->getName(), $ret->username );
        $this->assertSame( $user->getId(), $this->request->getSessionData( 'AuthManager:lastAuthId' ) );
        $this->assertEquals(
            time(), $this->request->getSessionData( 'AuthManager:lastAuthTimestamp' ),
            'timestamp ±1', 1
        );
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::authnState' ) );
        $this->assertSame( $user->getId(), $this->request->getSession()->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'Logging in {user} after account creation' ],
        ], $this->logger->getBuffer() );
    }

    public function testCreateFromLogin() {
        $user = \User::newFromName( 'UTSysop' );
        $req1 = $this->getMock( AuthenticationRequest::class );
        $req2 = $this->getMock( AuthenticationRequest::class );
        $req3 = $this->getMock( AuthenticationRequest::class );
        $userReq = new UsernameAuthenticationRequest;
        $userReq->username = 'UTDummy';

        $req1->returnToUrl = 'http://localhost/';
        $req2->returnToUrl = 'http://localhost/';
        $req3->returnToUrl = 'http://localhost/';
        $req3->username = 'UTDummy';
        $userReq->returnToUrl = 'http://localhost/';

        // Passing one into beginAuthentication(), and an immediate FAIL
        $primary = $this->getMockForAbstractClass( AbstractPrimaryAuthenticationProvider::class );
        $this->primaryauthMocks = [ $primary ];
        $this->initializeManager( true );
        $res = AuthenticationResponse::newFail( wfMessage( 'foo' ) );
        $res->createRequest = $req1;
        $primary->expects( $this->any() )->method( 'beginPrimaryAuthentication' )
            ->will( $this->returnValue( $res ) );
        $createReq = new CreateFromLoginAuthenticationRequest(
            null, [ $req2->getUniqueId() => $req2 ]
        );
        $this->logger->setCollect( true );
        $ret = $this->manager->beginAuthentication( [ $createReq ], 'http://localhost/' );
        $this->logger->setCollect( false );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertInstanceOf( CreateFromLoginAuthenticationRequest::class, $ret->createRequest );
        $this->assertSame( $req1, $ret->createRequest->createRequest );
        $this->assertEquals( [ $req2->getUniqueId() => $req2 ], $ret->createRequest->maybeLink );

        // UI, then FAIL in beginAuthentication()
        $primary = $this->getMockBuilder( AbstractPrimaryAuthenticationProvider::class )
            ->setMethods( [ 'continuePrimaryAuthentication' ] )
            ->getMockForAbstractClass();
        $this->primaryauthMocks = [ $primary ];
        $this->initializeManager( true );
        $primary->expects( $this->any() )->method( 'beginPrimaryAuthentication' )
            ->will( $this->returnValue(
                AuthenticationResponse::newUI( [ $req1 ], wfMessage( 'foo' ) )
            ) );
        $res = AuthenticationResponse::newFail( wfMessage( 'foo' ) );
        $res->createRequest = $req2;
        $primary->expects( $this->any() )->method( 'continuePrimaryAuthentication' )
            ->will( $this->returnValue( $res ) );
        $this->logger->setCollect( true );
        $ret = $this->manager->beginAuthentication( [], 'http://localhost/' );
        $this->assertSame( AuthenticationResponse::UI, $ret->status, 'sanity check' );
        $ret = $this->manager->continueAuthentication( [] );
        $this->logger->setCollect( false );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertInstanceOf( CreateFromLoginAuthenticationRequest::class, $ret->createRequest );
        $this->assertSame( $req2, $ret->createRequest->createRequest );
        $this->assertEquals( [], $ret->createRequest->maybeLink );

        // Pass into beginAccountCreation(), see that maybeLink and createRequest get copied
        $primary = $this->getMockForAbstractClass( AbstractPrimaryAuthenticationProvider::class );
        $this->primaryauthMocks = [ $primary ];
        $this->initializeManager( true );
        $createReq = new CreateFromLoginAuthenticationRequest( $req3, [ $req2 ] );
        $createReq->returnToUrl = 'http://localhost/';
        $createReq->username = 'UTDummy';
        $res = AuthenticationResponse::newUI( [ $req1 ], wfMessage( 'foo' ) );
        $primary->expects( $this->any() )->method( 'beginPrimaryAccountCreation' )
            ->with( $this->anything(), $this->anything(), [ $userReq, $createReq, $req3 ] )
            ->will( $this->returnValue( $res ) );
        $primary->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $this->logger->setCollect( true );
        $ret = $this->manager->beginAccountCreation(
            $user, [ $userReq, $createReq ], 'http://localhost/'
        );
        $this->logger->setCollect( false );
        $this->assertSame( AuthenticationResponse::UI, $ret->status );
        $state = $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' );
        $this->assertNotNull( $state );
        $this->assertEquals( [ $userReq, $createReq, $req3 ], $state['reqs'] );
        $this->assertEquals( [ $req2 ], $state['maybeLink'] );
    }

    public function testAuthentication(
        StatusValue $preResponse, array $primaryResponses, array $secondaryResponses,
        array $managerResponses, $link = false
    ) {
        $this->initializeManager();
        $user = \User::newFromName( 'UTSysop' );
        $id = $user->getId();
        $name = $user->getName();

        // Set up lots of mocks...
        $req = new RememberMeAuthenticationRequest;
        $req->rememberMe = (bool)rand( 0, 1 );
        $req->pre = $preResponse;
        $req->primary = $primaryResponses;
        $req->secondary = $secondaryResponses;
        $mocks = [];
        foreach ( [ 'pre', 'primary', 'secondary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $mocks[$key . '2'] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key . '2']->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key . '2' ) );
            $mocks[$key . '3'] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key . '3']->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key . '3' ) );
        }
        foreach ( $mocks as $mock ) {
            $mock->expects( $this->any() )->method( 'getAuthenticationRequests' )
                ->will( $this->returnValue( [] ) );
        }

        $mocks['pre']->expects( $this->once() )->method( 'testForAuthentication' )
            ->will( $this->returnCallback( function ( $reqs ) use ( $req ) {
                $this->assertContains( $req, $reqs );
                return $req->pre;
            } ) );

        $ct = count( $req->primary );
        $callback = $this->returnCallback( function ( $reqs ) use ( $req ) {
            $this->assertContains( $req, $reqs );
            return array_shift( $req->primary );
        } );
        $mocks['primary']->expects( $this->exactly( min( 1, $ct ) ) )
            ->method( 'beginPrimaryAuthentication' )
            ->will( $callback );
        $mocks['primary']->expects( $this->exactly( max( 0, $ct - 1 ) ) )
            ->method( 'continuePrimaryAuthentication' )
            ->will( $callback );
        if ( $link ) {
            $mocks['primary']->expects( $this->any() )->method( 'accountCreationType' )
                ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        }

        $ct = count( $req->secondary );
        $callback = $this->returnCallback( function ( $user, $reqs ) use ( $id, $name, $req ) {
            $this->assertSame( $id, $user->getId() );
            $this->assertSame( $name, $user->getName() );
            $this->assertContains( $req, $reqs );
            return array_shift( $req->secondary );
        } );
        $mocks['secondary']->expects( $this->exactly( min( 1, $ct ) ) )
            ->method( 'beginSecondaryAuthentication' )
            ->will( $callback );
        $mocks['secondary']->expects( $this->exactly( max( 0, $ct - 1 ) ) )
            ->method( 'continueSecondaryAuthentication' )
            ->will( $callback );

        $abstain = AuthenticationResponse::newAbstain();
        $mocks['pre2']->expects( $this->atMost( 1 ) )->method( 'testForAuthentication' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $mocks['primary2']->expects( $this->atMost( 1 ) )->method( 'beginPrimaryAuthentication' )
                ->will( $this->returnValue( $abstain ) );
        $mocks['primary2']->expects( $this->never() )->method( 'continuePrimaryAuthentication' );
        $mocks['secondary2']->expects( $this->atMost( 1 ) )->method( 'beginSecondaryAuthentication' )
                ->will( $this->returnValue( $abstain ) );
        $mocks['secondary2']->expects( $this->never() )->method( 'continueSecondaryAuthentication' );
        $mocks['secondary3']->expects( $this->atMost( 1 ) )->method( 'beginSecondaryAuthentication' )
                ->will( $this->returnValue( $abstain ) );
        $mocks['secondary3']->expects( $this->never() )->method( 'continueSecondaryAuthentication' );

        $this->preauthMocks = [ $mocks['pre'], $mocks['pre2'] ];
        $this->primaryauthMocks = [ $mocks['primary'], $mocks['primary2'] ];
        $this->secondaryauthMocks = [
            $mocks['secondary3'], $mocks['secondary'], $mocks['secondary2'],
            // So linking happens
            new ConfirmLinkSecondaryAuthenticationProvider,
        ];
        $this->initializeManager( true );
        $this->logger->setCollect( true );

        $constraint = \PHPUnit_Framework_Assert::logicalOr(
            $this->equalTo( AuthenticationResponse::PASS ),
            $this->equalTo( AuthenticationResponse::FAIL )
        );
        $providers = array_filter(
            array_merge(
                $this->preauthMocks, $this->primaryauthMocks, $this->secondaryauthMocks
            ),
            function ( $p ) {
                return is_callable( [ $p, 'expects' ] );
            }
        );
        foreach ( $providers as $p ) {
            $p->postCalled = false;
            $p->expects( $this->atMost( 1 ) )->method( 'postAuthentication' )
                ->willReturnCallback( function ( $user, $response ) use ( $constraint, $p ) {
                    if ( $user !== null ) {
                        $this->assertInstanceOf( 'User', $user );
                        $this->assertSame( 'UTSysop', $user->getName() );
                    }
                    $this->assertInstanceOf( AuthenticationResponse::class, $response );
                    $this->assertThat( $response->status, $constraint );
                    $p->postCalled = $response->status;
                } );
        }

        $session = $this->request->getSession();
        $session->setRememberUser( !$req->rememberMe );

        foreach ( $managerResponses as $i => $response ) {
            $success = $response instanceof AuthenticationResponse &&
                $response->status === AuthenticationResponse::PASS;
            if ( $success ) {
                $this->hook( 'UserLoggedIn', $this->once() )
                    ->with( $this->callback( function ( $user ) use ( $id, $name ) {
                        return $user->getId() === $id && $user->getName() === $name;
                    } ) );
            } else {
                $this->hook( 'UserLoggedIn', $this->never() );
            }
            if ( $success || (
                    $response instanceof AuthenticationResponse &&
                    $response->status === AuthenticationResponse::FAIL &&
                    $response->message->getKey() !== 'authmanager-authn-not-in-progress' &&
                    $response->message->getKey() !== 'authmanager-authn-no-primary'
                )
            ) {
                $this->hook( 'AuthManagerLoginAuthenticateAudit', $this->once() );
            } else {
                $this->hook( 'AuthManagerLoginAuthenticateAudit', $this->never() );
            }

            $ex = null;
            try {
                if ( !$i ) {
                    $ret = $this->manager->beginAuthentication( [ $req ], 'http://localhost/' );
                } else {
                    $ret = $this->manager->continueAuthentication( [ $req ] );
                }
                if ( $response instanceof \Exception ) {
                    $this->fail( 'Expected exception not thrown', "Response $i" );
                }
            } catch ( \Exception $ex ) {
                if ( !$response instanceof \Exception ) {
                    throw $ex;
                }
                $this->assertEquals( $response->getMessage(), $ex->getMessage(), "Response $i, exception" );
                $this->assertNull( $session->getSecret( 'AuthManager::authnState' ),
                    "Response $i, exception, session state" );
                $this->unhook( 'UserLoggedIn' );
                $this->unhook( 'AuthManagerLoginAuthenticateAudit' );
                return;
            }

            $this->unhook( 'UserLoggedIn' );
            $this->unhook( 'AuthManagerLoginAuthenticateAudit' );

            $this->assertSame( 'http://localhost/', $req->returnToUrl );

