ApiMainTest.php

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<?php
 
use Wikimedia\TestingAccessWrapper;
 
class ApiMainTest extends ApiTestCase {
 
    public function testApi() {
        $api = new ApiMain(
            new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] )
        );
        $api->execute();
        $data = $api->getResult()->getResultData();
        $this->assertInternalType( 'array', $data );
        $this->assertArrayHasKey( 'query', $data );
    }
 
    public function testApiNoParam() {
        $api = new ApiMain();
        $api->execute();
        $data = $api->getResult()->getResultData();
        $this->assertInternalType( 'array', $data );
    }
 
    private function getNonInternalApiMain( array $requestData, array $headers = [] ) {
        $req = $this->getMockBuilder( WebRequest::class )
            ->setMethods( [ 'response', 'getRawIP' ] )
            ->getMock();
        $response = new FauxResponse();
        $req->method( 'response' )->willReturn( $response );
        $req->method( 'getRawIP' )->willReturn( '127.0.0.1' );
 
        $wrapper = TestingAccessWrapper::newFromObject( $req );
        $wrapper->data = $requestData;
        if ( $headers ) {
            $wrapper->headers = $headers;
        }
 
        return new ApiMain( $req );
    }
 
    public function testUselang() {
        global $wgLang;
 
        $api = $this->getNonInternalApiMain( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'uselang' => 'fr',
        ] );
 
        ob_start();
        $api->execute();
        ob_end_clean();
 
        $this->assertSame( 'fr', $wgLang->getCode() );
    }
 
    public function testNonWhitelistedCorsWithCookies() {
        $logFile = $this->getNewTempFile();
 
        $this->mergeMwGlobalArrayValue( '_COOKIE', [ 'forceHTTPS' => '1' ] );
        $logger = new TestLogger( true );
        $this->setLogger( 'cors', $logger );
 
        $api = $this->getNonInternalApiMain( [
            'action' => 'query',
            'meta' => 'siteinfo',
        // For some reason multiple origins (which are not allowed in the
        // WHATWG Fetch spec that supersedes the RFC) are always considered to
        // be problematic.
        ], [ 'ORIGIN' => 'https://www.example.com https://www.com.example' ] );
 
        $this->assertSame(
            [ [ Psr\Log\LogLevel::WARNING, 'Non-whitelisted CORS request with session cookies' ] ],
            $logger->getBuffer()
        );
    }
 
    public function testSuppressedLogin() {
        global $wgUser;
        $origUser = $wgUser;
 
        $api = $this->getNonInternalApiMain( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'origin' => '*',
        ] );
 
        ob_start();
        $api->execute();
        ob_end_clean();
 
        $this->assertNotSame( $origUser, $wgUser );
        $this->assertSame( 'true', $api->getContext()->getRequest()->response()
            ->getHeader( 'MediaWiki-Login-Suppressed' ) );
    }
 
    public function testSetContinuationManager() {
        $api = new ApiMain();
        $manager = $this->createMock( ApiContinuationManager::class );
        $api->setContinuationManager( $manager );
        $this->assertTrue( true, 'No exception' );
        return [ $api, $manager ];
    }
 
    public function testSetContinuationManagerTwice( $args ) {
        $this->setExpectedException( UnexpectedValueException::class,
            'ApiMain::setContinuationManager: tried to set manager from  ' .
            'when a manager is already set from ' );
 
        list( $api, $manager ) = $args;
        $api->setContinuationManager( $manager );
    }
 
    public function testSetCacheModeUnrecognized() {
        $api = new ApiMain();
        $api->setCacheMode( 'unrecognized' );
        $this->assertSame(
            'private',
            TestingAccessWrapper::newFromObject( $api )->mCacheMode,
            'Unrecognized params must be silently ignored'
        );
    }
 
    public function testSetCacheModePrivateWiki() {
        $this->setGroupPermissions( '*', 'read', false );
 
        $wrappedApi = TestingAccessWrapper::newFromObject( new ApiMain() );
        $wrappedApi->setCacheMode( 'public' );
        $this->assertSame( 'private', $wrappedApi->mCacheMode );
        $wrappedApi->setCacheMode( 'anon-public-user-private' );
        $this->assertSame( 'private', $wrappedApi->mCacheMode );
    }
 
    public function testAddRequestedFieldsRequestId() {
        $req = new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'requestid' => '123456',
        ] );
        $api = new ApiMain( $req );
        $api->execute();
        $this->assertSame( '123456', $api->getResult()->getResultData()['requestid'] );
    }
 
