TemporaryPasswordPrimaryAuthenticationProviderTest.php

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<?php

namespace MediaWiki\Auth;

class TemporaryPasswordPrimaryAuthenticationProviderTest extends \MediaWikiTestCase {

    private $manager = null;
    private $config = null;
    private $validity = null;

    protected function getProvider( $params = [] ) {
        if ( !$this->config ) {
            $this->config = new \HashConfig( [
                'EmailEnabled' => true,
            ] );
        }
        $config = new \MultiConfig( [
            $this->config,
            \ConfigFactory::getDefaultInstance()->makeConfig( 'main' )
        ] );

        if ( !$this->manager ) {
            $this->manager = new AuthManager( new \FauxRequest(), $config );
        }
        $this->validity = \Status::newGood();

        $mockedMethods[] = 'checkPasswordValidity';
        $provider = $this->getMock(
            TemporaryPasswordPrimaryAuthenticationProvider::class,
            $mockedMethods,
            [ $params ]
        );
        $provider->expects( $this->any() )->method( 'checkPasswordValidity' )
            ->will( $this->returnCallback( function () {
                return $this->validity;
            } ) );
        $provider->setConfig( $config );
        $provider->setLogger( new \Psr\Log\NullLogger() );
        $provider->setManager( $this->manager );

        return $provider;
    }

    protected function hookMailer( $func = null ) {
        \Hooks::clear( 'AlternateUserMailer' );
        if ( $func ) {
            \Hooks::register( 'AlternateUserMailer', $func );
            // Safety
            \Hooks::register( 'AlternateUserMailer', function () {
                return false;
            } );
        } else {
            \Hooks::register( 'AlternateUserMailer', function () {
                $this->fail( 'AlternateUserMailer hook called unexpectedly' );
                return false;
            } );
        }

        return new \ScopedCallback( function () {
            \Hooks::clear( 'AlternateUserMailer' );
            \Hooks::register( 'AlternateUserMailer', function () {
                return false;
            } );
        } );
    }

    public function testBasics() {
        $provider = new TemporaryPasswordPrimaryAuthenticationProvider();

        $this->assertSame(
            PrimaryAuthenticationProvider::TYPE_CREATE,
            $provider->accountCreationType()
        );

        $this->assertTrue( $provider->testUserExists( 'UTSysop' ) );
        $this->assertTrue( $provider->testUserExists( 'uTSysop' ) );
        $this->assertFalse( $provider->testUserExists( 'DoesNotExist' ) );
        $this->assertFalse( $provider->testUserExists( '<invalid>' ) );

        $req = new PasswordAuthenticationRequest;
        $req->action = AuthManager::ACTION_CHANGE;
        $req->username = '<invalid>';
        $provider->providerChangeAuthenticationData( $req );
    }

    public function testConfig() {
        $config = new \HashConfig( [
            'EnableEmail' => false,
            'NewPasswordExpiry' => 100,
            'PasswordReminderResendTime' => 101,
        ] );

        $p = \TestingAccessWrapper::newFromObject( new TemporaryPasswordPrimaryAuthenticationProvider() );
        $p->setConfig( $config );
        $this->assertSame( false, $p->emailEnabled );
        $this->assertSame( 100, $p->newPasswordExpiry );
        $this->assertSame( 101, $p->passwordReminderResendTime );

        $p = \TestingAccessWrapper::newFromObject( new TemporaryPasswordPrimaryAuthenticationProvider( [
            'emailEnabled' => true,
            'newPasswordExpiry' => 42,
            'passwordReminderResendTime' => 43,
        ] ) );
        $p->setConfig( $config );
        $this->assertSame( true, $p->emailEnabled );
        $this->assertSame( 42, $p->newPasswordExpiry );
        $this->assertSame( 43, $p->passwordReminderResendTime );
    }

    public function testTestUserCanAuthenticate() {
        $dbw = wfGetDB( DB_MASTER );

        $passwordFactory = new \PasswordFactory();
        $passwordFactory->init( \RequestContext::getMain()->getConfig() );
        // A is unsalted MD5 (thus fast) ... we don't care about security here, this is test only
        $passwordFactory->setDefaultType( 'A' );
        $pwhash = $passwordFactory->newFromPlaintext( 'password' )->toString();

        $provider = $this->getProvider();
        $providerPriv = \TestingAccessWrapper::newFromObject( $provider );

