GitInfoTest.php

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<?php
class GitInfoTest extends MediaWikiTestCase {
 
    private static $tempDir;
 
    public static function setUpBeforeClass() {
        self::$tempDir = wfTempDir() . '/mw-phpunit-' . wfRandomString( 8 );
        if ( !mkdir( self::$tempDir ) ) {
            self::$tempDir = null;
            throw new Exception( 'Unable to create temporary directory' );
        }
        mkdir( self::$tempDir . '/gitrepo' );
        mkdir( self::$tempDir . '/gitrepo/1' );
        mkdir( self::$tempDir . '/gitrepo/2' );
        mkdir( self::$tempDir . '/gitrepo/3' );
        mkdir( self::$tempDir . '/gitrepo/1/.git' );
        mkdir( self::$tempDir . '/gitrepo/1/.git/refs' );
        mkdir( self::$tempDir . '/gitrepo/1/.git/refs/heads' );
        file_put_contents( self::$tempDir . '/gitrepo/1/.git/HEAD',
            "ref: refs/heads/master\n" );
        file_put_contents( self::$tempDir . '/gitrepo/1/.git/refs/heads/master',
            "0123456789012345678901234567890123abcdef\n" );
        file_put_contents( self::$tempDir . '/gitrepo/1/.git/packed-refs',
            "abcdef6789012345678901234567890123456789 refs/heads/master\n" );
        file_put_contents( self::$tempDir . '/gitrepo/2/.git',
            "gitdir: ../1/.git\n" );
        file_put_contents( self::$tempDir . '/gitrepo/3/.git',
            'gitdir: ' . self::$tempDir . "/gitrepo/1/.git\n" );
    }
 
    public static function tearDownAfterClass() {
        if ( self::$tempDir ) {
            wfRecursiveRemoveDir( self::$tempDir );
        }
    }
 
    protected function setUp() {
        parent::setUp();
        $this->setMwGlobals( 'wgGitInfoCacheDirectory', __DIR__ . '/../data/gitinfo' );
    }
 
    protected function assertValidGitInfo( GitInfo $gitInfo ) {
        $this->assertTrue( $gitInfo->cacheIsComplete() );
        $this->assertEquals( 'refs/heads/master', $gitInfo->getHead() );
        $this->assertEquals( '0123456789abcdef0123456789abcdef01234567',
            $gitInfo->getHeadSHA1() );
        $this->assertEquals( '1070884800', $gitInfo->getHeadCommitDate() );
        $this->assertEquals( 'master', $gitInfo->getCurrentBranch() );
        $this->assertContains( '0123456789abcdef0123456789abcdef01234567',
            $gitInfo->getHeadViewUrl() );
    }
 
    public function testValidJsonData() {
        global $IP;
 
        $this->assertValidGitInfo( new GitInfo( "$IP/testValidJsonData" ) );
        $this->assertValidGitInfo( new GitInfo( __DIR__ . "/../data/gitinfo/extension" ) );
    }
 
    public function testMissingJsonData() {
        $dir = $GLOBALS['IP'] . '/testMissingJsonData';
        $fixture = new GitInfo( $dir );
 
        $this->assertFalse( $fixture->cacheIsComplete() );
 
        $this->assertEquals( false, $fixture->getHead() );
        $this->assertEquals( false, $fixture->getHeadSHA1() );
        $this->assertEquals( false, $fixture->getHeadCommitDate() );
        $this->assertEquals( false, $fixture->getCurrentBranch() );
        $this->assertEquals( false, $fixture->getHeadViewUrl() );
 
        // After calling all the outputs, the cache should be complete
        $this->assertTrue( $fixture->cacheIsComplete() );
    }
 
    public function testReadingHead() {
        $dir = self::$tempDir . '/gitrepo/1';
        $fixture = new GitInfo( $dir );
 
        $this->assertEquals( 'refs/heads/master', $fixture->getHead() );
        $this->assertEquals( '0123456789012345678901234567890123abcdef', $fixture->getHeadSHA1() );
    }
 
    public function testIndirection() {
        $dir = self::$tempDir . '/gitrepo/2';
        $fixture = new GitInfo( $dir );
 
        $this->assertEquals( 'refs/heads/master', $fixture->getHead() );
        $this->assertEquals( '0123456789012345678901234567890123abcdef', $fixture->getHeadSHA1() );
    }
 
    public function testIndirection2() {
        $dir = self::$tempDir . '/gitrepo/3';
        $fixture = new GitInfo( $dir );
 
        $this->assertEquals( 'refs/heads/master', $fixture->getHead() );
        $this->assertEquals( '0123456789012345678901234567890123abcdef', $fixture->getHeadSHA1() );
    }
 
    public function testReadingPackedRefs() {
        $dir = self::$tempDir . '/gitrepo/1';
        unlink( self::$tempDir . '/gitrepo/1/.git/refs/heads/master' );
        $fixture = new GitInfo( $dir );
 
        $this->assertEquals( 'refs/heads/master', $fixture->getHead() );
        $this->assertEquals( 'abcdef6789012345678901234567890123456789', $fixture->getHeadSHA1() );
    }
}