    public function testAddRequestedFieldsCurTimestamp() {
        $req = new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'curtimestamp' => '',
        ] );
        $api = new ApiMain( $req );
        $api->execute();
        $timestamp = $api->getResult()->getResultData()['curtimestamp'];
        $this->assertLessThanOrEqual( 1, abs( strtotime( $timestamp ) - time() ) );
    }
 
    public function testAddRequestedFieldsResponseLangInfo() {
        $req = new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
            // errorlang is ignored if errorformat is not specified
            'errorformat' => 'plaintext',
            'uselang' => 'FR',
            'errorlang' => 'ja',
            'responselanginfo' => '',
        ] );
        $api = new ApiMain( $req );
        $api->execute();
        $data = $api->getResult()->getResultData();
        $this->assertSame( 'fr', $data['uselang'] );
        $this->assertSame( 'ja', $data['errorlang'] );
    }
 
    public function testSetupModuleUnknown() {
        $this->setExpectedException( ApiUsageException::class,
            'Unrecognized value for parameter "action": unknownaction.' );
 
        $req = new FauxRequest( [ 'action' => 'unknownaction' ] );
        $api = new ApiMain( $req );
        $api->execute();
    }
 
    public function testSetupModuleNoTokenProvided() {
        $this->setExpectedException( ApiUsageException::class,
            'The "token" parameter must be set.' );
 
        $req = new FauxRequest( [
            'action' => 'edit',
            'title' => 'New page',
            'text' => 'Some text',
        ] );
        $api = new ApiMain( $req );
        $api->execute();
    }
 
    public function testSetupModuleInvalidTokenProvided() {
        $this->setExpectedException( ApiUsageException::class, 'Invalid CSRF token.' );
 
        $req = new FauxRequest( [
            'action' => 'edit',
            'title' => 'New page',
            'text' => 'Some text',
            'token' => "This isn't a real token!",
        ] );
        $api = new ApiMain( $req );
        $api->execute();
    }
 
    public function testSetupModuleNeedsTokenTrue() {
        $this->setExpectedException( MWException::class,
            "Module 'testmodule' must be updated for the new token handling. " .
            "See documentation for ApiBase::needsToken for details." );
 
        $mock = $this->createMock( ApiBase::class );
        $mock->method( 'getModuleName' )->willReturn( 'testmodule' );
        $mock->method( 'needsToken' )->willReturn( true );
 
        $api = new ApiMain( new FauxRequest( [ 'action' => 'testmodule' ] ) );
        $api->getModuleManager()->addModule( 'testmodule', 'action', get_class( $mock ),
            function () use ( $mock ) {
                return $mock;
            }
        );
        $api->execute();
    }
 
    public function testSetupModuleNeedsTokenNeedntBePosted() {
        $this->setExpectedException( MWException::class,
            "Module 'testmodule' must require POST to use tokens." );
 
        $mock = $this->createMock( ApiBase::class );
        $mock->method( 'getModuleName' )->willReturn( 'testmodule' );
        $mock->method( 'needsToken' )->willReturn( 'csrf' );
        $mock->method( 'mustBePosted' )->willReturn( false );
 
        $api = new ApiMain( new FauxRequest( [ 'action' => 'testmodule' ] ) );
        $api->getModuleManager()->addModule( 'testmodule', 'action', get_class( $mock ),
            function () use ( $mock ) {
                return $mock;
            }
        );
        $api->execute();
    }
 
    public function testCheckMaxLagFailed() {
        // It's hard to mock the LoadBalancer properly, so instead we'll mock
        // checkMaxLag (which is tested directly in other tests below).
        $req = new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
        ] );
 
        $mock = $this->getMockBuilder( ApiMain::class )
            ->setConstructorArgs( [ $req ] )
            ->setMethods( [ 'checkMaxLag' ] )
            ->getMock();
        $mock->method( 'checkMaxLag' )->willReturn( false );
 
        $mock->execute();
 
        $this->assertArrayNotHasKey( 'query', $mock->getResult()->getResultData() );
    }
 
    public function testCheckConditionalRequestHeadersFailed() {
        // The detailed checking of all cases of checkConditionalRequestHeaders
        // is below in testCheckConditionalRequestHeaders(), which calls the
        // method directly.  Here we just check that it will stop execution if
        // it does fail.
        $now = time();
 
        $this->setMwGlobals( 'wgCacheEpoch', '20030516000000' );
 
        $mock = $this->createMock( ApiBase::class );
        $mock->method( 'getModuleName' )->willReturn( 'testmodule' );
        $mock->method( 'getConditionalRequestData' )
            ->willReturn( wfTimestamp( TS_MW, $now - 3600 ) );
        $mock->expects( $this->exactly( 0 ) )->method( 'execute' );
 
