AutoLoaderTest.php

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<?php
 
class AutoLoaderTest extends MediaWikiTestCase {
    protected function setUp() {
        parent::setUp();
 
        // Fancy dance to trigger a rebuild of AutoLoader::$autoloadLocalClassesLower
        $this->mergeMwGlobalArrayValue( 'wgAutoloadLocalClasses', [
            'TestAutoloadedLocalClass' =>
                __DIR__ . '/../data/autoloader/TestAutoloadedLocalClass.php',
            'TestAutoloadedCamlClass' =>
                __DIR__ . '/../data/autoloader/TestAutoloadedCamlClass.php',
            'TestAutoloadedSerializedClass' =>
                __DIR__ . '/../data/autoloader/TestAutoloadedSerializedClass.php',
        ] );
        AutoLoader::resetAutoloadLocalClassesLower();
 
        $this->mergeMwGlobalArrayValue( 'wgAutoloadClasses', [
            'TestAutoloadedClass' => __DIR__ . '/../data/autoloader/TestAutoloadedClass.php',
        ] );
    }
 
    public function testAutoLoadConfig() {
        $results = self::checkAutoLoadConf();
 
        $this->assertEquals(
            $results['expected'],
            $results['actual']
        );
    }
 
    protected static function checkAutoLoadConf() {
        global $wgAutoloadLocalClasses, $wgAutoloadClasses, $IP;
 
        // wgAutoloadLocalClasses has precedence, just like in includes/AutoLoader.php
        $expected = $wgAutoloadLocalClasses + $wgAutoloadClasses;
        $actual = [];
 
        $files = array_unique( $expected );
 
        foreach ( $files as $class => $file ) {
            // Only prefix $IP if it doesn't have it already.
            // Generally local classes don't have it, and those from extensions and test suites do.
            if ( substr( $file, 0, 1 ) != '/' && substr( $file, 1, 1 ) != ':' ) {
                $filePath = "$IP/$file";
            } else {
                $filePath = $file;
            }
 
            if ( !file_exists( $filePath ) ) {
                $actual[$class] = "[file '$filePath' does not exist]";
                continue;
            }
 
            MediaWiki\suppressWarnings();
            $contents = file_get_contents( $filePath );
            MediaWiki\restoreWarnings();
 
            if ( $contents === false ) {
                $actual[$class] = "[couldn't read file '$filePath']";
                continue;
            }
 
            // We could use token_get_all() here, but this is faster
            // Note: Keep in sync with ClassCollector
            $matches = [];
            preg_match_all( '/
                ^ [\t ]* (?:
                    (?:final\s+)? (?:abstract\s+)? (?:class|interface|trait) \s+
                    (?P<class> [a-zA-Z0-9_]+)
                |
                    class_alias \s* \( \s*
                        ([\'"]) (?P<original> [^\'"]+) \g{-2} \s* , \s*
                        ([\'"]) (?P<alias> [^\'"]+ ) \g{-2} \s*
                    \) \s* ;
                |
                    class_alias \s* \( \s*
                        (?P<originalStatic> [a-zA-Z0-9_]+)::class \s* , \s*
                        ([\'"]) (?P<aliasString> [^\'"]+ ) \g{-2} \s*
                    \) \s* ;
                )
            /imx', $contents, $matches, PREG_SET_ORDER );
 
            $namespaceMatch = [];
            preg_match( '/
                ^ [\t ]*
                    namespace \s+
                        ([a-zA-Z0-9_]+(\\\\[a-zA-Z0-9_]+)*)
                    \s* ;
            /imx', $contents, $namespaceMatch );
            $fileNamespace = $namespaceMatch ? $namespaceMatch[1] . '\\' : '';
 
            $classesInFile = [];
            $aliasesInFile = [];
 
            foreach ( $matches as $match ) {
                if ( !empty( $match['class'] ) ) {
                    // 'class Foo {}'
                    $class = $fileNamespace . $match['class'];
                    $actual[$class] = $file;
                    $classesInFile[$class] = true;
                } else {
                    if ( !empty( $match['original'] ) ) {
                        // 'class_alias( "Foo", "Bar" );'
                        $aliasesInFile[$match['alias']] = $match['original'];
                    } else {
                        // 'class_alias( Foo::class, "Bar" );'
                        $aliasesInFile[$match['aliasString']] = $fileNamespace . $match['originalStatic'];
                    }
                }
            }
 
            // Only accept aliases for classes in the same file, because for correct
            // behavior, all aliases for a class must be set up when the class is loaded
            // (see <https://bugs.php.net/bug.php?id=61422>).
            foreach ( $aliasesInFile as $alias => $class ) {
                if ( isset( $classesInFile[$class] ) ) {
                    $actual[$alias] = $file;
                } else {
                    $actual[$alias] = "[original class not in $file]";
                }
            }
        }
 
        return [
            'expected' => $expected,
            'actual' => $actual,
        ];
    }
 
    function testCoreClass() {
        $this->assertTrue( class_exists( 'TestAutoloadedLocalClass' ) );
    }
 
    function testExtensionClass() {
        $this->assertTrue( class_exists( 'TestAutoloadedClass' ) );
    }
 
    function testWrongCaseClass() {
        $this->setMwGlobals( 'wgAutoloadAttemptLowercase', true );
 
        $this->assertTrue( class_exists( 'testautoLoadedcamlCLASS' ) );
    }
 
    function testWrongCaseSerializedClass() {
        $this->setMwGlobals( 'wgAutoloadAttemptLowercase', true );
 
        $dummyCereal = 'O:29:"testautoloadedserializedclass":0:{}';
        $uncerealized = unserialize( $dummyCereal );
        $this->assertFalse( $uncerealized instanceof __PHP_Incomplete_Class,
            "unserialize() can load classes case-insensitively." );
    }
 
    function testAutoloadOrder() {
        $path = realpath( __DIR__ . '/../../..' );
        $oldAutoload = file_get_contents( $path . '/autoload.php' );
        $generator = new AutoloadGenerator( $path, 'local' );
        $generator->initMediaWikiDefault();
        $newAutoload = $generator->getAutoload( 'maintenance/generateLocalAutoload.php' );
 
        $this->assertEquals( $oldAutoload, $newAutoload, 'autoload.php does not match' .
            ' output of generateLocalAutoload.php script.' );
    }
}