        $this->assertFalse( $provider->testUserCanAuthenticate( '<invalid>' ) );
        $this->assertFalse( $provider->testUserCanAuthenticate( 'DoesNotExist' ) );

        $dbw->update(
            'user',
            [
                'user_newpassword' => \PasswordFactory::newInvalidPassword()->toString(),
                'user_newpass_time' => null,
            ],
            [ 'user_name' => 'UTSysop' ]
        );
        $this->assertFalse( $provider->testUserCanAuthenticate( 'UTSysop' ) );

        $dbw->update(
            'user',
            [
                'user_newpassword' => $pwhash,
                'user_newpass_time' => null,
            ],
            [ 'user_name' => 'UTSysop' ]
        );
        $this->assertTrue( $provider->testUserCanAuthenticate( 'UTSysop' ) );
        $this->assertTrue( $provider->testUserCanAuthenticate( 'uTSysop' ) );

        $dbw->update(
            'user',
            [
                'user_newpassword' => $pwhash,
                'user_newpass_time' => $dbw->timestamp( time() - 10 ),
            ],
            [ 'user_name' => 'UTSysop' ]
        );
        $providerPriv->newPasswordExpiry = 100;
        $this->assertTrue( $provider->testUserCanAuthenticate( 'UTSysop' ) );
        $providerPriv->newPasswordExpiry = 1;
        $this->assertFalse( $provider->testUserCanAuthenticate( 'UTSysop' ) );

        $dbw->update(
            'user',
            [
                'user_newpassword' => \PasswordFactory::newInvalidPassword()->toString(),
                'user_newpass_time' => null,
            ],
            [ 'user_name' => 'UTSysop' ]
        );
    }

    public function testGetAuthenticationRequests( $action, $options, $expected ) {
        $actual = $this->getProvider()->getAuthenticationRequests( $action, $options );
        foreach ( $actual as $req ) {
            if ( $req instanceof TemporaryPasswordAuthenticationRequest && $req->password !== null ) {
                $req->password = 'random';
            }
        }
        $this->assertEquals( $expected, $actual );
    }

    public static function provideGetAuthenticationRequests() {
        $anon = [ 'username' => null ];
        $loggedIn = [ 'username' => 'UTSysop' ];

        return [
            [ AuthManager::ACTION_LOGIN, $anon, [
                new PasswordAuthenticationRequest
            ] ],
            [ AuthManager::ACTION_LOGIN, $loggedIn, [
                new PasswordAuthenticationRequest
            ] ],
            [ AuthManager::ACTION_CREATE, $anon, [] ],
            [ AuthManager::ACTION_CREATE, $loggedIn, [
                new TemporaryPasswordAuthenticationRequest( 'random' )
            ] ],
            [ AuthManager::ACTION_LINK, $anon, [] ],
            [ AuthManager::ACTION_LINK, $loggedIn, [] ],
            [ AuthManager::ACTION_CHANGE, $anon, [
                new TemporaryPasswordAuthenticationRequest( 'random' )
            ] ],
            [ AuthManager::ACTION_CHANGE, $loggedIn, [
                new TemporaryPasswordAuthenticationRequest( 'random' )
            ] ],
            [ AuthManager::ACTION_REMOVE, $anon, [
                new TemporaryPasswordAuthenticationRequest
            ] ],
            [ AuthManager::ACTION_REMOVE, $loggedIn, [
                new TemporaryPasswordAuthenticationRequest
            ] ],
        ];
    }

    public function testAuthentication() {
        $password = 'TemporaryPassword';
        $hash = ':A:' . md5( $password );
        $dbw = wfGetDB( DB_MASTER );
        $dbw->update(
            'user',
            [ 'user_newpassword' => $hash, 'user_newpass_time' => $dbw->timestamp( time() - 10 ) ],
            [ 'user_name' => 'UTSysop' ]
        );

        $req = new PasswordAuthenticationRequest();
        $req->action = AuthManager::ACTION_LOGIN;
        $reqs = [ PasswordAuthenticationRequest::class => $req ];

        $provider = $this->getProvider();
        $providerPriv = \TestingAccessWrapper::newFromObject( $provider );

        $providerPriv->newPasswordExpiry = 100;

        // General failures
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAuthentication( [] )
        );

        $req->username = 'foo';
        $req->password = null;
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAuthentication( $reqs )
        );