            $ret->message = $this->message( $ret->message );
            $this->assertEquals( $response, $ret, "Response $i, response" );
            if ( $success ) {
                $this->assertSame( $id, $session->getUser()->getId(),
                    "Response $i, authn" );
            } else {
                $this->assertSame( 0, $session->getUser()->getId(),
                    "Response $i, authn" );
            }
            if ( $success || $response->status === AuthenticationResponse::FAIL ) {
                $this->assertNull( $session->getSecret( 'AuthManager::authnState' ),
                    "Response $i, session state" );
                foreach ( $providers as $p ) {
                    $this->assertSame( $response->status, $p->postCalled,
                        "Response $i, post-auth callback called" );
                }
            } else {
                $this->assertNotNull( $session->getSecret( 'AuthManager::authnState' ),
                    "Response $i, session state" );
                foreach ( $ret->neededRequests as $neededReq ) {
                    $this->assertEquals( AuthManager::ACTION_LOGIN, $neededReq->action,
                        "Response $i, neededRequest action" );
                }
                $this->assertEquals(
                    $ret->neededRequests,
                    $this->manager->getAuthenticationRequests( AuthManager::ACTION_LOGIN_CONTINUE ),
                    "Response $i, continuation check"
                );
                foreach ( $providers as $p ) {
                    $this->assertFalse( $p->postCalled, "Response $i, post-auth callback not called" );
                }
            }

            $state = $session->getSecret( 'AuthManager::authnState' );
            $maybeLink = isset( $state['maybeLink'] ) ? $state['maybeLink'] : [];
            if ( $link && $response->status === AuthenticationResponse::RESTART ) {
                $this->assertEquals(
                    $response->createRequest->maybeLink,
                    $maybeLink,
                    "Response $i, maybeLink"
                );
            } else {
                $this->assertEquals( [], $maybeLink, "Response $i, maybeLink" );
            }
        }

        if ( $success ) {
            $this->assertSame( $req->rememberMe, $session->shouldRememberUser(),
                'rememberMe checkbox had effect' );
        } else {
            $this->assertNotSame( $req->rememberMe, $session->shouldRememberUser(),
                'rememberMe checkbox wasn\'t applied' );
        }
    }

    public function provideAuthentication() {
        $user = \User::newFromName( 'UTSysop' );
        $id = $user->getId();
        $name = $user->getName();

        $rememberReq = new RememberMeAuthenticationRequest;
        $rememberReq->action = AuthManager::ACTION_LOGIN;

        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $req->foobar = 'baz';
        $restartResponse = AuthenticationResponse::newRestart(
            $this->message( 'authmanager-authn-no-local-user' )
        );
        $restartResponse->neededRequests = [ $rememberReq ];

        $restartResponse2Pass = AuthenticationResponse::newPass( null );
        $restartResponse2Pass->linkRequest = $req;
        $restartResponse2 = AuthenticationResponse::newRestart(
            $this->message( 'authmanager-authn-no-local-user-link' )
        );
        $restartResponse2->createRequest = new CreateFromLoginAuthenticationRequest(
            null, [ $req->getUniqueId() => $req ]
        );
        $restartResponse2->createRequest->action = AuthManager::ACTION_LOGIN;
        $restartResponse2->neededRequests = [ $rememberReq, $restartResponse2->createRequest ];

        return [
            'Failure in pre-auth' => [
                StatusValue::newFatal( 'fail-from-pre' ),
                [],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-pre' ) ),
                    AuthenticationResponse::newFail(
                        $this->message( 'authmanager-authn-not-in-progress' )
                    ),
                ]
            ],
            'Failure in primary' => [
                StatusValue::newGood(),
                $tmp = [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-primary' ) ),
                ],
                [],
                $tmp
            ],
            'All primary abstain' => [
                StatusValue::newGood(),
                [
                    AuthenticationResponse::newAbstain(),
                ],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'authmanager-authn-no-primary' ) )
                ]
            ],
            'Primary UI, then redirect, then fail' => [
                StatusValue::newGood(),
                $tmp = [
                    AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newRedirect( [ $req ], '/foo.html', [ 'foo' => 'bar' ] ),
                    AuthenticationResponse::newFail( $this->message( 'fail-in-primary-continue' ) ),
                ],
                [],
                $tmp
            ],
            'Primary redirect, then abstain' => [
                StatusValue::newGood(),
                [
                    $tmp = AuthenticationResponse::newRedirect(
                        [ $req ], '/foo.html', [ 'foo' => 'bar' ]
                    ),
                    AuthenticationResponse::newAbstain(),
                ],
                [],
                [
                    $tmp,
                    new \DomainException(
                        'MockPrimaryAuthenticationProvider::continuePrimaryAuthentication() returned ABSTAIN'
                    )
                ]
            ],
            'Primary UI, then pass with no local user' => [
                StatusValue::newGood(),
                [
                    $tmp = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newPass( null ),
                ],
                [],
                [
                    $tmp,
                    $restartResponse,
                ]
            ],
            'Primary UI, then pass with no local user (link type)' => [
                StatusValue::newGood(),
                [
                    $tmp = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    $restartResponse2Pass,
                ],
                [],
                [
                    $tmp,
                    $restartResponse2,
                ],
                true
            ],
            'Primary pass with invalid username' => [
                StatusValue::newGood(),
                [
                    AuthenticationResponse::newPass( '<>' ),
                ],
                [],
                [
                    new \DomainException( 'MockPrimaryAuthenticationProvider returned an invalid username: <>' ),
                ]
            ],
            'Secondary fail' => [
                StatusValue::newGood(),
                [
                    AuthenticationResponse::newPass( $name ),
                ],
                $tmp = [
                    AuthenticationResponse::newFail( $this->message( 'fail-in-secondary' ) ),
                ],
                $tmp
            ],
            'Secondary UI, then abstain' => [
                StatusValue::newGood(),
                [
                    AuthenticationResponse::newPass( $name ),
                ],
                [
                    $tmp = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newAbstain()
                ],
                [
                    $tmp,
                    AuthenticationResponse::newPass( $name ),
                ]
            ],
            'Secondary pass' => [
                StatusValue::newGood(),
                [
                    AuthenticationResponse::newPass( $name ),
                ],
                [
                    AuthenticationResponse::newPass()
                ],
                [
                    AuthenticationResponse::newPass( $name ),
                ]
            ],
        ];
    }

    public function testUserExists( $primary1Exists, $primary2Exists, $expect ) {
        $mock1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary1' ) );
        $mock1->expects( $this->any() )->method( 'testUserExists' )
            ->with( $this->equalTo( 'UTSysop' ) )
            ->will( $this->returnValue( $primary1Exists ) );
        $mock2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary2' ) );
        $mock2->expects( $this->any() )->method( 'testUserExists' )
            ->with( $this->equalTo( 'UTSysop' ) )
            ->will( $this->returnValue( $primary2Exists ) );
        $this->primaryauthMocks = [ $mock1, $mock2 ];

        $this->initializeManager( true );
        $this->assertSame( $expect, $this->manager->userExists( 'UTSysop' ) );
    }

    public static function provideUserExists() {
        return [
            [ false, false, false ],
            [ true, false, true ],
            [ false, true, true ],
            [ true, true, true ],
        ];
    }

    public function testAllowsAuthenticationDataChange( $primaryReturn, $secondaryReturn, $expect ) {
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );

        $mock1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( '1' ) );
        $mock1->expects( $this->any() )->method( 'providerAllowsAuthenticationDataChange' )
            ->with( $this->equalTo( $req ) )
            ->will( $this->returnValue( $primaryReturn ) );
        $mock2 = $this->getMockForAbstractClass( SecondaryAuthenticationProvider::class );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( '2' ) );
        $mock2->expects( $this->any() )->method( 'providerAllowsAuthenticationDataChange' )
            ->with( $this->equalTo( $req ) )
            ->will( $this->returnValue( $secondaryReturn ) );

        $this->primaryauthMocks = [ $mock1 ];
        $this->secondaryauthMocks = [ $mock2 ];
        $this->initializeManager( true );
        $this->assertEquals( $expect, $this->manager->allowsAuthenticationDataChange( $req ) );
    }

    public static function provideAllowsAuthenticationDataChange() {
        $ignored = \Status::newGood( 'ignored' );
        $ignored->warning( 'authmanager-change-not-supported' );

        $okFromPrimary = StatusValue::newGood();
        $okFromPrimary->warning( 'warning-from-primary' );
        $okFromSecondary = StatusValue::newGood();
        $okFromSecondary->warning( 'warning-from-secondary' );

        return [
            [
                StatusValue::newGood(),
                StatusValue::newGood(),
                \Status::newGood(),
            ],
            [
                StatusValue::newGood(),
                StatusValue::newGood( 'ignore' ),
                \Status::newGood(),
            ],
            [
                StatusValue::newGood( 'ignored' ),
                StatusValue::newGood(),
                \Status::newGood(),
            ],
            [
                StatusValue::newGood( 'ignored' ),
                StatusValue::newGood( 'ignored' ),
                $ignored,
            ],
            [
                StatusValue::newFatal( 'fail from primary' ),
                StatusValue::newGood(),
                \Status::newFatal( 'fail from primary' ),
            ],
            [
                $okFromPrimary,
                StatusValue::newGood(),
                \Status::wrap( $okFromPrimary ),
            ],
            [
                StatusValue::newGood(),
                StatusValue::newFatal( 'fail from secondary' ),
                \Status::newFatal( 'fail from secondary' ),
            ],
            [
                StatusValue::newGood(),
                $okFromSecondary,
                \Status::wrap( $okFromSecondary ),
            ],
        ];
    }

    public function testChangeAuthenticationData() {
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $req->username = 'UTSysop';

        $mock1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock1->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( '1' ) );
        $mock1->expects( $this->once() )->method( 'providerChangeAuthenticationData' )
            ->with( $this->equalTo( $req ) );
        $mock2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( '2' ) );
        $mock2->expects( $this->once() )->method( 'providerChangeAuthenticationData' )
            ->with( $this->equalTo( $req ) );

        $this->primaryauthMocks = [ $mock1, $mock2 ];
        $this->initializeManager( true );
        $this->logger->setCollect( true );
        $this->manager->changeAuthenticationData( $req );
        $this->assertSame( [
            [ LogLevel::INFO, 'Changing authentication data for {user} class {what}' ],
        ], $this->logger->getBuffer() );
    }

    public function testCanCreateAccounts() {
        $types = [
            PrimaryAuthenticationProvider::TYPE_CREATE => true,
            PrimaryAuthenticationProvider::TYPE_LINK => true,
            PrimaryAuthenticationProvider::TYPE_NONE => false,
        ];

        foreach ( $types as $type => $can ) {
            $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
            $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( $type ) );
            $mock->expects( $this->any() )->method( 'accountCreationType' )
                ->will( $this->returnValue( $type ) );
            $this->primaryauthMocks = [ $mock ];
            $this->initializeManager( true );
            $this->assertSame( $can, $this->manager->canCreateAccounts(), $type );
        }
    }

    public function testCheckAccountCreatePermissions() {
        global $wgGroupPermissions;

        $this->stashMwGlobals( [ 'wgGroupPermissions' ] );

        $this->initializeManager( true );

        $wgGroupPermissions['*']['createaccount'] = true;
        $this->assertEquals(
            \Status::newGood(),
            $this->manager->checkAccountCreatePermissions( new \User )
        );

        $this->setMwGlobals( [ 'wgReadOnly' => 'Because' ] );
        $this->assertEquals(
            \Status::newFatal( 'readonlytext', 'Because' ),
            $this->manager->checkAccountCreatePermissions( new \User )
        );
        $this->setMwGlobals( [ 'wgReadOnly' => false ] );

        $wgGroupPermissions['*']['createaccount'] = false;
        $status = $this->manager->checkAccountCreatePermissions( new \User );
        $this->assertFalse( $status->isOK() );
        $this->assertTrue( $status->hasMessage( 'badaccess-groups' ) );
        $wgGroupPermissions['*']['createaccount'] = true;