        $req = new FauxRequest( [
            'action' => 'testmodule',
        ] );
        $req->setHeader( 'If-Modified-Since', wfTimestamp( TS_RFC2822, $now - 3600 ) );
        $req->setRequestURL( "http://localhost" );
 
        $api = new ApiMain( $req );
        $api->getModuleManager()->addModule( 'testmodule', 'action', get_class( $mock ),
            function () use ( $mock ) {
                return $mock;
            }
        );
 
        $wrapper = TestingAccessWrapper::newFromObject( $api );
        $wrapper->mInternalMode = false;
 
        ob_start();
        $api->execute();
        ob_end_clean();
    }
 
    private function doTestCheckMaxLag( $lag ) {
        $mockLB = $this->getMockBuilder( LoadBalancer::class )
            ->disableOriginalConstructor()
            ->setMethods( [ 'getMaxLag', '__destruct' ] )
            ->getMock();
        $mockLB->method( 'getMaxLag' )->willReturn( [ 'somehost', $lag ] );
        $this->setService( 'DBLoadBalancer', $mockLB );
 
        $req = new FauxRequest();
 
        $api = new ApiMain( $req );
        $wrapper = TestingAccessWrapper::newFromObject( $api );
 
        $mockModule = $this->createMock( ApiBase::class );
        $mockModule->method( 'shouldCheckMaxLag' )->willReturn( true );
 
        try {
            $wrapper->checkMaxLag( $mockModule, [ 'maxlag' => 3 ] );
        } finally {
            if ( $lag > 3 ) {
                $this->assertSame( '5', $req->response()->getHeader( 'Retry-After' ) );
                $this->assertSame( (string)$lag, $req->response()->getHeader( 'X-Database-Lag' ) );
            }
        }
    }
 
    public function testCheckMaxLagOkay() {
        $this->doTestCheckMaxLag( 3 );
 
        // No exception, we're happy
        $this->assertTrue( true );
    }
 
    public function testCheckMaxLagExceeded() {
        $this->setExpectedException( ApiUsageException::class,
            'Waiting for a database server: 4 seconds lagged.' );
 
        $this->setMwGlobals( 'wgShowHostnames', false );
 
        $this->doTestCheckMaxLag( 4 );
    }
 
    public function testCheckMaxLagExceededWithHostNames() {
        $this->setExpectedException( ApiUsageException::class,
            'Waiting for somehost: 4 seconds lagged.' );
 
        $this->setMwGlobals( 'wgShowHostnames', true );
 
        $this->doTestCheckMaxLag( 4 );
    }
 
    public static function provideAssert() {
        return [
            [ false, [], 'user', 'assertuserfailed' ],
            [ true, [], 'user', false ],
            [ true, [], 'bot', 'assertbotfailed' ],
            [ true, [ 'bot' ], 'user', false ],
            [ true, [ 'bot' ], 'bot', false ],
        ];
    }
 
    public function testAssert( $registered, $rights, $assert, $error ) {
        if ( $registered ) {
            $user = $this->getMutableTestUser()->getUser();
            $user->load(); // load before setting mRights
        } else {
            $user = new User();
        }
        $user->mRights = $rights;
        try {
            $this->doApiRequest( [
                'action' => 'query',
                'assert' => $assert,
            ], null, null, $user );
            $this->assertFalse( $error ); // That no error was expected
        } catch ( ApiUsageException $e ) {
            $this->assertTrue( self::apiExceptionHasCode( $e, $error ),
                "Error '{$e->getMessage()}' matched expected '$error'" );
        }
    }
 
    public function testAssertUser() {
        $user = $this->getTestUser()->getUser();
        $this->doApiRequest( [
            'action' => 'query',
            'assertuser' => $user->getName(),
        ], null, null, $user );
 
        try {
            $this->doApiRequest( [
                'action' => 'query',
                'assertuser' => $user->getName() . 'X',
            ], null, null, $user );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $e ) {
            $this->assertTrue( self::apiExceptionHasCode( $e, 'assertnameduserfailed' ) );
        }
    }
 
    public function testAssertBeforeModule() {
        // Sanity check that the query without assert throws too-many-titles
        try {
            $this->doApiRequest( [
                'action' => 'query',
                'titles' => implode( '|', range( 1, ApiBase::LIMIT_SML1 + 1 ) ),
            ], null, null, new User );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $e ) {
            $this->assertTrue( self::apiExceptionHasCode( $e, 'too-many-titles' ), 'sanity check' );
        }
 