        $req->username = null;
        $req->password = 'bar';
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAuthentication( $reqs )
        );

        $req->username = '<invalid>';
        $req->password = 'WhoCares';
        $ret = $provider->beginPrimaryAuthentication( $reqs );
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAuthentication( $reqs )
        );

        $req->username = 'DoesNotExist';
        $req->password = 'DoesNotExist';
        $ret = $provider->beginPrimaryAuthentication( $reqs );
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAuthentication( $reqs )
        );

        // Validation failure
        $req->username = 'UTSysop';
        $req->password = $password;
        $this->validity = \Status::newFatal( 'arbitrary-failure' );
        $ret = $provider->beginPrimaryAuthentication( $reqs );
        $this->assertEquals(
            AuthenticationResponse::FAIL,
            $ret->status
        );
        $this->assertEquals(
            'arbitrary-failure',
            $ret->message->getKey()
        );

        // Successful auth
        $this->manager->removeAuthenticationSessionData( null );
        $this->validity = \Status::newGood();
        $this->assertEquals(
            AuthenticationResponse::newPass( 'UTSysop' ),
            $provider->beginPrimaryAuthentication( $reqs )
        );
        $this->assertNotNull( $this->manager->getAuthenticationSessionData( 'reset-pass' ) );

        $this->manager->removeAuthenticationSessionData( null );
        $this->validity = \Status::newGood();
        $req->username = 'uTSysop';
        $this->assertEquals(
            AuthenticationResponse::newPass( 'UTSysop' ),
            $provider->beginPrimaryAuthentication( $reqs )
        );
        $this->assertNotNull( $this->manager->getAuthenticationSessionData( 'reset-pass' ) );
        $req->username = 'UTSysop';

        // Expired password
        $providerPriv->newPasswordExpiry = 1;
        $ret = $provider->beginPrimaryAuthentication( $reqs );
        $this->assertEquals(
            AuthenticationResponse::FAIL,
            $ret->status
        );
        $this->assertEquals(
            'wrongpassword',
            $ret->message->getKey()
        );

        // Bad password
        $providerPriv->newPasswordExpiry = 100;
        $this->validity = \Status::newGood();
        $req->password = 'Wrong';
        $ret = $provider->beginPrimaryAuthentication( $reqs );
        $this->assertEquals(
            AuthenticationResponse::FAIL,
            $ret->status
        );
        $this->assertEquals(
            'wrongpassword',
            $ret->message->getKey()
        );

    }

    public function testProviderAllowsAuthenticationDataChange( $type, $user, \Status $validity,
        \StatusValue $expect1, \StatusValue $expect2
    ) {
        if ( $type === PasswordAuthenticationRequest::class ||
            $type === TemporaryPasswordAuthenticationRequest::class
        ) {
            $req = new $type();
        } else {
            $req = $this->getMock( $type );
        }
        $req->action = AuthManager::ACTION_CHANGE;
        $req->username = $user;
        $req->password = 'NewPassword';

        $provider = $this->getProvider();
        $this->validity = $validity;
        $this->assertEquals( $expect1, $provider->providerAllowsAuthenticationDataChange( $req, false ) );
        $this->assertEquals( $expect2, $provider->providerAllowsAuthenticationDataChange( $req, true ) );
    }

    public static function provideProviderAllowsAuthenticationDataChange() {
        $err = \StatusValue::newGood();
        $err->error( 'arbitrary-warning' );

        return [
            [ AuthenticationRequest::class, 'UTSysop', \Status::newGood(),
                \StatusValue::newGood( 'ignored' ), \StatusValue::newGood( 'ignored' ) ],
            [ PasswordAuthenticationRequest::class, 'UTSysop', \Status::newGood(),
                \StatusValue::newGood( 'ignored' ), \StatusValue::newGood( 'ignored' ) ],
            [ TemporaryPasswordAuthenticationRequest::class, 'UTSysop', \Status::newGood(),
                \StatusValue::newGood(), \StatusValue::newGood() ],
            [ TemporaryPasswordAuthenticationRequest::class, 'uTSysop', \Status::newGood(),
                \StatusValue::newGood(), \StatusValue::newGood() ],
            [ TemporaryPasswordAuthenticationRequest::class, 'UTSysop', \Status::wrap( $err ),
                \StatusValue::newGood(), $err ],
            [ TemporaryPasswordAuthenticationRequest::class, 'UTSysop',
                \Status::newFatal( 'arbitrary-error' ), \StatusValue::newGood(),
                \StatusValue::newFatal( 'arbitrary-error' ) ],
            [ TemporaryPasswordAuthenticationRequest::class, 'DoesNotExist', \Status::newGood(),
                \StatusValue::newGood(), \StatusValue::newGood( 'ignored' ) ],
            [ TemporaryPasswordAuthenticationRequest::class, '<invalid>', \Status::newGood(),
                \StatusValue::newGood(), \StatusValue::newGood( 'ignored' ) ],
        ];
    }

