fetchTextTest.php

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<?php

require_once __DIR__ . "/../../../maintenance/fetchText.php";

class SemiMockedFetchText extends FetchText {

        private $mockStdinText = null;

        private $mockSetUp = False;

        private $mockInvocations = array( 'getStdin' => 0 );



        function mockStdin( $stdin )
        {
                $this->mockStdinText = $stdin;
                $this->mockSetUp = True;
        }

        function mockGetInvocations()
        {
                return $this->mockInvocations;
        }

        // -----------------------------------------------------------------
        // Mocked functions from FetchText follow.

        function getStdin( $len = null )
        {
                $this->mockInvocations['getStdin']++;
                if ( $len !== null ) {
                        throw new PHPUnit_Framework_ExpectationFailedException(
                                "Tried to get stdin with non null parameter" );
                }

                if ( ! $this->mockSetUp ) {
                        throw new PHPUnit_Framework_ExpectationFailedException(
                                "Tried to get stdin before setting up rerouting" );
                }

                return fopen( 'data://text/plain,' . $this->mockStdinText, 'r' );
        }

}

class FetchTextTest extends MediaWikiTestCase {

        // We add 5 Revisions for this test. Their corresponding text id's
        // are stored in the following 5 variables.
        private $textId1;
        private $textId2;
        private $textId3;
        private $textId4;
        private $textId5;


        private $exceptionFromAddDBData;

        private $fetchText;

        private function addRevision( $page, $text, $summary ) {
                $status = $page->doEdit( $text, $summary );
                if ( $status->isGood() ) {
                        $value = $status->getValue();
                        $revision = $value['revision'];
                        $id = $revision->getTextId();
                        if ( $id > 0 ) {
                                return $id;
                        }
                }
                throw new MWException( "Could not determine text id" );
        }


        function addDBData() {
                $this->tablesUsed[] = 'page';
                $this->tablesUsed[] = 'revision';
                $this->tablesUsed[] = 'text';

                try {
                        $title = Title::newFromText( 'FetchTextTestPage1' );
                        $page = WikiPage::factory( $title );
                        $this->textId1 = $this->addRevision( $page, "FetchTextTestPage1Text1", "FetchTextTestPage1Summary1" );

                        $title = Title::newFromText( 'FetchTextTestPage2' );
                        $page = WikiPage::factory( $title );
                        $this->textId2 = $this->addRevision( $page, "FetchTextTestPage2Text1", "FetchTextTestPage2Summary1" );
                        $this->textId3 = $this->addRevision( $page, "FetchTextTestPage2Text2", "FetchTextTestPage2Summary2" );
                        $this->textId4 = $this->addRevision( $page, "FetchTextTestPage2Text3", "FetchTextTestPage2Summary3" );
                        $this->textId5 = $this->addRevision( $page, "FetchTextTestPage2Text4 some additional Text  ", "FetchTextTestPage2Summary4 extra " );
                } catch ( Exception $e ) {
                        // We'd love to pass $e directly. However, ... see
                        // documentation of exceptionFromAddDBData
                        $this->exceptionFromAddDBData = $e;
                }
        }


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

                // Check if any Exception is stored for rethrowing from addDBData
                if ( $this->exceptionFromAddDBData !== null ) {
                        throw $this->exceptionFromAddDBData;
                }

                $this->fetchText = new SemiMockedFetchText();
        }


        private function assertFilter( $input, $expectedOutput ) {
                $this->fetchText->mockStdin( $input );
                $this->fetchText->execute();
                $invocations = $this->fetchText->mockGetInvocations();
                $this->assertEquals( 1, $invocations['getStdin'],
                        "getStdin invocation counter" );
                $this->expectOutputString( $expectedOutput );
        }



        // Instead of the following functions, a data provider would be great.
        // However, as data providers are evaluated /before/ addDBData, a data
        // provider would not know the required ids.

        function testExistingSimple() {
                $this->assertFilter( $this->textId2,
                        $this->textId2 . "\n23\nFetchTextTestPage2Text1" );
        }

        function testExistingSimpleWithNewline() {
                $this->assertFilter( $this->textId2 . "\n",
                        $this->textId2 . "\n23\nFetchTextTestPage2Text1" );
        }

        function testExistingSeveral() {
                $this->assertFilter( "$this->textId1\n$this->textId5\n"
                        . "$this->textId3\n$this->textId3",
                        implode( "", array(
                                        $this->textId1 . "\n23\nFetchTextTestPage1Text1",
                                        $this->textId5 . "\n44\nFetchTextTestPage2Text4 "
                                        . "some additional Text",
                                        $this->textId3 . "\n23\nFetchTextTestPage2Text2",
                                        $this->textId3 . "\n23\nFetchTextTestPage2Text2"
                                ) ) );
        }

        function testEmpty() {
                $this->assertFilter( "", null );
        }

        function testNonExisting() {
                $this->assertFilter( $this->textId5 + 10, ( $this->textId5 + 10 ) . "\n-1\n" );
        }

        function testNegativeInteger() {
                $this->assertFilter( "-42", "-42\n-1\n" );
        }

        function testFloatingPointNumberExisting() {
                // float -> int -> revision
                $this->assertFilter( $this->textId3 + 0.14159,
                        $this->textId3 . "\n23\nFetchTextTestPage2Text2" );
        }

        function testFloatingPointNumberNonExisting() {
                $this->assertFilter( $this->textId5 + 3.14159,
                        ( $this->textId5 + 3 ) . "\n-1\n" );
        }

        function testCharacters() {
                $this->assertFilter( "abc", "0\n-1\n" );
        }

        function testMix() {
                $this->assertFilter( "ab\n" . $this->textId4 . ".5cd\n\nefg\n" . $this->textId2
                        . "\n" . $this->textId3,
                        implode( "", array(
                                        "0\n-1\n",
                                        $this->textId4 . "\n23\nFetchTextTestPage2Text3",
                                        "0\n-1\n",
                                        "0\n-1\n",
                                        $this->textId2 . "\n23\nFetchTextTestPage2Text1",
                                        $this->textId3 . "\n23\nFetchTextTestPage2Text2"
                                ) ) );
        }

}