        // Now test that the assert happens first
        try {
            $this->doApiRequest( [
                'action' => 'query',
                'titles' => implode( '|', range( 1, ApiBase::LIMIT_SML1 + 1 ) ),
                'assert' => 'user',
            ], null, null, new User );
            $this->fail( 'Expected exception not thrown' );
        } catch ( ApiUsageException $e ) {
            $this->assertTrue( self::apiExceptionHasCode( $e, 'assertuserfailed' ),
                "Error '{$e->getMessage()}' matched expected 'assertuserfailed'" );
        }
    }
 
    public function testClassNamesInModuleManager() {
        $api = new ApiMain(
            new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] )
        );
        $modules = $api->getModuleManager()->getNamesWithClasses();
 
        foreach ( $modules as $name => $class ) {
            $this->assertTrue(
                class_exists( $class ),
                'Class ' . $class . ' for api module ' . $name . ' does not exist (with exact case)'
            );
        }
    }
 
    public function testCheckConditionalRequestHeaders(
        $headers, $conditions, $status, $options = []
    ) {
        $request = new FauxRequest(
            [ 'action' => 'query', 'meta' => 'siteinfo' ],
            !empty( $options['post'] )
        );
        $request->setHeaders( $headers );
        $request->response()->statusHeader( 200 ); // Why doesn't it default?
 
        $context = $this->apiContext->newTestContext( $request, null );
        $api = new ApiMain( $context );
        $priv = TestingAccessWrapper::newFromObject( $api );
        $priv->mInternalMode = false;
 
        if ( !empty( $options['cdn'] ) ) {
            $this->setMwGlobals( 'wgUseSquid', true );
        }
 
        // Can't do this in TestSetup.php because Setup.php will override it
        $this->setMwGlobals( 'wgCacheEpoch', '20030516000000' );
 
        $module = $this->getMockBuilder( ApiBase::class )
            ->setConstructorArgs( [ $api, 'mock' ] )
            ->setMethods( [ 'getConditionalRequestData' ] )
            ->getMockForAbstractClass();
        $module->expects( $this->any() )
            ->method( 'getConditionalRequestData' )
            ->will( $this->returnCallback( function ( $condition ) use ( $conditions ) {
                return $conditions[$condition] ?? null;
            } ) );
 
        $ret = $priv->checkConditionalRequestHeaders( $module );
 
        $this->assertSame( $status, $request->response()->getStatusCode() );
        $this->assertSame( $status === 200, $ret );
    }
 
    public static function provideCheckConditionalRequestHeaders() {
        global $wgSquidMaxage;
        $now = time();
 
        return [
            // Non-existing from module is ignored
            'If-None-Match' => [ [ 'If-None-Match' => '"foo", "bar"' ], [], 200 ],
            'If-Modified-Since' =>
                [ [ 'If-Modified-Since' => 'Tue, 18 Aug 2015 00:00:00 GMT' ], [], 200 ],
 
            // No headers
            'No headers' => [ [], [ 'etag' => '""', 'last-modified' => '20150815000000', ], 200 ],
 
            // Basic If-None-Match
            'If-None-Match with matching etag' =>
                [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"bar"' ], 304 ],
            'If-None-Match with non-matching etag' =>
                [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"baz"' ], 200 ],
            'Strong If-None-Match with weak matching etag' =>
                [ [ 'If-None-Match' => '"foo"' ], [ 'etag' => 'W/"foo"' ], 304 ],
            'Weak If-None-Match with strong matching etag' =>
                [ [ 'If-None-Match' => 'W/"foo"' ], [ 'etag' => '"foo"' ], 304 ],
            'Weak If-None-Match with weak matching etag' =>
                [ [ 'If-None-Match' => 'W/"foo"' ], [ 'etag' => 'W/"foo"' ], 304 ],
 
            // Pointless for GET, but supported
            'If-None-Match: *' => [ [ 'If-None-Match' => '*' ], [], 304 ],
 
            // Basic If-Modified-Since
            'If-Modified-Since, modified one second earlier' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
            'If-Modified-Since, modified now' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now ) ], 304 ],
            'If-Modified-Since, modified one second later' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now + 1 ) ], 200 ],
 
            // If-Modified-Since ignored when If-None-Match is given too
            'Non-matching If-None-Match and matching If-Modified-Since' =>
                [ [ 'If-None-Match' => '""',
                    'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
                    [ 'etag' => '"x"', 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200 ],
            'Non-matching If-None-Match and matching If-Modified-Since with no ETag' =>
                [
                    [
                        'If-None-Match' => '""',
                        'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now )
                    ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ],
                    304
                ],
 