    public function testProviderChangeAuthenticationData( $user, $type, $changed ) {
        $cuser = ucfirst( $user );
        $oldpass = 'OldTempPassword';
        $newpass = 'NewTempPassword';

        $hash = ':A:' . md5( $oldpass );
        $dbw = wfGetDB( DB_MASTER );
        $dbw->update(
            'user',
            [ 'user_newpassword' => $hash, 'user_newpass_time' => $dbw->timestamp( time() + 10 ) ],
            [ 'user_name' => 'UTSysop' ]
        );

        $dbw = wfGetDB( DB_MASTER );
        $oldHash = $dbw->selectField( 'user', 'user_newpassword', [ 'user_name' => $cuser ] );
        $cb = new \ScopedCallback( function () use ( $dbw, $cuser, $oldHash ) {
            $dbw->update( 'user', [ 'user_newpassword' => $oldHash ], [ 'user_name' => $cuser ] );
        } );

        $provider = $this->getProvider();

        // Sanity check
        $loginReq = new PasswordAuthenticationRequest();
        $loginReq->action = AuthManager::ACTION_CHANGE;
        $loginReq->username = $user;
        $loginReq->password = $oldpass;
        $loginReqs = [ PasswordAuthenticationRequest::class => $loginReq ];
        $this->assertEquals(
            AuthenticationResponse::newPass( $cuser ),
            $provider->beginPrimaryAuthentication( $loginReqs ),
            'Sanity check'
        );

        if ( $type === PasswordAuthenticationRequest::class ||
            $type === TemporaryPasswordAuthenticationRequest::class
        ) {
            $changeReq = new $type();
        } else {
            $changeReq = $this->getMock( $type );
        }
        $changeReq->action = AuthManager::ACTION_CHANGE;
        $changeReq->username = $user;
        $changeReq->password = $newpass;
        $resetMailer = $this->hookMailer();
        $provider->providerChangeAuthenticationData( $changeReq );
        \ScopedCallback::consume( $resetMailer );

        $loginReq->password = $oldpass;
        $ret = $provider->beginPrimaryAuthentication( $loginReqs );
        $this->assertEquals(
            AuthenticationResponse::FAIL,
            $ret->status,
            'old password should fail'
        );
        $this->assertEquals(
            'wrongpassword',
            $ret->message->getKey(),
            'old password should fail'
        );

        $loginReq->password = $newpass;
        $ret = $provider->beginPrimaryAuthentication( $loginReqs );
        if ( $changed ) {
            $this->assertEquals(
                AuthenticationResponse::newPass( $cuser ),
                $ret,
                'new password should pass'
            );
            $this->assertNotNull(
                $dbw->selectField( 'user', 'user_newpass_time', [ 'user_name' => $cuser ] )
            );
        } else {
            $this->assertEquals(
                AuthenticationResponse::FAIL,
                $ret->status,
                'new password should fail'
            );
            $this->assertEquals(
                'wrongpassword',
                $ret->message->getKey(),
                'new password should fail'
            );
            $this->assertNull(
                $dbw->selectField( 'user', 'user_newpass_time', [ 'user_name' => $cuser ] )
            );
        }
    }

    public static function provideProviderChangeAuthenticationData() {
        return [
            [ 'UTSysop', AuthenticationRequest::class, false ],
            [ 'UTSysop', PasswordAuthenticationRequest::class, false ],
            [ 'UTSysop', TemporaryPasswordAuthenticationRequest::class, true ],
        ];
    }

    public function testProviderChangeAuthenticationDataEmail() {
        $dbw = wfGetDB( DB_MASTER );
        $dbw->update(
            'user',
            [ 'user_newpass_time' => $dbw->timestamp( time() - 5 * 3600 ) ],
            [ 'user_name' => 'UTSysop' ]
        );