        $user = \User::newFromName( 'UTBlockee' );
        if ( $user->getID() == 0 ) {
            $user->addToDatabase();
            \TestUser::setPasswordForUser( $user, 'UTBlockeePassword' );
            $user->saveSettings();
        }
        $oldBlock = \Block::newFromTarget( 'UTBlockee' );
        if ( $oldBlock ) {
            // An old block will prevent our new one from saving.
            $oldBlock->delete();
        }
        $blockOptions = [
            'address' => 'UTBlockee',
            'user' => $user->getID(),
            'reason' => __METHOD__,
            'expiry' => time() + 100500,
            'createAccount' => true,
        ];
        $block = new \Block( $blockOptions );
        $block->insert();
        $status = $this->manager->checkAccountCreatePermissions( $user );
        $this->assertFalse( $status->isOK() );
        $this->assertTrue( $status->hasMessage( 'cantcreateaccount-text' ) );

        $blockOptions = [
            'address' => '127.0.0.0/24',
            'reason' => __METHOD__,
            'expiry' => time() + 100500,
            'createAccount' => true,
        ];
        $block = new \Block( $blockOptions );
        $block->insert();
        $scopeVariable = new ScopedCallback( [ $block, 'delete' ] );
        $status = $this->manager->checkAccountCreatePermissions( new \User );
        $this->assertFalse( $status->isOK() );
        $this->assertTrue( $status->hasMessage( 'cantcreateaccount-range-text' ) );
        ScopedCallback::consume( $scopeVariable );

        $this->setMwGlobals( [
            'wgEnableDnsBlacklist' => true,
            'wgDnsBlacklistUrls' => [
                'local.wmftest.net', // This will resolve for every subdomain, which works to test "listed?"
            ],
            'wgProxyWhitelist' => [],
        ] );
        $status = $this->manager->checkAccountCreatePermissions( new \User );
        $this->assertFalse( $status->isOK() );
        $this->assertTrue( $status->hasMessage( 'sorbs_create_account_reason' ) );
        $this->setMwGlobals( 'wgProxyWhitelist', [ '127.0.0.1' ] );
        $status = $this->manager->checkAccountCreatePermissions( new \User );
        $this->assertTrue( $status->isGood() );
    }

    private static function usernameForCreation( $uniq = '' ) {
        $i = 0;
        do {
            $username = "UTAuthManagerTestAccountCreation" . $uniq . ++$i;
        } while ( \User::newFromName( $username )->getId() !== 0 );
        return $username;
    }

    public function testCanCreateAccount() {
        $username = self::usernameForCreation();
        $this->initializeManager();

        $this->assertEquals(
            \Status::newFatal( 'authmanager-create-disabled' ),
            $this->manager->canCreateAccount( $username )
        );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( true ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->assertEquals(
            \Status::newFatal( 'userexists' ),
            $this->manager->canCreateAccount( $username )
        );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->assertEquals(
            \Status::newFatal( 'noname' ),
            $this->manager->canCreateAccount( $username . '<>' )
        );

        $this->assertEquals(
            \Status::newFatal( 'userexists' ),
            $this->manager->canCreateAccount( 'UTSysop' )
        );

        $this->assertEquals(
            \Status::newGood(),
            $this->manager->canCreateAccount( $username )
        );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newFatal( 'fail' ) ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->assertEquals(
            \Status::newFatal( 'fail' ),
            $this->manager->canCreateAccount( $username )
        );
    }

    public function testBeginAccountCreation() {
        $creator = \User::newFromName( 'UTSysop' );
        $userReq = new UsernameAuthenticationRequest;
        $this->logger = new \TestLogger( false, function ( $message, $level ) {
            return $level === LogLevel::DEBUG ? null : $message;
        } );
        $this->initializeManager();

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState', 'test' );
        $this->hook( 'LocalUserCreated', $this->never() );
        try {
            $this->manager->beginAccountCreation(
                $creator, [], 'http://localhost/'
            );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertEquals( 'Account creation is not possible', $ex->getMessage() );
        }
        $this->unhook( 'LocalUserCreated' );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( true ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->beginAccountCreation( $creator, [], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );

        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = self::usernameForCreation();
        $userReq2 = new UsernameAuthenticationRequest;
        $userReq2->username = $userReq->username . 'X';
        $ret = $this->manager->beginAccountCreation(
            $creator, [ $userReq, $userReq2 ], 'http://localhost/'
        );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );

        $this->setMwGlobals( [ 'wgReadOnly' => 'Because' ] );
        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = self::usernameForCreation();
        $ret = $this->manager->beginAccountCreation( $creator, [ $userReq ], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'readonlytext', $ret->message->getKey() );
        $this->assertSame( [ 'Because' ], $ret->message->getParams() );
        $this->setMwGlobals( [ 'wgReadOnly' => false ] );

        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = self::usernameForCreation();
        $ret = $this->manager->beginAccountCreation( $creator, [ $userReq ], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'userexists', $ret->message->getKey() );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newFatal( 'fail' ) ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = self::usernameForCreation();
        $ret = $this->manager->beginAccountCreation( $creator, [ $userReq ], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'fail', $ret->message->getKey() );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = self::usernameForCreation() . '<>';
        $ret = $this->manager->beginAccountCreation( $creator, [ $userReq ], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );

        $this->hook( 'LocalUserCreated', $this->never() );
        $userReq->username = $creator->getName();
        $ret = $this->manager->beginAccountCreation( $creator, [ $userReq ], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'userexists', $ret->message->getKey() );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $mock->expects( $this->any() )->method( 'testForAccountCreation' )
            ->will( $this->returnValue( StatusValue::newFatal( 'fail' ) ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $req = $this->getMockBuilder( UserDataAuthenticationRequest::class )
            ->setMethods( [ 'populateUser' ] )
            ->getMock();
        $req->expects( $this->any() )->method( 'populateUser' )
            ->willReturn( \StatusValue::newFatal( 'populatefail' ) );
        $userReq->username = self::usernameForCreation();
        $ret = $this->manager->beginAccountCreation(
            $creator, [ $userReq, $req ], 'http://localhost/'
        );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'populatefail', $ret->message->getKey() );

        $req = new UserDataAuthenticationRequest;
        $userReq->username = self::usernameForCreation();

        $ret = $this->manager->beginAccountCreation(
            $creator, [ $userReq, $req ], 'http://localhost/'
        );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'fail', $ret->message->getKey() );

        $this->manager->beginAccountCreation(
            \User::newFromName( $userReq->username ), [ $userReq, $req ], 'http://localhost/'
        );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'fail', $ret->message->getKey() );
    }

    public function testContinueAccountCreation() {
        $creator = \User::newFromName( 'UTSysop' );
        $username = self::usernameForCreation();
        $this->logger = new \TestLogger( false, function ( $message, $level ) {
            return $level === LogLevel::DEBUG ? null : $message;
        } );
        $this->initializeManager();

        $session = [
            'userid' => 0,
            'username' => $username,
            'creatorid' => 0,
            'creatorname' => $username,
            'reqs' => [],
            'primary' => null,
            'primaryResponse' => null,
            'secondary' => [],
            'ranPreTests' => true,
        ];

        $this->hook( 'LocalUserCreated', $this->never() );
        try {
            $this->manager->continueAccountCreation( [] );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertEquals( 'Account creation is not possible', $ex->getMessage() );
        }
        $this->unhook( 'LocalUserCreated' );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'beginPrimaryAccountCreation' )->will(
            $this->returnValue( AuthenticationResponse::newFail( $this->message( 'fail' ) ) )
        );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState', null );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->continueAccountCreation( [] );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'authmanager-create-not-in-progress', $ret->message->getKey() );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'username' => "$username<>" ] + $session );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->continueAccountCreation( [] );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState', $session );
        $this->hook( 'LocalUserCreated', $this->never() );
        $cache = \ObjectCache::getLocalClusterInstance();
        $lock = $cache->getScopedLock( $cache->makeGlobalKey( 'account', md5( $username ) ) );
        $ret = $this->manager->continueAccountCreation( [] );
        unset( $lock );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'usernameinprogress', $ret->message->getKey() );
        // This error shouldn't remove the existing session, because the
        // raced-with process "owns" it.
        $this->assertSame(
            $session, $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'username' => $creator->getName() ] + $session );
        $this->setMwGlobals( [ 'wgReadOnly' => 'Because' ] );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->continueAccountCreation( [] );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'readonlytext', $ret->message->getKey() );
        $this->assertSame( [ 'Because' ], $ret->message->getParams() );
        $this->setMwGlobals( [ 'wgReadOnly' => false ] );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'username' => $creator->getName() ] + $session );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->continueAccountCreation( [] );
        $this->unhook( 'LocalUserCreated' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'userexists', $ret->message->getKey() );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'userid' => $creator->getId() ] + $session );
        $this->hook( 'LocalUserCreated', $this->never() );
        try {
            $ret = $this->manager->continueAccountCreation( [] );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \UnexpectedValueException $ex ) {
            $this->assertEquals( "User \"{$username}\" should exist now, but doesn't!", $ex->getMessage() );
        }
        $this->unhook( 'LocalUserCreated' );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $id = $creator->getId();
        $name = $creator->getName();
        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'username' => $name, 'userid' => $id + 1 ] + $session );
        $this->hook( 'LocalUserCreated', $this->never() );
        try {
            $ret = $this->manager->continueAccountCreation( [] );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \UnexpectedValueException $ex ) {
            $this->assertEquals(
                "User \"{$name}\" exists, but ID $id != " . ( $id + 1 ) . '!', $ex->getMessage()
            );
        }
        $this->unhook( 'LocalUserCreated' );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );

        $req = $this->getMockBuilder( UserDataAuthenticationRequest::class )
            ->setMethods( [ 'populateUser' ] )
            ->getMock();
        $req->expects( $this->any() )->method( 'populateUser' )
            ->willReturn( \StatusValue::newFatal( 'populatefail' ) );
        $this->request->getSession()->setSecret( 'AuthManager::accountCreationState',
            [ 'reqs' => [ $req ] ] + $session );
        $ret = $this->manager->continueAccountCreation( [] );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'populatefail', $ret->message->getKey() );
        $this->assertNull(
            $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' )
        );
    }

    public function testAccountCreation(
        StatusValue $preTest, $primaryTest, $secondaryTest,
        array $primaryResponses, array $secondaryResponses, array $managerResponses
    ) {
        $creator = \User::newFromName( 'UTSysop' );
        $username = self::usernameForCreation();

        $this->initializeManager();

        // Set up lots of mocks...
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $req->preTest = $preTest;
        $req->primaryTest = $primaryTest;
        $req->secondaryTest = $secondaryTest;
        $req->primary = $primaryResponses;
        $req->secondary = $secondaryResponses;
        $mocks = [];
        foreach ( [ 'pre', 'primary', 'secondary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $mocks[$key]->expects( $this->any() )->method( 'testUserForCreation' )
                ->will( $this->returnValue( StatusValue::newGood() ) );
            $mocks[$key]->expects( $this->any() )->method( 'testForAccountCreation' )
                ->will( $this->returnCallback(
                    function ( $user, $creatorIn, $reqs )
                        use ( $username, $creator, $req, $key )
                    {
                        $this->assertSame( $username, $user->getName() );
                        $this->assertSame( $creator->getId(), $creatorIn->getId() );
                        $this->assertSame( $creator->getName(), $creatorIn->getName() );
                        $foundReq = false;
                        foreach ( $reqs as $r ) {
                            $this->assertSame( $username, $r->username );
                            $foundReq = $foundReq || get_class( $r ) === get_class( $req );
                        }
                        $this->assertTrue( $foundReq, '$reqs contains $req' );
                        $k = $key . 'Test';
                        return $req->$k;
                    }
                ) );

            for ( $i = 2; $i <= 3; $i++ ) {
                $mocks[$key . $i] = $this->getMockForAbstractClass(
                    "MediaWiki\\Auth\\$class", [], "Mock$class"
                );
                $mocks[$key . $i]->expects( $this->any() )->method( 'getUniqueId' )
                    ->will( $this->returnValue( $key . $i ) );
                $mocks[$key . $i]->expects( $this->any() )->method( 'testUserForCreation' )
                    ->will( $this->returnValue( StatusValue::newGood() ) );
                $mocks[$key . $i]->expects( $this->atMost( 1 ) )->method( 'testForAccountCreation' )
                    ->will( $this->returnValue( StatusValue::newGood() ) );
            }
        }