            // Ignored for POST
            'Matching If-None-Match with POST' =>
                [ [ 'If-None-Match' => '"foo", "bar"' ], [ 'etag' => '"bar"' ], 200,
                    [ 'post' => true ] ],
            'Matching If-Modified-Since with POST' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200,
                    [ 'post' => true ] ],
 
            // Other date formats allowed by the RFC
            'If-Modified-Since with alternate date format 1' =>
                [ [ 'If-Modified-Since' => gmdate( 'l, d-M-y H:i:s', $now ) . ' GMT' ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
            'If-Modified-Since with alternate date format 2' =>
                [ [ 'If-Modified-Since' => gmdate( 'D M j H:i:s Y', $now ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 
            // Old browser extension to HTTP/1.0
            'If-Modified-Since with length' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now ) . '; length=123' ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 304 ],
 
            // Invalid date formats should be ignored
            'If-Modified-Since with invalid date format' =>
                [ [ 'If-Modified-Since' => gmdate( 'Y-m-d H:i:s', $now ) . ' GMT' ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200 ],
            'If-Modified-Since with entirely unparseable date' =>
                [ [ 'If-Modified-Since' => 'a potato' ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - 1 ) ], 200 ],
 
            // Anything before $wgSquidMaxage seconds ago should be considered
            // expired.
            'If-Modified-Since with CDN post-expiry' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now - $wgSquidMaxage * 2 ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - $wgSquidMaxage * 3 ) ],
                    200, [ 'cdn' => true ] ],
            'If-Modified-Since with CDN pre-expiry' =>
                [ [ 'If-Modified-Since' => wfTimestamp( TS_RFC2822, $now - $wgSquidMaxage / 2 ) ],
                    [ 'last-modified' => wfTimestamp( TS_MW, $now - $wgSquidMaxage * 3 ) ],
                    304, [ 'cdn' => true ] ],
        ];
    }
 
    public function testConditionalRequestHeadersOutput(
        $conditions, $headers, $isError = false, $post = false
    ) {
        $request = new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ], $post );
        $response = $request->response();
 
        $api = new ApiMain( $request );
        $priv = TestingAccessWrapper::newFromObject( $api );
        $priv->mInternalMode = false;
 
        $module = $this->getMockBuilder( ApiBase::class )
            ->setConstructorArgs( [ $api, 'mock' ] )
            ->setMethods( [ 'getConditionalRequestData' ] )
            ->getMockForAbstractClass();
        $module->expects( $this->any() )
            ->method( 'getConditionalRequestData' )
            ->will( $this->returnCallback( function ( $condition ) use ( $conditions ) {
                return $conditions[$condition] ?? null;
            } ) );
        $priv->mModule = $module;
 
        $priv->sendCacheHeaders( $isError );
 
        foreach ( [ 'Last-Modified', 'ETag' ] as $header ) {
            $this->assertEquals(
                $headers[$header] ?? null,
                $response->getHeader( $header ),
                $header
            );
        }
    }
 
    public static function provideConditionalRequestHeadersOutput() {
        return [
            [
                [],
                []
            ],
            [
                [ 'etag' => '"foo"' ],
                [ 'ETag' => '"foo"' ]
            ],
            [
                [ 'last-modified' => '20150818000102' ],
                [ 'Last-Modified' => 'Tue, 18 Aug 2015 00:01:02 GMT' ]
            ],
            [
                [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
                [ 'ETag' => '"foo"', 'Last-Modified' => 'Tue, 18 Aug 2015 00:01:02 GMT' ]
            ],
            [
                [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
                [],
                true,
            ],
            [
                [ 'etag' => '"foo"', 'last-modified' => '20150818000102' ],
                [],
                false,
                true,
            ],
        ];
    }
 
    public function testCheckExecutePermissionsReadProhibited() {
        $this->setExpectedException( ApiUsageException::class,
            'You need read permission to use this module.' );
 
        $this->setGroupPermissions( '*', 'read', false );
 
        $main = new ApiMain( new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] ) );
        $main->execute();
    }
 
    public function testCheckExecutePermissionWriteDisabled() {
        $this->setExpectedException( ApiUsageException::class,
            'Editing of this wiki through the API is disabled. Make sure the ' .
            '"$wgEnableWriteAPI=true;" statement is included in the wiki\'s ' .
            '"LocalSettings.php" file.' );
        $main = new ApiMain( new FauxRequest( [
            'action' => 'edit',
            'title' => 'Some page',
            'text' => 'Some text',
            'token' => '+\\',
        ] ) );
        $main->execute();
    }
 
    public function testCheckExecutePermissionWriteApiProhibited() {
        $this->setExpectedException( ApiUsageException::class,
            "You're not allowed to edit this wiki through the API." );
        $this->setGroupPermissions( '*', 'writeapi', false );
 