        $user = \User::newFromName( 'UTSysop' );
        $reset = new \ScopedCallback( function ( $email ) use ( $user ) {
            $user->setEmail( $email );
            $user->saveSettings();
        }, [ $user->getEmail() ] );

        $user->setEmail( 'test@localhost.localdomain' );
        $user->saveSettings();

        $req = TemporaryPasswordAuthenticationRequest::newRandom();
        $req->username = $user->getName();
        $req->mailpassword = true;

        $provider = $this->getProvider( [ 'emailEnabled' => false ] );
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newFatal( 'passwordreset-emaildisabled' ), $status );
        $req->hasBackchannel = true;
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertFalse( $status->hasMessage( 'passwordreset-emaildisabled' ) );
        $req->hasBackchannel = false;

        $provider = $this->getProvider( [ 'passwordReminderResendTime' => 10 ] );
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newFatal( 'throttled-mailpassword', 10 ), $status );

        $provider = $this->getProvider( [ 'passwordReminderResendTime' => 3 ] );
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertFalse( $status->hasMessage( 'throttled-mailpassword' ) );

        $dbw->update(
            'user',
            [ 'user_newpass_time' => $dbw->timestamp( time() + 5 * 3600 ) ],
            [ 'user_name' => 'UTSysop' ]
        );
        $provider = $this->getProvider( [ 'passwordReminderResendTime' => 0 ] );
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertFalse( $status->hasMessage( 'throttled-mailpassword' ) );

        $req->caller = null;
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newFatal( 'passwordreset-nocaller' ), $status );

        $req->caller = '127.0.0.256';
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newFatal( 'passwordreset-nosuchcaller', '127.0.0.256' ),
            $status );

        $req->caller = '<Invalid>';
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newFatal( 'passwordreset-nosuchcaller', '<Invalid>' ),
            $status );

        $req->caller = '127.0.0.1';
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newGood(), $status );

        $req->caller = 'UTSysop';
        $status = $provider->providerAllowsAuthenticationDataChange( $req, true );
        $this->assertEquals( \StatusValue::newGood(), $status );

        $mailed = false;
        $resetMailer = $this->hookMailer( function ( $headers, $to, $from, $subject, $body )
            use ( &$mailed, $req )
        {
            $mailed = true;
            $this->assertSame( 'test@localhost.localdomain', $to[0]->address );
            $this->assertContains( $req->password, $body );
            return false;
        } );
        $provider->providerChangeAuthenticationData( $req );
        \ScopedCallback::consume( $resetMailer );
        $this->assertTrue( $mailed );

        $priv = \TestingAccessWrapper::newFromObject( $provider );
        $req->username = '<invalid>';
        $status = $priv->sendPasswordResetEmail( $req );
        $this->assertEquals( \Status::newFatal( 'noname' ), $status );
    }

    public function testTestForAccountCreation() {
        $user = \User::newFromName( 'foo' );
        $req = new TemporaryPasswordAuthenticationRequest();
        $req->username = 'Foo';
        $req->password = 'Bar';
        $reqs = [ TemporaryPasswordAuthenticationRequest::class => $req ];

        $provider = $this->getProvider();
        $this->assertEquals(
            \StatusValue::newGood(),
            $provider->testForAccountCreation( $user, $user, [] ),
            'No password request'
        );

        $this->assertEquals(
            \StatusValue::newGood(),
            $provider->testForAccountCreation( $user, $user, $reqs ),
            'Password request, validated'
        );

        $this->validity->error( 'arbitrary warning' );
        $expect = \StatusValue::newGood();
        $expect->error( 'arbitrary warning' );
        $this->assertEquals(
            $expect,
            $provider->testForAccountCreation( $user, $user, $reqs ),
            'Password request, not validated'
        );
    }

    public function testAccountCreation() {
        $resetMailer = $this->hookMailer();

        $user = \User::newFromName( 'Foo' );

        $req = new TemporaryPasswordAuthenticationRequest();
        $reqs = [ TemporaryPasswordAuthenticationRequest::class => $req ];

        $authreq = new PasswordAuthenticationRequest();
        $authreq->action = AuthManager::ACTION_CREATE;
        $authreqs = [ PasswordAuthenticationRequest::class => $authreq ];

        $provider = $this->getProvider();

        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAccountCreation( $user, $user, [] )
        );

        $req->username = 'foo';
        $req->password = null;
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAccountCreation( $user, $user, $reqs )
        );