        $mocks['primary']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mocks['primary']->expects( $this->any() )->method( 'testUserExists' )
            ->will( $this->returnValue( false ) );
        $ct = count( $req->primary );
        $callback = $this->returnCallback( function ( $user, $creator, $reqs ) use ( $username, $req ) {
            $this->assertSame( $username, $user->getName() );
            $this->assertSame( 'UTSysop', $creator->getName() );
            $foundReq = false;
            foreach ( $reqs as $r ) {
                $this->assertSame( $username, $r->username );
                $foundReq = $foundReq || get_class( $r ) === get_class( $req );
            }
            $this->assertTrue( $foundReq, '$reqs contains $req' );
            return array_shift( $req->primary );
        } );
        $mocks['primary']->expects( $this->exactly( min( 1, $ct ) ) )
            ->method( 'beginPrimaryAccountCreation' )
            ->will( $callback );
        $mocks['primary']->expects( $this->exactly( max( 0, $ct - 1 ) ) )
            ->method( 'continuePrimaryAccountCreation' )
            ->will( $callback );

        $ct = count( $req->secondary );
        $callback = $this->returnCallback( function ( $user, $creator, $reqs ) use ( $username, $req ) {
            $this->assertSame( $username, $user->getName() );
            $this->assertSame( 'UTSysop', $creator->getName() );
            $foundReq = false;
            foreach ( $reqs as $r ) {
                $this->assertSame( $username, $r->username );
                $foundReq = $foundReq || get_class( $r ) === get_class( $req );
            }
            $this->assertTrue( $foundReq, '$reqs contains $req' );
            return array_shift( $req->secondary );
        } );
        $mocks['secondary']->expects( $this->exactly( min( 1, $ct ) ) )
            ->method( 'beginSecondaryAccountCreation' )
            ->will( $callback );
        $mocks['secondary']->expects( $this->exactly( max( 0, $ct - 1 ) ) )
            ->method( 'continueSecondaryAccountCreation' )
            ->will( $callback );

        $abstain = AuthenticationResponse::newAbstain();
        $mocks['primary2']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $mocks['primary2']->expects( $this->any() )->method( 'testUserExists' )
            ->will( $this->returnValue( false ) );
        $mocks['primary2']->expects( $this->atMost( 1 ) )->method( 'beginPrimaryAccountCreation' )
            ->will( $this->returnValue( $abstain ) );
        $mocks['primary2']->expects( $this->never() )->method( 'continuePrimaryAccountCreation' );
        $mocks['primary3']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_NONE ) );
        $mocks['primary3']->expects( $this->any() )->method( 'testUserExists' )
            ->will( $this->returnValue( false ) );
        $mocks['primary3']->expects( $this->never() )->method( 'beginPrimaryAccountCreation' );
        $mocks['primary3']->expects( $this->never() )->method( 'continuePrimaryAccountCreation' );
        $mocks['secondary2']->expects( $this->atMost( 1 ) )
            ->method( 'beginSecondaryAccountCreation' )
            ->will( $this->returnValue( $abstain ) );
        $mocks['secondary2']->expects( $this->never() )->method( 'continueSecondaryAccountCreation' );
        $mocks['secondary3']->expects( $this->atMost( 1 ) )
            ->method( 'beginSecondaryAccountCreation' )
            ->will( $this->returnValue( $abstain ) );
        $mocks['secondary3']->expects( $this->never() )->method( 'continueSecondaryAccountCreation' );

        $this->preauthMocks = [ $mocks['pre'], $mocks['pre2'] ];
        $this->primaryauthMocks = [ $mocks['primary3'], $mocks['primary'], $mocks['primary2'] ];
        $this->secondaryauthMocks = [
            $mocks['secondary3'], $mocks['secondary'], $mocks['secondary2']
        ];

        $this->logger = new \TestLogger( true, function ( $message, $level ) {
            return $level === LogLevel::DEBUG ? null : $message;
        } );
        $expectLog = [];
        $this->initializeManager( true );

        $constraint = \PHPUnit_Framework_Assert::logicalOr(
            $this->equalTo( AuthenticationResponse::PASS ),
            $this->equalTo( AuthenticationResponse::FAIL )
        );
        $providers = array_merge(
            $this->preauthMocks, $this->primaryauthMocks, $this->secondaryauthMocks
        );
        foreach ( $providers as $p ) {
            $p->postCalled = false;
            $p->expects( $this->atMost( 1 ) )->method( 'postAccountCreation' )
                ->willReturnCallback( function ( $user, $creator, $response )
                    use ( $constraint, $p, $username )
                {
                    $this->assertInstanceOf( 'User', $user );
                    $this->assertSame( $username, $user->getName() );
                    $this->assertSame( 'UTSysop', $creator->getName() );
                    $this->assertInstanceOf( AuthenticationResponse::class, $response );
                    $this->assertThat( $response->status, $constraint );
                    $p->postCalled = $response->status;
                } );
        }

        // We're testing with $wgNewUserLog = false, so assert that it worked
        $dbw = wfGetDB( DB_MASTER );
        $maxLogId = $dbw->selectField( 'logging', 'MAX(log_id)', [ 'log_type' => 'newusers' ] );

        $first = true;
        $created = false;
        foreach ( $managerResponses as $i => $response ) {
            $success = $response instanceof AuthenticationResponse &&
                $response->status === AuthenticationResponse::PASS;
            if ( $i === 'created' ) {
                $created = true;
                $this->hook( 'LocalUserCreated', $this->once() )
                    ->with(
                        $this->callback( function ( $user ) use ( $username ) {
                            return $user->getName() === $username;
                        } ),
                        $this->equalTo( false )
                    );
                $expectLog[] = [ LogLevel::INFO, "Creating user {user} during account creation" ];
            } else {
                $this->hook( 'LocalUserCreated', $this->never() );
            }

            $ex = null;
            try {
                if ( $first ) {
                    $userReq = new UsernameAuthenticationRequest;
                    $userReq->username = $username;
                    $ret = $this->manager->beginAccountCreation(
                        $creator, [ $userReq, $req ], 'http://localhost/'
                    );
                } else {
                    $ret = $this->manager->continueAccountCreation( [ $req ] );
                }
                if ( $response instanceof \Exception ) {
                    $this->fail( 'Expected exception not thrown', "Response $i" );
                }
            } catch ( \Exception $ex ) {
                if ( !$response instanceof \Exception ) {
                    throw $ex;
                }
                $this->assertEquals( $response->getMessage(), $ex->getMessage(), "Response $i, exception" );
                $this->assertNull(
                    $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' ),
                    "Response $i, exception, session state"
                );
                $this->unhook( 'LocalUserCreated' );
                return;
            }

            $this->unhook( 'LocalUserCreated' );

            $this->assertSame( 'http://localhost/', $req->returnToUrl );

            if ( $success ) {
                $this->assertNotNull( $ret->loginRequest, "Response $i, login marker" );
                $this->assertContains(
                    $ret->loginRequest, $this->managerPriv->createdAccountAuthenticationRequests,
                    "Response $i, login marker"
                );

                $expectLog[] = [
                    LogLevel::INFO,
                    "MediaWiki\Auth\AuthManager::continueAccountCreation: Account creation succeeded for {user}"
                ];

                // Set some fields in the expected $response that we couldn't
                // know in provideAccountCreation().
                $response->username = $username;
                $response->loginRequest = $ret->loginRequest;
            } else {
                $this->assertNull( $ret->loginRequest, "Response $i, login marker" );
                $this->assertSame( [], $this->managerPriv->createdAccountAuthenticationRequests,
                    "Response $i, login marker" );
            }
            $ret->message = $this->message( $ret->message );
            $this->assertEquals( $response, $ret, "Response $i, response" );
            if ( $success || $response->status === AuthenticationResponse::FAIL ) {
                $this->assertNull(
                    $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' ),
                    "Response $i, session state"
                );
                foreach ( $providers as $p ) {
                    $this->assertSame( $response->status, $p->postCalled,
                        "Response $i, post-auth callback called" );
                }
            } else {
                $this->assertNotNull(
                    $this->request->getSession()->getSecret( 'AuthManager::accountCreationState' ),
                    "Response $i, session state"
                );
                foreach ( $ret->neededRequests as $neededReq ) {
                    $this->assertEquals( AuthManager::ACTION_CREATE, $neededReq->action,
                        "Response $i, neededRequest action" );
                }
                $this->assertEquals(
                    $ret->neededRequests,
                    $this->manager->getAuthenticationRequests( AuthManager::ACTION_CREATE_CONTINUE ),
                    "Response $i, continuation check"
                );
                foreach ( $providers as $p ) {
                    $this->assertFalse( $p->postCalled, "Response $i, post-auth callback not called" );
                }
            }

            if ( $created ) {
                $this->assertNotEquals( 0, \User::idFromName( $username ) );
            } else {
                $this->assertEquals( 0, \User::idFromName( $username ) );
            }

            $first = false;
        }

        $this->assertSame( $expectLog, $this->logger->getBuffer() );

        $this->assertSame(
            $maxLogId,
            $dbw->selectField( 'logging', 'MAX(log_id)', [ 'log_type' => 'newusers' ] )
        );
    }

    public function provideAccountCreation() {
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $good = StatusValue::newGood();

        return [
            'Pre-creation test fail in pre' => [
                StatusValue::newFatal( 'fail-from-pre' ), $good, $good,
                [],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-pre' ) ),
                ]
            ],
            'Pre-creation test fail in primary' => [
                $good, StatusValue::newFatal( 'fail-from-primary' ), $good,
                [],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-primary' ) ),
                ]
            ],
            'Pre-creation test fail in secondary' => [
                $good, $good, StatusValue::newFatal( 'fail-from-secondary' ),
                [],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-secondary' ) ),
                ]
            ],
            'Failure in primary' => [
                $good, $good, $good,
                $tmp = [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-primary' ) ),
                ],
                [],
                $tmp
            ],
            'All primary abstain' => [
                $good, $good, $good,
                [
                    AuthenticationResponse::newAbstain(),
                ],
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'authmanager-create-no-primary' ) )
                ]
            ],
            'Primary UI, then redirect, then fail' => [
                $good, $good, $good,
                $tmp = [
                    AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newRedirect( [ $req ], '/foo.html', [ 'foo' => 'bar' ] ),
                    AuthenticationResponse::newFail( $this->message( 'fail-in-primary-continue' ) ),
                ],
                [],
                $tmp
            ],
            'Primary redirect, then abstain' => [
                $good, $good, $good,
                [
                    $tmp = AuthenticationResponse::newRedirect(
                        [ $req ], '/foo.html', [ 'foo' => 'bar' ]
                    ),
                    AuthenticationResponse::newAbstain(),
                ],
                [],
                [
                    $tmp,
                    new \DomainException(
                        'MockPrimaryAuthenticationProvider::continuePrimaryAccountCreation() returned ABSTAIN'
                    )
                ]
            ],
            'Primary UI, then pass; secondary abstain' => [
                $good, $good, $good,
                [
                    $tmp1 = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newPass(),
                ],
                [
                    AuthenticationResponse::newAbstain(),
                ],
                [
                    $tmp1,
                    'created' => AuthenticationResponse::newPass( '' ),
                ]
            ],
            'Primary pass; secondary UI then pass' => [
                $good, $good, $good,
                [
                    AuthenticationResponse::newPass( '' ),
                ],
                [
                    $tmp1 = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newPass( '' ),
                ],
                [
                    'created' => $tmp1,
                    AuthenticationResponse::newPass( '' ),
                ]
            ],
            'Primary pass; secondary fail' => [
                $good, $good, $good,
                [
                    AuthenticationResponse::newPass(),
                ],
                [
                    AuthenticationResponse::newFail( $this->message( '...' ) ),
                ],
                [
                    'created' => new \DomainException(
                        'MockSecondaryAuthenticationProvider::beginSecondaryAccountCreation() returned FAIL. ' .
                            'Secondary providers are not allowed to fail account creation, ' .
                            'that should have been done via testForAccountCreation().'
                    )
                ]
            ],
        ];
    }

    public function testAccountCreationLogging( $isAnon, $logSubtype ) {
        $creator = $isAnon ? new \User : \User::newFromName( 'UTSysop' );
        $username = self::usernameForCreation();