        $main = new ApiMain( new FauxRequest( [
            'action' => 'edit',
            'title' => 'Some page',
            'text' => 'Some text',
            'token' => '+\\',
        ] ), /* enableWrite = */ true );
        $main->execute();
    }
 
    public function testCheckExecutePermissionPromiseNonWrite() {
        $this->setExpectedException( ApiUsageException::class,
            'The "Promise-Non-Write-API-Action" HTTP header cannot be sent ' .
            'to write-mode API modules.' );
 
        $req = new FauxRequest( [
            'action' => 'edit',
            'title' => 'Some page',
            'text' => 'Some text',
            'token' => '+\\',
        ] );
        $req->setHeaders( [ 'Promise-Non-Write-API-Action' => '1' ] );
        $main = new ApiMain( $req, /* enableWrite = */ true );
        $main->execute();
    }
 
    public function testCheckExecutePermissionHookAbort() {
        $this->setExpectedException( ApiUsageException::class, 'Main Page' );
 
        $this->setTemporaryHook( 'ApiCheckCanExecute', function ( $unused1, $unused2, &$message ) {
            $message = 'mainpage';
            return false;
        } );
 
        $main = new ApiMain( new FauxRequest( [
            'action' => 'edit',
            'title' => 'Some page',
            'text' => 'Some text',
            'token' => '+\\',
        ] ), /* enableWrite = */ true );
        $main->execute();
    }
 
    public function testGetValUnsupportedArray() {
        $main = new ApiMain( new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'siprop' => [ 'general', 'namespaces' ],
        ] ) );
        $this->assertSame( 'myDefault', $main->getVal( 'siprop', 'myDefault' ) );
        $main->execute();
        $this->assertSame( 'Parameter "siprop" uses unsupported PHP array syntax.',
            $main->getResult()->getResultData()['warnings']['main']['warnings'] );
    }
 
    public function testReportUnusedParams() {
        $main = new ApiMain( new FauxRequest( [
            'action' => 'query',
            'meta' => 'siteinfo',
            'unusedparam' => 'unusedval',
            'anotherunusedparam' => 'anotherval',
        ] ) );
        $main->execute();
        $this->assertSame( 'Unrecognized parameters: unusedparam, anotherunusedparam.',
            $main->getResult()->getResultData()['warnings']['main']['warnings'] );
    }
 
    public function testLacksSameOriginSecurity() {
        // Basic test
        $main = new ApiMain( new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] ) );
        $this->assertFalse( $main->lacksSameOriginSecurity(), 'Basic test, should have security' );
 
        // JSONp
        $main = new ApiMain(
            new FauxRequest( [ 'action' => 'query', 'format' => 'xml', 'callback' => 'foo' ] )
        );
        $this->assertTrue( $main->lacksSameOriginSecurity(), 'JSONp, should lack security' );
 
        // Header
        $request = new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] );
        $request->setHeader( 'TrEaT-As-UnTrUsTeD', '' ); // With falsey value!
        $main = new ApiMain( $request );
        $this->assertTrue( $main->lacksSameOriginSecurity(), 'Header supplied, should lack security' );
 
        // Hook
        $this->mergeMwGlobalArrayValue( 'wgHooks', [
            'RequestHasSameOriginSecurity' => [ function () {
                return false;
            } ]
        ] );
        $main = new ApiMain( new FauxRequest( [ 'action' => 'query', 'meta' => 'siteinfo' ] ) );
        $this->assertTrue( $main->lacksSameOriginSecurity(), 'Hook, should lack security' );
    }
 
    public function testApiErrorFormatterCreation( array $request, array $expect ) {
        $context = new RequestContext();
        $context->setRequest( new FauxRequest( $request ) );
        $context->setLanguage( 'ru' );
 
        $main = new ApiMain( $context );
        $formatter = $main->getErrorFormatter();
        $wrappedFormatter = TestingAccessWrapper::newFromObject( $formatter );
 
