tests/phpunit/structure/AutoLoaderTest.php

   1 <?php
   2
   3 class AutoLoaderTest extends MediaWikiTestCase {
   4         protected function setUp() {
   5                 parent::setUp();
   6
   7                 // Fancy dance to trigger a rebuild of AutoLoader::$autoloadLocalClassesLower
   8                 $this->mergeMwGlobalArrayValue( 'wgAutoloadLocalClasses', [
   9                         'TestAutoloadedLocalClass' =>
  10                                 __DIR__ . '/../data/autoloader/TestAutoloadedLocalClass.php',
  11                         'TestAutoloadedCamlClass' =>
  12                                 __DIR__ . '/../data/autoloader/TestAutoloadedCamlClass.php',
  13                         'TestAutoloadedSerializedClass' =>
  14                                 __DIR__ . '/../data/autoloader/TestAutoloadedSerializedClass.php',
  15                 ] );
  16                 AutoLoader::resetAutoloadLocalClassesLower();
  17
  18                 $this->mergeMwGlobalArrayValue( 'wgAutoloadClasses', [
  19                         'TestAutoloadedClass' => __DIR__ . '/../data/autoloader/TestAutoloadedClass.php',
  20                 ] );
  21         }
  22
  23         /**
  24          * Assert that there were no classes loaded that are not registered with the AutoLoader.
  25          *
  26          * For example foo.php having class Foo and class Bar but only registering Foo.
  27          * This is important because we should not be relying on Foo being used before Bar.
  28          */
  29         public function testAutoLoadConfig() {
  30                 $results = self::checkAutoLoadConf();
  31
  32                 $this->assertEquals(
  33                         $results['expected'],
  34                         $results['actual']
  35                 );
  36         }
  37
  38         protected static function checkAutoLoadConf() {
  39                 global $wgAutoloadLocalClasses, $wgAutoloadClasses, $IP;
  40
  41                 // wgAutoloadLocalClasses has precedence, just like in includes/AutoLoader.php
  42                 $expected = $wgAutoloadLocalClasses + $wgAutoloadClasses;
  43                 $actual = [];
  44
  45                 $files = array_unique( $expected );
  46
  47                 foreach ( $files as $class => $file ) {
  48                         // Only prefix $IP if it doesn't have it already.
  49                         // Generally local classes don't have it, and those from extensions and test suites do.
  50                         if ( substr( $file, 0, 1 ) != '/' && substr( $file, 1, 1 ) != ':' ) {
  51                                 $filePath = "$IP/$file";
  52                         } else {
  53                                 $filePath = $file;
  54                         }
  55
  56                         if ( !file_exists( $filePath ) ) {
  57                                 $actual[$class] = "[file '$filePath' does not exist]";
  58                                 continue;
  59                         }
  60
  61                         Wikimedia\suppressWarnings();
  62                         $contents = file_get_contents( $filePath );
  63                         Wikimedia\restoreWarnings();
  64
  65                         if ( $contents === false ) {
  66                                 $actual[$class] = "[couldn't read file '$filePath']";
  67                                 continue;
  68                         }
  69
  70                         // We could use token_get_all() here, but this is faster
  71                         // Note: Keep in sync with ClassCollector
  72                         $matches = [];
  73                         preg_match_all( '/
  74                                 ^ [\t ]* (?:
  75                                         (?:final\s+)? (?:abstract\s+)? (?:class|interface|trait) \s+
  76                                         (?P<class> [a-zA-Z0-9_]+)
  77                                 |
  78                                         class_alias \s* \( \s*
  79                                                 ([\'"]) (?P<original> [^\'"]+) \g{-2} \s* , \s*
  80                                                 ([\'"]) (?P<alias> [^\'"]+ ) \g{-2} \s*
  81                                         \) \s* ;
  82                                 |
  83                                         class_alias \s* \( \s*
  84                                                 (?P<originalStatic> [a-zA-Z0-9_]+)::class \s* , \s*
  85                                                 ([\'"]) (?P<aliasString> [^\'"]+ ) \g{-2} \s*