        $this->initializeManager();

        // Set up lots of mocks...
        $mock = $this->getMockForAbstractClass(
            "MediaWiki\\Auth\\PrimaryAuthenticationProvider", []
        );
        $mock->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary' ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $mock->expects( $this->any() )->method( 'testForAccountCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )
            ->will( $this->returnValue( false ) );
        $mock->expects( $this->any() )->method( 'beginPrimaryAccountCreation' )
            ->will( $this->returnValue( AuthenticationResponse::newPass( $username ) ) );
        $mock->expects( $this->any() )->method( 'finishAccountCreation' )
            ->will( $this->returnValue( $logSubtype ) );

        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );
        $this->logger->setCollect( true );

        $this->config->set( 'NewUserLog', true );

        $dbw = wfGetDB( DB_MASTER );
        $maxLogId = $dbw->selectField( 'logging', 'MAX(log_id)', [ 'log_type' => 'newusers' ] );

        $userReq = new UsernameAuthenticationRequest;
        $userReq->username = $username;
        $reasonReq = new CreationReasonAuthenticationRequest;
        $reasonReq->reason = $this->toString();
        $ret = $this->manager->beginAccountCreation(
            $creator, [ $userReq, $reasonReq ], 'http://localhost/'
        );

        $this->assertSame( AuthenticationResponse::PASS, $ret->status );

        $user = \User::newFromName( $username );
        $this->assertNotEquals( 0, $user->getId(), 'sanity check' );
        $this->assertNotEquals( $creator->getId(), $user->getId(), 'sanity check' );

        $data = \DatabaseLogEntry::getSelectQueryData();
        $rows = iterator_to_array( $dbw->select(
            $data['tables'],
            $data['fields'],
            [
                'log_id > ' . (int)$maxLogId,
                'log_type' => 'newusers'
            ] + $data['conds'],
            __METHOD__,
            $data['options'],
            $data['join_conds']
        ) );
        $this->assertCount( 1, $rows );
        $entry = \DatabaseLogEntry::newFromRow( reset( $rows ) );

        $this->assertSame( $logSubtype ?: ( $isAnon ? 'create' : 'create2' ), $entry->getSubtype() );
        $this->assertSame(
            $isAnon ? $user->getId() : $creator->getId(),
            $entry->getPerformer()->getId()
        );
        $this->assertSame(
            $isAnon ? $user->getName() : $creator->getName(),
            $entry->getPerformer()->getName()
        );
        $this->assertSame( $user->getUserPage()->getFullText(), $entry->getTarget()->getFullText() );
        $this->assertSame( [ '4::userid' => $user->getId() ], $entry->getParameters() );
        $this->assertSame( $this->toString(), $entry->getComment() );
    }

    public static function provideAccountCreationLogging() {
        return [
            [ true, null ],
            [ true, 'foobar' ],
            [ false, null ],
            [ false, 'byemail' ],
        ];
    }

    public function testAutoAccountCreation() {
        global $wgGroupPermissions, $wgHooks;

        // PHPUnit seems to have a bug where it will call the ->with()
        // callbacks for our hooks again after the test is run (WTF?), which
        // breaks here because $username no longer matches $user by the end of
        // the testing.
        $workaroundPHPUnitBug = false;

        $username = self::usernameForCreation();
        $this->initializeManager();

        $this->stashMwGlobals( [ 'wgGroupPermissions' ] );
        $wgGroupPermissions['*']['createaccount'] = true;
        $wgGroupPermissions['*']['autocreateaccount'] = false;

        \ObjectCache::$instances[__METHOD__] = new \HashBagOStuff();
        $this->setMwGlobals( [ 'wgMainCacheType' => __METHOD__ ] );

        // Set up lots of mocks...
        $mocks = [];
        foreach ( [ 'pre', 'primary', 'secondary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
        }

        $good = StatusValue::newGood();
        $callback = $this->callback( function ( $user ) use ( &$username, &$workaroundPHPUnitBug ) {
            return $workaroundPHPUnitBug || $user->getName() === $username;
        } );

        $mocks['pre']->expects( $this->exactly( 12 ) )->method( 'testUserForCreation' )
            ->with( $callback, $this->identicalTo( AuthManager::AUTOCREATE_SOURCE_SESSION ) )
            ->will( $this->onConsecutiveCalls(
                StatusValue::newFatal( 'ok' ), StatusValue::newFatal( 'ok' ), // For testing permissions
                StatusValue::newFatal( 'fail-in-pre' ), $good, $good,
                $good, // backoff test
                $good, // addToDatabase fails test
                $good, // addToDatabase throws test
                $good, // addToDatabase exists test
                $good, $good, $good // success
            ) );

        $mocks['primary']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mocks['primary']->expects( $this->any() )->method( 'testUserExists' )
            ->will( $this->returnValue( true ) );
        $mocks['primary']->expects( $this->exactly( 9 ) )->method( 'testUserForCreation' )
            ->with( $callback, $this->identicalTo( AuthManager::AUTOCREATE_SOURCE_SESSION ) )
            ->will( $this->onConsecutiveCalls(
                StatusValue::newFatal( 'fail-in-primary' ), $good,
                $good, // backoff test
                $good, // addToDatabase fails test
                $good, // addToDatabase throws test
                $good, // addToDatabase exists test
                $good, $good, $good
            ) );
        $mocks['primary']->expects( $this->exactly( 3 ) )->method( 'autoCreatedAccount' )
            ->with( $callback, $this->identicalTo( AuthManager::AUTOCREATE_SOURCE_SESSION ) );

        $mocks['secondary']->expects( $this->exactly( 8 ) )->method( 'testUserForCreation' )
            ->with( $callback, $this->identicalTo( AuthManager::AUTOCREATE_SOURCE_SESSION ) )
            ->will( $this->onConsecutiveCalls(
                StatusValue::newFatal( 'fail-in-secondary' ),
                $good, // backoff test
                $good, // addToDatabase fails test
                $good, // addToDatabase throws test
                $good, // addToDatabase exists test
                $good, $good, $good
            ) );
        $mocks['secondary']->expects( $this->exactly( 3 ) )->method( 'autoCreatedAccount' )
            ->with( $callback, $this->identicalTo( AuthManager::AUTOCREATE_SOURCE_SESSION ) );

        $this->preauthMocks = [ $mocks['pre'] ];
        $this->primaryauthMocks = [ $mocks['primary'] ];
        $this->secondaryauthMocks = [ $mocks['secondary'] ];
        $this->initializeManager( true );
        $session = $this->request->getSession();

        $logger = new \TestLogger( true, function ( $m ) {
            $m = str_replace( 'MediaWiki\\Auth\\AuthManager::autoCreateUser: ', '', $m );
            return $m;
        } );
        $this->manager->setLogger( $logger );

        try {
            $user = \User::newFromName( 'UTSysop' );
            $this->manager->autoCreateUser( $user, 'InvalidSource', true );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \InvalidArgumentException $ex ) {
            $this->assertSame( 'Unknown auto-creation source: InvalidSource', $ex->getMessage() );
        }

        // First, check an existing user
        $session->clear();
        $user = \User::newFromName( 'UTSysop' );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $expect = \Status::newGood();
        $expect->warning( 'userexists' );
        $this->assertEquals( $expect, $ret );
        $this->assertNotEquals( 0, $user->getId() );
        $this->assertSame( 'UTSysop', $user->getName() );
        $this->assertEquals( $user->getId(), $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, '{username} already exists locally' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        $session->clear();
        $user = \User::newFromName( 'UTSysop' );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, false );
        $this->unhook( 'LocalUserCreated' );
        $expect = \Status::newGood();
        $expect->warning( 'userexists' );
        $this->assertEquals( $expect, $ret );
        $this->assertNotEquals( 0, $user->getId() );
        $this->assertSame( 'UTSysop', $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, '{username} already exists locally' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        // Wiki is read-only
        $session->clear();
        $this->setMwGlobals( [ 'wgReadOnly' => 'Because' ] );
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'readonlytext', 'Because' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'denied by wfReadOnly(): {reason}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->setMwGlobals( [ 'wgReadOnly' => false ] );

        // Session blacklisted
        $session->clear();
        $session->set( 'AuthManager::AutoCreateBlacklist', 'test' );
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'test' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'blacklisted in session {sessionid}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        $session->clear();
        $session->set( 'AuthManager::AutoCreateBlacklist', StatusValue::newFatal( 'test2' ) );
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'test2' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'blacklisted in session {sessionid}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        // Uncreatable name
        $session->clear();
        $user = \User::newFromName( $username . '@' );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'noname' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username . '@', $user->getId() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'name "{username}" is not creatable' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame( 'noname', $session->get( 'AuthManager::AutoCreateBlacklist' ) );

        // IP unable to create accounts
        $wgGroupPermissions['*']['createaccount'] = false;
        $wgGroupPermissions['*']['autocreateaccount'] = false;
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'authmanager-autocreate-noperm' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'IP lacks the ability to create or autocreate accounts' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame(
            'authmanager-autocreate-noperm', $session->get( 'AuthManager::AutoCreateBlacklist' )
        );

        // Test that both permutations of permissions are allowed
        // (this hits the two "ok" entries in $mocks['pre'])
        $wgGroupPermissions['*']['createaccount'] = false;
        $wgGroupPermissions['*']['autocreateaccount'] = true;
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'ok' ), $ret );

        $wgGroupPermissions['*']['createaccount'] = true;
        $wgGroupPermissions['*']['autocreateaccount'] = false;
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'ok' ), $ret );
        $logger->clearBuffer();

        // Test lock fail
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $cache = \ObjectCache::getLocalClusterInstance();
        $lock = $cache->getScopedLock( $cache->makeGlobalKey( 'account', md5( $username ) ) );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        unset( $lock );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'usernameinprogress' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'Could not acquire account creation lock' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        // Test pre-authentication provider fail
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'fail-in-pre' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'Provider denied creation of {username}: {reason}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertEquals(
            StatusValue::newFatal( 'fail-in-pre' ), $session->get( 'AuthManager::AutoCreateBlacklist' )
        );

        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'fail-in-primary' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'Provider denied creation of {username}: {reason}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertEquals(
            StatusValue::newFatal( 'fail-in-primary' ), $session->get( 'AuthManager::AutoCreateBlacklist' )
        );

        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'fail-in-secondary' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, 'Provider denied creation of {username}: {reason}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertEquals(
            StatusValue::newFatal( 'fail-in-secondary' ), $session->get( 'AuthManager::AutoCreateBlacklist' )
        );

        // Test backoff
        $cache = \ObjectCache::getLocalClusterInstance();
        $backoffKey = wfMemcKey( 'AuthManager', 'autocreate-failed', md5( $username ) );
        $cache->set( $backoffKey, true );
        $session->clear();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newFatal( 'authmanager-autocreate-exception' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::DEBUG, '{username} denied by prior creation attempt failures' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame( null, $session->get( 'AuthManager::AutoCreateBlacklist' ) );
        $cache->delete( $backoffKey );