        $this->assertSame( $expect['uselang'], $main->getLanguage()->getCode() );
        $this->assertInstanceOf( $expect['class'], $formatter );
        $this->assertSame( $expect['lang'], $formatter->getLanguage()->getCode() );
        $this->assertSame( $expect['format'], $wrappedFormatter->format );
        $this->assertSame( $expect['usedb'], $wrappedFormatter->useDB );
    }
 
    public static function provideApiErrorFormatterCreation() {
        return [
            'Default (BC)' => [ [], [
                'uselang' => 'ru',
                'class' => ApiErrorFormatter_BackCompat::class,
                'lang' => 'en',
                'format' => 'none',
                'usedb' => false,
            ] ],
            'BC ignores fields' => [ [ 'errorlang' => 'de', 'errorsuselocal' => 1 ], [
                'uselang' => 'ru',
                'class' => ApiErrorFormatter_BackCompat::class,
                'lang' => 'en',
                'format' => 'none',
                'usedb' => false,
            ] ],
            'Explicit BC' => [ [ 'errorformat' => 'bc' ], [
                'uselang' => 'ru',
                'class' => ApiErrorFormatter_BackCompat::class,
                'lang' => 'en',
                'format' => 'none',
                'usedb' => false,
            ] ],
            'Basic' => [ [ 'errorformat' => 'wikitext' ], [
                'uselang' => 'ru',
                'class' => ApiErrorFormatter::class,
                'lang' => 'ru',
                'format' => 'wikitext',
                'usedb' => false,
            ] ],
            'Follows uselang' => [ [ 'uselang' => 'fr', 'errorformat' => 'plaintext' ], [
                'uselang' => 'fr',
                'class' => ApiErrorFormatter::class,
                'lang' => 'fr',
                'format' => 'plaintext',
                'usedb' => false,
            ] ],
            'Explicitly follows uselang' => [
                [ 'uselang' => 'fr', 'errorlang' => 'uselang', 'errorformat' => 'plaintext' ],
                [
                    'uselang' => 'fr',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'fr',
                    'format' => 'plaintext',
                    'usedb' => false,
                ]
            ],
            'uselang=content' => [
                [ 'uselang' => 'content', 'errorformat' => 'plaintext' ],
                [
                    'uselang' => 'en',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'en',
                    'format' => 'plaintext',
                    'usedb' => false,
                ]
            ],
            'errorlang=content' => [
                [ 'errorlang' => 'content', 'errorformat' => 'plaintext' ],
                [
                    'uselang' => 'ru',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'en',
                    'format' => 'plaintext',
                    'usedb' => false,
                ]
            ],
            'Explicit parameters' => [
                [ 'errorlang' => 'de', 'errorformat' => 'html', 'errorsuselocal' => 1 ],
                [
                    'uselang' => 'ru',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'de',
                    'format' => 'html',
                    'usedb' => true,
                ]
            ],
            'Explicit parameters override uselang' => [
                [ 'errorlang' => 'de', 'uselang' => 'fr', 'errorformat' => 'raw' ],
                [
                    'uselang' => 'fr',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'de',
                    'format' => 'raw',
                    'usedb' => false,
                ]
            ],
            'Bogus language doesn\'t explode' => [
                [ 'errorlang' => '<bogus1>', 'uselang' => '<bogus2>', 'errorformat' => 'none' ],
                [
                    'uselang' => 'en',
                    'class' => ApiErrorFormatter::class,
                    'lang' => 'en',
                    'format' => 'none',
                    'usedb' => false,
                ]
            ],
            'Bogus format doesn\'t explode' => [ [ 'errorformat' => 'bogus' ], [
                'uselang' => 'ru',
                'class' => ApiErrorFormatter_BackCompat::class,
                'lang' => 'en',
                'format' => 'none',
                'usedb' => false,
            ] ],
        ];
    }
 
    public function testExceptionErrors( $error, $expectReturn, $expectResult ) {
        $context = new RequestContext();
        $context->setRequest( new FauxRequest( [ 'errorformat' => 'plaintext' ] ) );
        $context->setLanguage( 'en' );
        $context->setConfig( new MultiConfig( [
            new HashConfig( [
                'ShowHostnames' => true, 'ShowExceptionDetails' => true,
            ] ),
            $context->getConfig()
        ] ) );
 
        $main = new ApiMain( $context );
        $main->addWarning( new RawMessage( 'existing warning' ), 'existing-warning' );
        $main->addError( new RawMessage( 'existing error' ), 'existing-error' );
 
        $ret = TestingAccessWrapper::newFromObject( $main )->substituteResultWithError( $error );
        $this->assertSame( $expectReturn, $ret );
 
        // PHPUnit sometimes adds some SplObjectStorage garbage to the arrays,
        // so let's try ->assertEquals().
        $this->assertEquals(
            $expectResult,
            $main->getResult()->getResultData( [], [ 'Strip' => 'all' ] )
        );
    }
 
