PageDataRequestHandlerTest.php

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<?php
 
class PageDataRequestHandlerTest extends \MediaWikiLangTestCase {
 
    private $interfaceTitle;
 
    private $obLevel;
 
    protected function setUp() {
        parent::setUp();
 
        $this->interfaceTitle = Title::newFromText( __CLASS__ );
        $this->obLevel = ob_get_level();
 
        $this->setMwGlobals( 'wgArticlePath', '/wiki/$1' );
    }
 
    protected function tearDown() {
        $obLevel = ob_get_level();
 
        while ( ob_get_level() > $this->obLevel ) {
            ob_end_clean();
        }
 
        if ( $obLevel !== $this->obLevel ) {
            $this->fail( "Test changed output buffer level: was {$this->obLevel}" .
                "before test, but $obLevel after test."
            );
        }
 
        parent::tearDown();
    }
 
    protected function newHandler() {
        return new PageDataRequestHandler();
    }
 
    protected function makeOutputPage( array $params, array $headers ) {
        // construct request
        $request = new FauxRequest( $params );
        $request->response()->header( 'Status: 200 OK', true, 200 ); // init/reset
 
        foreach ( $headers as $name => $value ) {
            $request->setHeader( strtoupper( $name ), $value );
        }
 
        // construct Context and OutputPage
        $context = new DerivativeContext( RequestContext::getMain() );
        $context->setRequest( $request );
 
        $output = new OutputPage( $context );
        $output->setTitle( $this->interfaceTitle );
        $context->setOutput( $output );
 
        return $output;
    }
 
    public function handleRequestProvider() {
        $cases = [];
 
        $cases[] = [ '', [], [], 'Invalid title', 400 ];
 
        $cases[] = [
            '',
            [ 'target' => 'Helsinki' ],
            [],
            '',
            303,
            [ 'Location' => '?title=Helsinki&action=raw' ]
        ];
 
        $subpageCases = [];
        foreach ( $cases as $c ) {
            $case = $c;
            $case[0] = 'main/';
 
            if ( isset( $case[1]['target'] ) ) {
                $case[0] .= $case[1]['target'];
                unset( $case[1]['target'] );
            }
 
            $subpageCases[] = $case;
        }
 
        $cases = array_merge( $cases, $subpageCases );
 
        $cases[] = [
            '',
            [ 'target' => 'Helsinki' ],
            [ 'Accept' => 'text/HTML' ],
            '',
            303,
            [ 'Location' => '/wiki/Helsinki' ]
        ];
 
        $cases[] = [
            '',
            [
                'target' => 'Helsinki',
                'revision' => '4242',
            ],
            [ 'Accept' => 'text/HTML' ],
            '',
            303,
            [ 'Location' => '?title=Helsinki&oldid=4242' ]
        ];
 
        $cases[] = [
            '/Helsinki',
            [],
            [],
            '',
            303,
            [ 'Location' => '?title=Helsinki&action=raw' ]
        ];
 
        // #31: /Q5 with "Accept: text/foobar" triggers a 406
        $cases[] = [
            'main/Helsinki',
            [],
            [ 'Accept' => 'text/foobar' ],
            'No matching format found',
            406,
        ];
 
        $cases[] = [
            'no slash',
            [],
            [ 'Accept' => 'text/HTML' ],
            'Invalid title',
            400,
        ];
 
        $cases[] = [
            'main',
            [],
            [ 'Accept' => 'text/HTML' ],
            'Invalid title',
            400,
        ];
 
        $cases[] = [
            'xyz/Helsinki',
            [],
            [ 'Accept' => 'text/HTML' ],
            'Invalid title',
            400,
        ];
 
        $cases[] = [
            'main/Helsinki',
            [],
            [ 'Accept' => 'text/HTML' ],
            '',
            303,
            [ 'Location' => '/wiki/Helsinki' ]
        ];
 
        $cases[] = [
            '/Helsinki',
            [],
            [ 'Accept' => 'text/HTML' ],
            '',
            303,
            [ 'Location' => '/wiki/Helsinki' ]
        ];
 
        $cases[] = [
            'main/AC/DC',
            [],
            [ 'Accept' => 'text/HTML' ],
            '',
            303,
            [ 'Location' => '/wiki/AC/DC' ]
        ];
 
        return $cases;
    }
 
    public function testHandleRequest(
        $subpage,
        array $params,
        array $headers,
        $expectedOutput = '',
        $expectedStatusCode = 200,
        array $expectedHeaders = []
    ) {
        $output = $this->makeOutputPage( $params, $headers );
        $request = $output->getRequest();
 
        /* @var FauxResponse $response */
        $response = $request->response();
 
        // construct handler
        $handler = $this->newHandler();
 
        try {
            ob_start();
            $handler->handleRequest( $subpage, $request, $output );
 
            if ( $output->getRedirect() !== '' ) {
                // hack to apply redirect to web response
                $output->output();
            }
 
            $text = ob_get_clean();
 
            $this->assertEquals( $expectedStatusCode, $response->getStatusCode(), 'status code' );
            $this->assertSame( $expectedOutput, $text, 'output' );
 
            foreach ( $expectedHeaders as $name => $exp ) {
                $value = $response->getHeader( $name );
                $this->assertNotNull( $value, "header: $name" );
                $this->assertInternalType( 'string', $value, "header: $name" );
                $this->assertStringEndsWith( $exp, $value, "header: $name" );
            }
        } catch ( HttpError $e ) {
            ob_end_clean();
            $this->assertEquals( $expectedStatusCode, $e->getStatusCode(), 'status code' );
            $this->assertContains( $expectedOutput, $e->getHTML(), 'error output' );
        }
 
        // We always set "Access-Control-Allow-Origin: *"
        $this->assertSame( '*', $response->getHeader( 'Access-Control-Allow-Origin' ) );
    }
 
    public function provideHttpContentNegotiation() {
        $helsinki = Title::newFromText( 'Helsinki' );
        return [
            'Accept Header of HTML' => [
                $helsinki,
                [ 'ACCEPT' => 'text/html' ], // headers
                'Helsinki'
            ],
            'Accept Header without weights' => [
                $helsinki,
                [ 'ACCEPT' => '*/*, text/html, text/x-wiki' ],
                'Helsinki&action=raw'
            ],
            'Accept Header with weights' => [
                $helsinki,
                [ 'ACCEPT' => 'text/*; q=0.5, text/json; q=0.7, application/rdf+xml; q=0.8' ],
                'Helsinki&action=raw'
            ],
            'Accept Header accepting evertyhing and HTML' => [
                $helsinki,
                [ 'ACCEPT' => 'text/html, */*' ],
                'Helsinki&action=raw'
            ],
            'No Accept Header' => [
                $helsinki,
                [],
                'Helsinki&action=raw'
            ],
        ];
    }
 
    public function testHttpContentNegotiation(
        Title $title,
        array $headers,
        $expectedRedirectSuffix
    ) {
        /* @var FauxResponse $response */
        $output = $this->makeOutputPage( [], $headers );
        $request = $output->getRequest();
 
        $handler = $this->newHandler();
        $handler->httpContentNegotiation( $request, $output, $title );
 
        $this->assertStringEndsWith(
            $expectedRedirectSuffix,
            $output->getRedirect(),
            'redirect target'
        );
    }
}