        // Test addToDatabase fails
        $session->clear();
        $user = $this->getMock( 'User', [ 'addToDatabase' ] );
        $user->expects( $this->once() )->method( 'addToDatabase' )
            ->will( $this->returnValue( \Status::newFatal( 'because' ) ) );
        $user->setName( $username );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->assertEquals( \Status::newFatal( 'because' ), $ret );
        $this->assertEquals( 0, $user->getId() );
        $this->assertNotEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'creating new user ({username}) - from: {from}' ],
            [ LogLevel::ERROR, '{username} failed with message {msg}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame( null, $session->get( 'AuthManager::AutoCreateBlacklist' ) );

        // Test addToDatabase throws an exception
        $cache = \ObjectCache::getLocalClusterInstance();
        $backoffKey = wfMemcKey( 'AuthManager', 'autocreate-failed', md5( $username ) );
        $this->assertFalse( $cache->get( $backoffKey ), 'sanity check' );
        $session->clear();
        $user = $this->getMock( 'User', [ 'addToDatabase' ] );
        $user->expects( $this->once() )->method( 'addToDatabase' )
            ->will( $this->throwException( new \Exception( 'Excepted' ) ) );
        $user->setName( $username );
        try {
            $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \Exception $ex ) {
            $this->assertSame( 'Excepted', $ex->getMessage() );
        }
        $this->assertEquals( 0, $user->getId() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'creating new user ({username}) - from: {from}' ],
            [ LogLevel::ERROR, '{username} failed with exception {exception}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame( null, $session->get( 'AuthManager::AutoCreateBlacklist' ) );
        $this->assertNotEquals( false, $cache->get( $backoffKey ) );
        $cache->delete( $backoffKey );

        // Test addToDatabase fails because the user already exists.
        $session->clear();
        $user = $this->getMock( 'User', [ 'addToDatabase' ] );
        $user->expects( $this->once() )->method( 'addToDatabase' )
            ->will( $this->returnCallback( function () use ( $username, &$user ) {
                $oldUser = \User::newFromName( $username );
                $status = $oldUser->addToDatabase();
                $this->assertTrue( $status->isOK(), 'sanity check' );
                $user->setId( $oldUser->getId() );
                return \Status::newFatal( 'userexists' );
            } ) );
        $user->setName( $username );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $expect = \Status::newGood();
        $expect->warning( 'userexists' );
        $this->assertEquals( $expect, $ret );
        $this->assertNotEquals( 0, $user->getId() );
        $this->assertEquals( $username, $user->getName() );
        $this->assertEquals( $user->getId(), $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'creating new user ({username}) - from: {from}' ],
            [ LogLevel::INFO, '{username} already exists locally (race)' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame( null, $session->get( 'AuthManager::AutoCreateBlacklist' ) );

        // Success!
        $session->clear();
        $username = self::usernameForCreation();
        $user = \User::newFromName( $username );
        $this->hook( 'AuthPluginAutoCreate', $this->once() )
            ->with( $callback );
        $this->hideDeprecated( 'AuthPluginAutoCreate hook (used in ' .
                get_class( $wgHooks['AuthPluginAutoCreate'][0] ) . '::onAuthPluginAutoCreate)' );
        $this->hook( 'LocalUserCreated', $this->once() )
            ->with( $callback, $this->equalTo( true ) );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, true );
        $this->unhook( 'LocalUserCreated' );
        $this->unhook( 'AuthPluginAutoCreate' );
        $this->assertEquals( \Status::newGood(), $ret );
        $this->assertNotEquals( 0, $user->getId() );
        $this->assertEquals( $username, $user->getName() );
        $this->assertEquals( $user->getId(), $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'creating new user ({username}) - from: {from}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();

        $dbw = wfGetDB( DB_MASTER );
        $maxLogId = $dbw->selectField( 'logging', 'MAX(log_id)', [ 'log_type' => 'newusers' ] );
        $session->clear();
        $username = self::usernameForCreation();
        $user = \User::newFromName( $username );
        $this->hook( 'LocalUserCreated', $this->once() )
            ->with( $callback, $this->equalTo( true ) );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, false );
        $this->unhook( 'LocalUserCreated' );
        $this->assertEquals( \Status::newGood(), $ret );
        $this->assertNotEquals( 0, $user->getId() );
        $this->assertEquals( $username, $user->getName() );
        $this->assertEquals( 0, $session->getUser()->getId() );
        $this->assertSame( [
            [ LogLevel::INFO, 'creating new user ({username}) - from: {from}' ],
        ], $logger->getBuffer() );
        $logger->clearBuffer();
        $this->assertSame(
            $maxLogId,
            $dbw->selectField( 'logging', 'MAX(log_id)', [ 'log_type' => 'newusers' ] )
        );

        $this->config->set( 'NewUserLog', true );
        $session->clear();
        $username = self::usernameForCreation();
        $user = \User::newFromName( $username );
        $ret = $this->manager->autoCreateUser( $user, AuthManager::AUTOCREATE_SOURCE_SESSION, false );
        $this->assertEquals( \Status::newGood(), $ret );
        $logger->clearBuffer();

        $data = \DatabaseLogEntry::getSelectQueryData();
        $rows = iterator_to_array( $dbw->select(
            $data['tables'],
            $data['fields'],
            [
                'log_id > ' . (int)$maxLogId,
                'log_type' => 'newusers'
            ] + $data['conds'],
            __METHOD__,
            $data['options'],
            $data['join_conds']
        ) );
        $this->assertCount( 1, $rows );
        $entry = \DatabaseLogEntry::newFromRow( reset( $rows ) );

        $this->assertSame( 'autocreate', $entry->getSubtype() );
        $this->assertSame( $user->getId(), $entry->getPerformer()->getId() );
        $this->assertSame( $user->getName(), $entry->getPerformer()->getName() );
        $this->assertSame( $user->getUserPage()->getFullText(), $entry->getTarget()->getFullText() );
        $this->assertSame( [ '4::userid' => $user->getId() ], $entry->getParameters() );

        $workaroundPHPUnitBug = true;
    }

    public function testGetAuthenticationRequests( $action, $expect, $state = [] ) {
        $makeReq = function ( $key ) use ( $action ) {
            $req = $this->getMock( AuthenticationRequest::class );
            $req->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $req->action = $action === AuthManager::ACTION_UNLINK ? AuthManager::ACTION_REMOVE : $action;
            $req->key = $key;
            return $req;
        };
        $cmpReqs = function ( $a, $b ) {
            $ret = strcmp( get_class( $a ), get_class( $b ) );
            if ( !$ret ) {
                $ret = strcmp( $a->key, $b->key );
            }
            return $ret;
        };

        $good = StatusValue::newGood();

        $mocks = [];
        foreach ( [ 'pre', 'primary', 'secondary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $mocks[$key]->expects( $this->any() )->method( 'getAuthenticationRequests' )
                ->will( $this->returnCallback( function ( $action ) use ( $key, $makeReq ) {
                    return [ $makeReq( "$key-$action" ), $makeReq( 'generic' ) ];
                } ) );
            $mocks[$key]->expects( $this->any() )->method( 'providerAllowsAuthenticationDataChange' )
                ->will( $this->returnValue( $good ) );
        }

        $primaries = [];
        foreach ( [
            PrimaryAuthenticationProvider::TYPE_NONE,
            PrimaryAuthenticationProvider::TYPE_CREATE,
            PrimaryAuthenticationProvider::TYPE_LINK
        ] as $type ) {
            $class = 'PrimaryAuthenticationProvider';
            $mocks["primary-$type"] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks["primary-$type"]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( "primary-$type" ) );
            $mocks["primary-$type"]->expects( $this->any() )->method( 'accountCreationType' )
                ->will( $this->returnValue( $type ) );
            $mocks["primary-$type"]->expects( $this->any() )->method( 'getAuthenticationRequests' )
                ->will( $this->returnCallback( function ( $action ) use ( $type, $makeReq ) {
                    return [ $makeReq( "primary-$type-$action" ), $makeReq( 'generic' ) ];
                } ) );
            $mocks["primary-$type"]->expects( $this->any() )
                ->method( 'providerAllowsAuthenticationDataChange' )
                ->will( $this->returnValue( $good ) );
            $this->primaryauthMocks[] = $mocks["primary-$type"];
        }

        $mocks['primary2'] = $this->getMockForAbstractClass(
            PrimaryAuthenticationProvider::class, [], "MockPrimaryAuthenticationProvider"
        );
        $mocks['primary2']->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary2' ) );
        $mocks['primary2']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $mocks['primary2']->expects( $this->any() )->method( 'getAuthenticationRequests' )
            ->will( $this->returnValue( [] ) );
        $mocks['primary2']->expects( $this->any() )
            ->method( 'providerAllowsAuthenticationDataChange' )
            ->will( $this->returnCallback( function ( $req ) use ( $good ) {
                return $req->key === 'generic' ? StatusValue::newFatal( 'no' ) : $good;
            } ) );
        $this->primaryauthMocks[] = $mocks['primary2'];

        $this->preauthMocks = [ $mocks['pre'] ];
        $this->secondaryauthMocks = [ $mocks['secondary'] ];
        $this->initializeManager( true );

        if ( $state ) {
            if ( isset( $state['continueRequests'] ) ) {
                $state['continueRequests'] = array_map( $makeReq, $state['continueRequests'] );
            }
            if ( $action === AuthManager::ACTION_LOGIN_CONTINUE ) {
                $this->request->getSession()->setSecret( 'AuthManager::authnState', $state );
            } elseif ( $action === AuthManager::ACTION_CREATE_CONTINUE ) {
                $this->request->getSession()->setSecret( 'AuthManager::accountCreationState', $state );
            } elseif ( $action === AuthManager::ACTION_LINK_CONTINUE ) {
                $this->request->getSession()->setSecret( 'AuthManager::accountLinkState', $state );
            }
        }

        $expectReqs = array_map( $makeReq, $expect );
        if ( $action === AuthManager::ACTION_LOGIN ) {
            $req = new RememberMeAuthenticationRequest;
            $req->action = $action;
            $req->required = AuthenticationRequest::REQUIRED;
            $expectReqs[] = $req;
        } elseif ( $action === AuthManager::ACTION_CREATE ) {
            $req = new UsernameAuthenticationRequest;
            $req->action = $action;
            $expectReqs[] = $req;
            $req = new UserDataAuthenticationRequest;
            $req->action = $action;
            $req->required = AuthenticationRequest::REQUIRED;
            $expectReqs[] = $req;
        }
        usort( $expectReqs, $cmpReqs );

        $actual = $this->manager->getAuthenticationRequests( $action );
        foreach ( $actual as $req ) {
            // Don't test this here.
            $req->required = AuthenticationRequest::REQUIRED;
        }
        usort( $actual, $cmpReqs );

        $this->assertEquals( $expectReqs, $actual );

        // Test CreationReasonAuthenticationRequest gets returned
        if ( $action === AuthManager::ACTION_CREATE ) {
            $req = new CreationReasonAuthenticationRequest;
            $req->action = $action;
            $req->required = AuthenticationRequest::REQUIRED;
            $expectReqs[] = $req;
            usort( $expectReqs, $cmpReqs );

            $actual = $this->manager->getAuthenticationRequests( $action, \User::newFromName( 'UTSysop' ) );
            foreach ( $actual as $req ) {
                // Don't test this here.
                $req->required = AuthenticationRequest::REQUIRED;
            }
            usort( $actual, $cmpReqs );