        $req->username = null;
        $req->password = 'bar';
        $this->assertEquals(
            AuthenticationResponse::newAbstain(),
            $provider->beginPrimaryAccountCreation( $user, $user, $reqs )
        );

        $req->username = 'foo';
        $req->password = 'bar';

        $expect = AuthenticationResponse::newPass( 'Foo' );
        $expect->createRequest = clone( $req );
        $expect->createRequest->username = 'Foo';
        $this->assertEquals( $expect, $provider->beginPrimaryAccountCreation( $user, $user, $reqs ) );
        $this->assertNull( $this->manager->getAuthenticationSessionData( 'no-email' ) );

        // We have to cheat a bit to avoid having to add a new user to
        // the database to test the actual setting of the password works right
        $user = \User::newFromName( 'UTSysop' );
        $req->username = $authreq->username = $user->getName();
        $req->password = $authreq->password = 'NewPassword';
        $expect = AuthenticationResponse::newPass( 'UTSysop' );
        $expect->createRequest = $req;

        $res2 = $provider->beginPrimaryAccountCreation( $user, $user, $reqs );
        $this->assertEquals( $expect, $res2, 'Sanity check' );

        $ret = $provider->beginPrimaryAuthentication( $authreqs );
        $this->assertEquals( AuthenticationResponse::FAIL, $ret->status, 'sanity check' );

        $this->assertSame( null, $provider->finishAccountCreation( $user, $user, $res2 ) );

        $ret = $provider->beginPrimaryAuthentication( $authreqs );
        $this->assertEquals( AuthenticationResponse::PASS, $ret->status, 'new password is set' );
    }

    public function testAccountCreationEmail() {
        $creator = \User::newFromName( 'Foo' );
        $user = \User::newFromName( 'UTSysop' );
        $reset = new \ScopedCallback( function ( $email ) use ( $user ) {
            $user->setEmail( $email );
            $user->saveSettings();
        }, [ $user->getEmail() ] );

        $user->setEmail( null );

        $req = TemporaryPasswordAuthenticationRequest::newRandom();
        $req->username = $user->getName();
        $req->mailpassword = true;

        $provider = $this->getProvider( [ 'emailEnabled' => false ] );
        $status = $provider->testForAccountCreation( $user, $creator, [ $req ] );
        $this->assertEquals( \StatusValue::newFatal( 'emaildisabled' ), $status );
        $req->hasBackchannel = true;
        $status = $provider->testForAccountCreation( $user, $creator, [ $req ] );
        $this->assertFalse( $status->hasMessage( 'emaildisabled' ) );
        $req->hasBackchannel = false;

        $provider = $this->getProvider( [ 'emailEnabled' => true ] );
        $status = $provider->testForAccountCreation( $user, $creator, [ $req ] );
        $this->assertEquals( \StatusValue::newFatal( 'noemailcreate' ), $status );
        $req->hasBackchannel = true;
        $status = $provider->testForAccountCreation( $user, $creator, [ $req ] );
        $this->assertFalse( $status->hasMessage( 'noemailcreate' ) );
        $req->hasBackchannel = false;

        $user->setEmail( 'test@localhost.localdomain' );
        $status = $provider->testForAccountCreation( $user, $creator, [ $req ] );
        $this->assertEquals( \StatusValue::newGood(), $status );

        $mailed = false;
        $resetMailer = $this->hookMailer( function ( $headers, $to, $from, $subject, $body )
            use ( &$mailed, $req )
        {
            $mailed = true;
            $this->assertSame( 'test@localhost.localdomain', $to[0]->address );
            $this->assertContains( $req->password, $body );
            return false;
        } );

        $expect = AuthenticationResponse::newPass( 'UTSysop' );
        $expect->createRequest = clone( $req );
        $expect->createRequest->username = 'UTSysop';
        $res = $provider->beginPrimaryAccountCreation( $user, $creator, [ $req ] );
        $this->assertEquals( $expect, $res );
        $this->assertTrue( $this->manager->getAuthenticationSessionData( 'no-email' ) );
        $this->assertFalse( $mailed );

        $this->assertSame( 'byemail', $provider->finishAccountCreation( $user, $creator, $res ) );
        $this->assertTrue( $mailed );

        \ScopedCallback::consume( $resetMailer );
        $this->assertTrue( $mailed );
    }

}