    // Not static so $this can be used
    public function provideExceptionErrors() {
        $reqId = WebRequest::getRequestId();
        $doclink = wfExpandUrl( wfScript( 'api' ) );
 
        $ex = new InvalidArgumentException( 'Random exception' );
        $trace = wfMessage( 'api-exception-trace',
            get_class( $ex ),
            $ex->getFile(),
            $ex->getLine(),
            MWExceptionHandler::getRedactedTraceAsString( $ex )
        )->inLanguage( 'en' )->useDatabase( false )->text();
 
        $dbex = new DBQueryError(
            $this->createMock( \Wikimedia\Rdbms\IDatabase::class ),
            'error', 1234, 'SELECT 1', __METHOD__ );
        $dbtrace = wfMessage( 'api-exception-trace',
            get_class( $dbex ),
            $dbex->getFile(),
            $dbex->getLine(),
            MWExceptionHandler::getRedactedTraceAsString( $dbex )
        )->inLanguage( 'en' )->useDatabase( false )->text();
 
        $apiEx1 = new ApiUsageException( null,
            StatusValue::newFatal( new ApiRawMessage( 'An error', 'sv-error1' ) ) );
        TestingAccessWrapper::newFromObject( $apiEx1 )->modulePath = 'foo+bar';
        $apiEx1->getStatusValue()->warning( new ApiRawMessage( 'A warning', 'sv-warn1' ) );
        $apiEx1->getStatusValue()->warning( new ApiRawMessage( 'Another warning', 'sv-warn2' ) );
        $apiEx1->getStatusValue()->fatal( new ApiRawMessage( 'Another error', 'sv-error2' ) );
 
        return [
            [
                $ex,
                [ 'existing-error', 'internal_api_error_InvalidArgumentException' ],
                [
                    'warnings' => [
                        [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
                    ],
                    'errors' => [
                        [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
                        [
                            'code' => 'internal_api_error_InvalidArgumentException',
                            'text' => "[$reqId] Exception caught: Random exception",
                        ]
                    ],
                    'trace' => $trace,
                    'servedby' => wfHostname(),
                ]
            ],
            [
                $dbex,
                [ 'existing-error', 'internal_api_error_DBQueryError' ],
                [
                    'warnings' => [
                        [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
                    ],
                    'errors' => [
                        [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
                        [
                            'code' => 'internal_api_error_DBQueryError',
                            'text' => "[$reqId] Exception caught: A database query error has occurred. " .
                                "This may indicate a bug in the software.",
                        ]
                    ],
                    'trace' => $dbtrace,
                    'servedby' => wfHostname(),
                ]
            ],
            [
                $apiEx1,
                [ 'existing-error', 'sv-error1', 'sv-error2' ],
                [
                    'warnings' => [
                        [ 'code' => 'existing-warning', 'text' => 'existing warning', 'module' => 'main' ],
                        [ 'code' => 'sv-warn1', 'text' => 'A warning', 'module' => 'foo+bar' ],
                        [ 'code' => 'sv-warn2', 'text' => 'Another warning', 'module' => 'foo+bar' ],
                    ],
                    'errors' => [
                        [ 'code' => 'existing-error', 'text' => 'existing error', 'module' => 'main' ],
                        [ 'code' => 'sv-error1', 'text' => 'An error', 'module' => 'foo+bar' ],
                        [ 'code' => 'sv-error2', 'text' => 'Another error', 'module' => 'foo+bar' ],
                    ],
                    'docref' => "See $doclink for API usage. Subscribe to the mediawiki-api-announce mailing " .
                        "list at &lt;https://lists.wikimedia.org/mailman/listinfo/mediawiki-api-announce&gt; " .
                        "for notice of API deprecations and breaking changes.",
                    'servedby' => wfHostname(),
                ]
            ],
        ];
    }
 
    public function testPrinterParameterValidationError() {
        $api = $this->getNonInternalApiMain( [
            'action' => 'query', 'meta' => 'siteinfo', 'format' => 'json', 'formatversion' => 'bogus',
        ] );
 
        ob_start();
        $api->execute();
        $txt = ob_get_clean();
 
        // Test that the actual output is valid JSON, not just the format of the ApiResult.
        $data = FormatJson::decode( $txt, true );
        $this->assertInternalType( 'array', $data );
        $this->assertArrayHasKey( 'error', $data );
        $this->assertArrayHasKey( 'code', $data['error'] );
        $this->assertSame( 'unknown_formatversion', $data['error']['code'] );
    }
}