            $this->assertEquals( $expectReqs, $actual );
        }
    }

    public static function provideGetAuthenticationRequests() {
        return [
            [
                AuthManager::ACTION_LOGIN,
                [ 'pre-login', 'primary-none-login', 'primary-create-login',
                    'primary-link-login', 'secondary-login', 'generic' ],
            ],
            [
                AuthManager::ACTION_CREATE,
                [ 'pre-create', 'primary-none-create', 'primary-create-create',
                    'primary-link-create', 'secondary-create', 'generic' ],
            ],
            [
                AuthManager::ACTION_LINK,
                [ 'primary-link-link', 'generic' ],
            ],
            [
                AuthManager::ACTION_CHANGE,
                [ 'primary-none-change', 'primary-create-change', 'primary-link-change',
                    'secondary-change' ],
            ],
            [
                AuthManager::ACTION_REMOVE,
                [ 'primary-none-remove', 'primary-create-remove', 'primary-link-remove',
                    'secondary-remove' ],
            ],
            [
                AuthManager::ACTION_UNLINK,
                [ 'primary-link-remove' ],
            ],
            [
                AuthManager::ACTION_LOGIN_CONTINUE,
                [],
            ],
            [
                AuthManager::ACTION_LOGIN_CONTINUE,
                $reqs = [ 'continue-login', 'foo', 'bar' ],
                [
                    'continueRequests' => $reqs,
                ],
            ],
            [
                AuthManager::ACTION_CREATE_CONTINUE,
                [],
            ],
            [
                AuthManager::ACTION_CREATE_CONTINUE,
                $reqs = [ 'continue-create', 'foo', 'bar' ],
                [
                    'continueRequests' => $reqs,
                ],
            ],
            [
                AuthManager::ACTION_LINK_CONTINUE,
                [],
            ],
            [
                AuthManager::ACTION_LINK_CONTINUE,
                $reqs = [ 'continue-link', 'foo', 'bar' ],
                [
                    'continueRequests' => $reqs,
                ],
            ],
        ];
    }

    public function testGetAuthenticationRequestsRequired() {
        $makeReq = function ( $key, $required ) {
            $req = $this->getMock( AuthenticationRequest::class );
            $req->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $req->action = AuthManager::ACTION_LOGIN;
            $req->key = $key;
            $req->required = $required;
            return $req;
        };
        $cmpReqs = function ( $a, $b ) {
            $ret = strcmp( get_class( $a ), get_class( $b ) );
            if ( !$ret ) {
                $ret = strcmp( $a->key, $b->key );
            }
            return $ret;
        };

        $good = StatusValue::newGood();

        $primary1 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $primary1->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary1' ) );
        $primary1->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $primary1->expects( $this->any() )->method( 'getAuthenticationRequests' )
            ->will( $this->returnCallback( function ( $action ) use ( $makeReq ) {
                return [
                    $makeReq( "primary-shared", AuthenticationRequest::REQUIRED ),
                    $makeReq( "required", AuthenticationRequest::REQUIRED ),
                    $makeReq( "optional", AuthenticationRequest::OPTIONAL ),
                    $makeReq( "foo", AuthenticationRequest::REQUIRED ),
                    $makeReq( "bar", AuthenticationRequest::REQUIRED ),
                    $makeReq( "baz", AuthenticationRequest::OPTIONAL ),
                ];
            } ) );

        $primary2 = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $primary2->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'primary2' ) );
        $primary2->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $primary2->expects( $this->any() )->method( 'getAuthenticationRequests' )
            ->will( $this->returnCallback( function ( $action ) use ( $makeReq ) {
                return [
                    $makeReq( "primary-shared", AuthenticationRequest::REQUIRED ),
                    $makeReq( "required2", AuthenticationRequest::REQUIRED ),
                    $makeReq( "optional2", AuthenticationRequest::OPTIONAL ),
                ];
            } ) );

        $secondary = $this->getMockForAbstractClass( SecondaryAuthenticationProvider::class );
        $secondary->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'secondary' ) );
        $secondary->expects( $this->any() )->method( 'getAuthenticationRequests' )
            ->will( $this->returnCallback( function ( $action ) use ( $makeReq ) {
                return [
                    $makeReq( "foo", AuthenticationRequest::OPTIONAL ),
                    $makeReq( "bar", AuthenticationRequest::REQUIRED ),
                    $makeReq( "baz", AuthenticationRequest::REQUIRED ),
                ];
            } ) );

        $rememberReq = new RememberMeAuthenticationRequest;
        $rememberReq->action = AuthManager::ACTION_LOGIN;

        $this->primaryauthMocks = [ $primary1, $primary2 ];
        $this->secondaryauthMocks = [ $secondary ];
        $this->initializeManager( true );

        $actual = $this->manager->getAuthenticationRequests( AuthManager::ACTION_LOGIN );
        $expected = [
            $rememberReq,
            $makeReq( "primary-shared", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "required", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "required2", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "optional", AuthenticationRequest::OPTIONAL ),
            $makeReq( "optional2", AuthenticationRequest::OPTIONAL ),
            $makeReq( "foo", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "bar", AuthenticationRequest::REQUIRED ),
            $makeReq( "baz", AuthenticationRequest::REQUIRED ),
        ];
        usort( $actual, $cmpReqs );
        usort( $expected, $cmpReqs );
        $this->assertEquals( $expected, $actual );

        $this->primaryauthMocks = [ $primary1 ];
        $this->secondaryauthMocks = [ $secondary ];
        $this->initializeManager( true );

        $actual = $this->manager->getAuthenticationRequests( AuthManager::ACTION_LOGIN );
        $expected = [
            $rememberReq,
            $makeReq( "primary-shared", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "required", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "optional", AuthenticationRequest::OPTIONAL ),
            $makeReq( "foo", AuthenticationRequest::PRIMARY_REQUIRED ),
            $makeReq( "bar", AuthenticationRequest::REQUIRED ),
            $makeReq( "baz", AuthenticationRequest::REQUIRED ),
        ];
        usort( $actual, $cmpReqs );
        usort( $expected, $cmpReqs );
        $this->assertEquals( $expected, $actual );
    }

    public function testAllowsPropertyChange() {
        $mocks = [];
        foreach ( [ 'primary', 'secondary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );
            $mocks[$key]->expects( $this->any() )->method( 'providerAllowsPropertyChange' )
                ->will( $this->returnCallback( function ( $prop ) use ( $key ) {
                    return $prop !== $key;
                } ) );
        }

        $this->primaryauthMocks = [ $mocks['primary'] ];
        $this->secondaryauthMocks = [ $mocks['secondary'] ];
        $this->initializeManager( true );

        $this->assertTrue( $this->manager->allowsPropertyChange( 'foo' ) );
        $this->assertFalse( $this->manager->allowsPropertyChange( 'primary' ) );
        $this->assertFalse( $this->manager->allowsPropertyChange( 'secondary' ) );
    }

    public function testAutoCreateOnLogin() {
        $username = self::usernameForCreation();

        $req = $this->getMock( AuthenticationRequest::class );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'primary' ) );
        $mock->expects( $this->any() )->method( 'beginPrimaryAuthentication' )
            ->will( $this->returnValue( AuthenticationResponse::newPass( $username ) ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( true ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );

        $mock2 = $this->getMockForAbstractClass( SecondaryAuthenticationProvider::class );
        $mock2->expects( $this->any() )->method( 'getUniqueId' )
            ->will( $this->returnValue( 'secondary' ) );
        $mock2->expects( $this->any() )->method( 'beginSecondaryAuthentication' )->will(
            $this->returnValue(
                AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) )
            )
        );
        $mock2->expects( $this->any() )->method( 'continueSecondaryAuthentication' )
            ->will( $this->returnValue( AuthenticationResponse::newAbstain() ) );
        $mock2->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newGood() ) );

        $this->primaryauthMocks = [ $mock ];
        $this->secondaryauthMocks = [ $mock2 ];
        $this->initializeManager( true );
        $this->manager->setLogger( new \Psr\Log\NullLogger() );
        $session = $this->request->getSession();
        $session->clear();

        $this->assertSame( 0, \User::newFromName( $username )->getId(),
            'sanity check' );

        $callback = $this->callback( function ( $user ) use ( $username ) {
            return $user->getName() === $username;
        } );

        $this->hook( 'UserLoggedIn', $this->never() );
        $this->hook( 'LocalUserCreated', $this->once() )->with( $callback, $this->equalTo( true ) );
        $ret = $this->manager->beginAuthentication( [], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->unhook( 'UserLoggedIn' );
        $this->assertSame( AuthenticationResponse::UI, $ret->status );

        $id = (int)\User::newFromName( $username )->getId();
        $this->assertNotSame( 0, \User::newFromName( $username )->getId() );
        $this->assertSame( 0, $session->getUser()->getId() );

        $this->hook( 'UserLoggedIn', $this->once() )->with( $callback );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->continueAuthentication( [] );
        $this->unhook( 'LocalUserCreated' );
        $this->unhook( 'UserLoggedIn' );
        $this->assertSame( AuthenticationResponse::PASS, $ret->status );
        $this->assertSame( $username, $ret->username );
        $this->assertSame( $id, $session->getUser()->getId() );
    }

    public function testAutoCreateFailOnLogin() {
        $username = self::usernameForCreation();

        $mock = $this->getMockForAbstractClass(
            PrimaryAuthenticationProvider::class, [], "MockPrimaryAuthenticationProvider" );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'primary' ) );
        $mock->expects( $this->any() )->method( 'beginPrimaryAuthentication' )
            ->will( $this->returnValue( AuthenticationResponse::newPass( $username ) ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mock->expects( $this->any() )->method( 'testUserExists' )->will( $this->returnValue( true ) );
        $mock->expects( $this->any() )->method( 'testUserForCreation' )
            ->will( $this->returnValue( StatusValue::newFatal( 'fail-from-primary' ) ) );

        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );
        $this->manager->setLogger( new \Psr\Log\NullLogger() );
        $session = $this->request->getSession();
        $session->clear();

        $this->assertSame( 0, $session->getUser()->getId(),
            'sanity check' );
        $this->assertSame( 0, \User::newFromName( $username )->getId(),
            'sanity check' );

        $this->hook( 'UserLoggedIn', $this->never() );
        $this->hook( 'LocalUserCreated', $this->never() );
        $ret = $this->manager->beginAuthentication( [], 'http://localhost/' );
        $this->unhook( 'LocalUserCreated' );
        $this->unhook( 'UserLoggedIn' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'authmanager-authn-autocreate-failed', $ret->message->getKey() );

        $this->assertSame( 0, \User::newFromName( $username )->getId() );
        $this->assertSame( 0, $session->getUser()->getId() );
    }

    public function testAuthenticationSessionData() {
        $this->initializeManager( true );

        $this->assertNull( $this->manager->getAuthenticationSessionData( 'foo' ) );
        $this->manager->setAuthenticationSessionData( 'foo', 'foo!' );
        $this->manager->setAuthenticationSessionData( 'bar', 'bar!' );
        $this->assertSame( 'foo!', $this->manager->getAuthenticationSessionData( 'foo' ) );
        $this->assertSame( 'bar!', $this->manager->getAuthenticationSessionData( 'bar' ) );
        $this->manager->removeAuthenticationSessionData( 'foo' );
        $this->assertNull( $this->manager->getAuthenticationSessionData( 'foo' ) );
        $this->assertSame( 'bar!', $this->manager->getAuthenticationSessionData( 'bar' ) );
        $this->manager->removeAuthenticationSessionData( 'bar' );
        $this->assertNull( $this->manager->getAuthenticationSessionData( 'bar' ) );

        $this->manager->setAuthenticationSessionData( 'foo', 'foo!' );
        $this->manager->setAuthenticationSessionData( 'bar', 'bar!' );
        $this->manager->removeAuthenticationSessionData( null );
        $this->assertNull( $this->manager->getAuthenticationSessionData( 'foo' ) );
        $this->assertNull( $this->manager->getAuthenticationSessionData( 'bar' ) );