  86                                         \) \s* ;
  87                                 )
  88                         /imx', $contents, $matches, PREG_SET_ORDER );
  89
  90                         $namespaceMatch = [];
  91                         preg_match( '/
  92                                 ^ [\t ]*
  93                                         namespace \s+
  94                                                 ([a-zA-Z0-9_]+(\\\\[a-zA-Z0-9_]+)*)
  95                                         \s* ;
  96                         /imx', $contents, $namespaceMatch );
  97                         $fileNamespace = $namespaceMatch ? $namespaceMatch[1] . '\\' : '';
  98
  99                         $classesInFile = [];
 100                         $aliasesInFile = [];
 101
 102                         foreach ( $matches as $match ) {
 103                                 if ( !empty( $match['class'] ) ) {
 104                                         // 'class Foo {}'
 105                                         $class = $fileNamespace . $match['class'];
 106                                         $actual[$class] = $file;
 107                                         $classesInFile[$class] = true;
 108                                 } else {
 109                                         if ( !empty( $match['original'] ) ) {
 110                                                 // 'class_alias( "Foo", "Bar" );'
 111                                                 $aliasesInFile[$match['alias']] = $match['original'];
 112                                         } else {
 113                                                 // 'class_alias( Foo::class, "Bar" );'
 114                                                 $aliasesInFile[$match['aliasString']] = $fileNamespace . $match['originalStatic'];
 115                                         }
 116                                 }
 117                         }
 118
 119                         // Only accept aliases for classes in the same file, because for correct
 120                         // behavior, all aliases for a class must be set up when the class is loaded
 121                         // (see <https://bugs.php.net/bug.php?id=61422>).
 122                         foreach ( $aliasesInFile as $alias => $class ) {
 123                                 if ( isset( $classesInFile[$class] ) ) {
 124                                         $actual[$alias] = $file;
 125                                 } else {
 126                                         $actual[$alias] = "[original class not in $file]";
 127                                 }
 128                         }
 129                 }
 130
 131                 return [
 132                         'expected' => $expected,
 133                         'actual' => $actual,
 134                 ];
 135         }
 136
 137         function testCoreClass() {
 138                 $this->assertTrue( class_exists( 'TestAutoloadedLocalClass' ) );
 139         }
 140
 141         function testExtensionClass() {
 142                 $this->assertTrue( class_exists( 'TestAutoloadedClass' ) );
 143         }
 144
 145         function testWrongCaseClass() {
 146                 $this->setMwGlobals( 'wgAutoloadAttemptLowercase', true );
 147
 148                 $this->assertTrue( class_exists( 'testautoLoadedcamlCLASS' ) );
 149         }
 150
 151         function testWrongCaseSerializedClass() {
 152                 $this->setMwGlobals( 'wgAutoloadAttemptLowercase', true );
 153
 154                 $dummyCereal = 'O:29:"testautoloadedserializedclass":0:{}';
 155                 $uncerealized = unserialize( $dummyCereal );
 156                 $this->assertFalse( $uncerealized instanceof __PHP_Incomplete_Class,
 157                         "unserialize() can load classes case-insensitively." );
 158         }
 159
 160         function testAutoloadOrder() {
 161                 $path = realpath( __DIR__ . '/../../..' );
 162                 $oldAutoload = file_get_contents( $path . '/autoload.php' );
 163                 $generator = new AutoloadGenerator( $path, 'local' );
 164                 $generator->setExcludePaths( array_values( AutoLoader::getAutoloadNamespaces() ) );
 165                 $generator->initMediaWikiDefault();
 166                 $newAutoload = $generator->getAutoload( 'maintenance/generateLocalAutoload.php' );
 167
 168                 $this->assertEquals( $oldAutoload, $newAutoload, 'autoload.php does not match' .
 169                         ' output of generateLocalAutoload.php script.' );
 170         }
 171 }