    }

    public function testCanLinkAccounts() {
        $types = [
            PrimaryAuthenticationProvider::TYPE_CREATE => true,
            PrimaryAuthenticationProvider::TYPE_LINK => true,
            PrimaryAuthenticationProvider::TYPE_NONE => false,
        ];

        foreach ( $types as $type => $can ) {
            $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
            $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( $type ) );
            $mock->expects( $this->any() )->method( 'accountCreationType' )
                ->will( $this->returnValue( $type ) );
            $this->primaryauthMocks = [ $mock ];
            $this->initializeManager( true );
            $this->assertSame( $can, $this->manager->canCreateAccounts(), $type );
        }
    }

    public function testBeginAccountLink() {
        $user = \User::newFromName( 'UTSysop' );
        $this->initializeManager();

        $this->request->getSession()->setSecret( 'AuthManager::accountLinkState', 'test' );
        try {
            $this->manager->beginAccountLink( $user, [], 'http://localhost/' );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertEquals( 'Account linking is not possible', $ex->getMessage() );
        }
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ) );

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $ret = $this->manager->beginAccountLink( new \User, [], 'http://localhost/' );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );

        $ret = $this->manager->beginAccountLink(
            \User::newFromName( 'UTDoesNotExist' ), [], 'http://localhost/'
        );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'authmanager-userdoesnotexist', $ret->message->getKey() );
    }

    public function testContinueAccountLink() {
        $user = \User::newFromName( 'UTSysop' );
        $this->initializeManager();

        $session = [
            'userid' => $user->getId(),
            'username' => $user->getName(),
            'primary' => 'X',
        ];

        try {
            $this->manager->continueAccountLink( [] );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \LogicException $ex ) {
            $this->assertEquals( 'Account linking is not possible', $ex->getMessage() );
        }

        $mock = $this->getMockForAbstractClass( PrimaryAuthenticationProvider::class );
        $mock->expects( $this->any() )->method( 'getUniqueId' )->will( $this->returnValue( 'X' ) );
        $mock->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $mock->expects( $this->any() )->method( 'beginPrimaryAccountLink' )->will(
            $this->returnValue( AuthenticationResponse::newFail( $this->message( 'fail' ) ) )
        );
        $this->primaryauthMocks = [ $mock ];
        $this->initializeManager( true );

        $this->request->getSession()->setSecret( 'AuthManager::accountLinkState', null );
        $ret = $this->manager->continueAccountLink( [] );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'authmanager-link-not-in-progress', $ret->message->getKey() );

        $this->request->getSession()->setSecret( 'AuthManager::accountLinkState',
            [ 'username' => $user->getName() . '<>' ] + $session );
        $ret = $this->manager->continueAccountLink( [] );
        $this->assertSame( AuthenticationResponse::FAIL, $ret->status );
        $this->assertSame( 'noname', $ret->message->getKey() );
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ) );

        $id = $user->getId();
        $this->request->getSession()->setSecret( 'AuthManager::accountLinkState',
            [ 'userid' => $id + 1 ] + $session );
        try {
            $ret = $this->manager->continueAccountLink( [] );
            $this->fail( 'Expected exception not thrown' );
        } catch ( \UnexpectedValueException $ex ) {
            $this->assertEquals(
                "User \"{$user->getName()}\" is valid, but ID $id != " . ( $id + 1 ) . '!',
                $ex->getMessage()
            );
        }
        $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ) );
    }

    public function testAccountLink(
        StatusValue $preTest, array $primaryResponses, array $managerResponses
    ) {
        $user = \User::newFromName( 'UTSysop' );

        $this->initializeManager();

        // Set up lots of mocks...
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $req->primary = $primaryResponses;
        $mocks = [];

        foreach ( [ 'pre', 'primary' ] as $key ) {
            $class = ucfirst( $key ) . 'AuthenticationProvider';
            $mocks[$key] = $this->getMockForAbstractClass(
                "MediaWiki\\Auth\\$class", [], "Mock$class"
            );
            $mocks[$key]->expects( $this->any() )->method( 'getUniqueId' )
                ->will( $this->returnValue( $key ) );

            for ( $i = 2; $i <= 3; $i++ ) {
                $mocks[$key . $i] = $this->getMockForAbstractClass(
                    "MediaWiki\\Auth\\$class", [], "Mock$class"
                );
                $mocks[$key . $i]->expects( $this->any() )->method( 'getUniqueId' )
                    ->will( $this->returnValue( $key . $i ) );
            }
        }

        $mocks['pre']->expects( $this->any() )->method( 'testForAccountLink' )
            ->will( $this->returnCallback(
                function ( $u )
                    use ( $user, $preTest )
                {
                    $this->assertSame( $user->getId(), $u->getId() );
                    $this->assertSame( $user->getName(), $u->getName() );
                    return $preTest;
                }
            ) );

        $mocks['pre2']->expects( $this->atMost( 1 ) )->method( 'testForAccountLink' )
            ->will( $this->returnValue( StatusValue::newGood() ) );

        $mocks['primary']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $ct = count( $req->primary );
        $callback = $this->returnCallback( function ( $u, $reqs ) use ( $user, $req ) {
            $this->assertSame( $user->getId(), $u->getId() );
            $this->assertSame( $user->getName(), $u->getName() );
            $foundReq = false;
            foreach ( $reqs as $r ) {
                $this->assertSame( $user->getName(), $r->username );
                $foundReq = $foundReq || get_class( $r ) === get_class( $req );
            }
            $this->assertTrue( $foundReq, '$reqs contains $req' );
            return array_shift( $req->primary );
        } );
        $mocks['primary']->expects( $this->exactly( min( 1, $ct ) ) )
            ->method( 'beginPrimaryAccountLink' )
            ->will( $callback );
        $mocks['primary']->expects( $this->exactly( max( 0, $ct - 1 ) ) )
            ->method( 'continuePrimaryAccountLink' )
            ->will( $callback );

        $abstain = AuthenticationResponse::newAbstain();
        $mocks['primary2']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_LINK ) );
        $mocks['primary2']->expects( $this->atMost( 1 ) )->method( 'beginPrimaryAccountLink' )
            ->will( $this->returnValue( $abstain ) );
        $mocks['primary2']->expects( $this->never() )->method( 'continuePrimaryAccountLink' );
        $mocks['primary3']->expects( $this->any() )->method( 'accountCreationType' )
            ->will( $this->returnValue( PrimaryAuthenticationProvider::TYPE_CREATE ) );
        $mocks['primary3']->expects( $this->never() )->method( 'beginPrimaryAccountLink' );
        $mocks['primary3']->expects( $this->never() )->method( 'continuePrimaryAccountLink' );

        $this->preauthMocks = [ $mocks['pre'], $mocks['pre2'] ];
        $this->primaryauthMocks = [ $mocks['primary3'], $mocks['primary2'], $mocks['primary'] ];
        $this->logger = new \TestLogger( true, function ( $message, $level ) {
            return $level === LogLevel::DEBUG ? null : $message;
        } );
        $this->initializeManager( true );

        $constraint = \PHPUnit_Framework_Assert::logicalOr(
            $this->equalTo( AuthenticationResponse::PASS ),
            $this->equalTo( AuthenticationResponse::FAIL )
        );
        $providers = array_merge( $this->preauthMocks, $this->primaryauthMocks );
        foreach ( $providers as $p ) {
            $p->postCalled = false;
            $p->expects( $this->atMost( 1 ) )->method( 'postAccountLink' )
                ->willReturnCallback( function ( $user, $response ) use ( $constraint, $p ) {
                    $this->assertInstanceOf( 'User', $user );
                    $this->assertSame( 'UTSysop', $user->getName() );
                    $this->assertInstanceOf( AuthenticationResponse::class, $response );
                    $this->assertThat( $response->status, $constraint );
                    $p->postCalled = $response->status;
                } );
        }

        $first = true;
        $created = false;
        $expectLog = [];
        foreach ( $managerResponses as $i => $response ) {
            if ( $response instanceof AuthenticationResponse &&
                $response->status === AuthenticationResponse::PASS
            ) {
                $expectLog[] = [ LogLevel::INFO, 'Account linked to {user} by primary' ];
            }

            $ex = null;
            try {
                if ( $first ) {
                    $ret = $this->manager->beginAccountLink( $user, [ $req ], 'http://localhost/' );
                } else {
                    $ret = $this->manager->continueAccountLink( [ $req ] );
                }
                if ( $response instanceof \Exception ) {
                    $this->fail( 'Expected exception not thrown', "Response $i" );
                }
            } catch ( \Exception $ex ) {
                if ( !$response instanceof \Exception ) {
                    throw $ex;
                }
                $this->assertEquals( $response->getMessage(), $ex->getMessage(), "Response $i, exception" );
                $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ),
                    "Response $i, exception, session state" );
                return;
            }

            $this->assertSame( 'http://localhost/', $req->returnToUrl );

            $ret->message = $this->message( $ret->message );
            $this->assertEquals( $response, $ret, "Response $i, response" );
            if ( $response->status === AuthenticationResponse::PASS ||
                $response->status === AuthenticationResponse::FAIL
            ) {
                $this->assertNull( $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ),
                    "Response $i, session state" );
                foreach ( $providers as $p ) {
                    $this->assertSame( $response->status, $p->postCalled,
                        "Response $i, post-auth callback called" );
                }
            } else {
                $this->assertNotNull(
                    $this->request->getSession()->getSecret( 'AuthManager::accountLinkState' ),
                    "Response $i, session state"
                );
                foreach ( $ret->neededRequests as $neededReq ) {
                    $this->assertEquals( AuthManager::ACTION_LINK, $neededReq->action,
                        "Response $i, neededRequest action" );
                }
                $this->assertEquals(
                    $ret->neededRequests,
                    $this->manager->getAuthenticationRequests( AuthManager::ACTION_LINK_CONTINUE ),
                    "Response $i, continuation check"
                );
                foreach ( $providers as $p ) {
                    $this->assertFalse( $p->postCalled, "Response $i, post-auth callback not called" );
                }
            }

            $first = false;
        }

        $this->assertSame( $expectLog, $this->logger->getBuffer() );
    }

    public function provideAccountLink() {
        $req = $this->getMockForAbstractClass( AuthenticationRequest::class );
        $good = StatusValue::newGood();

        return [
            'Pre-link test fail in pre' => [
                StatusValue::newFatal( 'fail-from-pre' ),
                [],
                [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-pre' ) ),
                ]
            ],
            'Failure in primary' => [
                $good,
                $tmp = [
                    AuthenticationResponse::newFail( $this->message( 'fail-from-primary' ) ),
                ],
                $tmp
            ],
            'All primary abstain' => [
                $good,
                [
                    AuthenticationResponse::newAbstain(),
                ],
                [
                    AuthenticationResponse::newFail( $this->message( 'authmanager-link-no-primary' ) )
                ]
            ],
            'Primary UI, then redirect, then fail' => [
                $good,
                $tmp = [
                    AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newRedirect( [ $req ], '/foo.html', [ 'foo' => 'bar' ] ),
                    AuthenticationResponse::newFail( $this->message( 'fail-in-primary-continue' ) ),
                ],
                $tmp
            ],
            'Primary redirect, then abstain' => [
                $good,
                [
                    $tmp = AuthenticationResponse::newRedirect(
                        [ $req ], '/foo.html', [ 'foo' => 'bar' ]
                    ),
                    AuthenticationResponse::newAbstain(),
                ],
                [
                    $tmp,
                    new \DomainException(
                        'MockPrimaryAuthenticationProvider::continuePrimaryAccountLink() returned ABSTAIN'
                    )
                ]
            ],
            'Primary UI, then pass' => [
                $good,
                [
                    $tmp1 = AuthenticationResponse::newUI( [ $req ], $this->message( '...' ) ),
                    AuthenticationResponse::newPass(),
                ],
                [
                    $tmp1,
                    AuthenticationResponse::newPass( '' ),
                ]
            ],
            'Primary pass' => [
                $good,
                [
                    AuthenticationResponse::newPass( '' ),
                ],
                [
                    AuthenticationResponse::newPass( '' ),
                ]
            ],
        ];
    }
}