crm.fsf.org/20131203/files/sites/all/modules-new/libraries/tests/LibrariesLoadWebTest.test

   1 <?php
   2
   3 /**
   4  * @file
   5  * Contains LibrariesLoadWebTest.
   6  *
   7  * Simpletest automatically discovers test files using PSR-4. We cannot,
   8  * however, declare a namespace for this class, as that would require PHP 5.3.
   9  * To prepare the PHP 5.3 requirement and the usage of PSR-4 in 7.x-3.x, we
  10  * place the test files in the correct directory already, but for now register
  11  * them explicitly in libraries.info
  12  */
  13
  14 /**
  15  * Tests basic detection and loading of libraries.
  16  */
  17 class LibrariesLoadWebTest extends LibrariesWebTestBase {
  18
  19   /**
  20    * Provides metadata about this test.
  21    *
  22    * @return array
  23    *   An array of test metadata with the following keys:
  24    *   - name: The name of the test.
  25    *   - description: The description of the test.
  26    *   - group: The group of the test.
  27    */
  28   public static function getInfo() {
  29     return array(
  30       'name' => 'Libraries detection and loading',
  31       'description' => 'Tests detection and loading of libraries.',
  32       'group' => 'Libraries API',
  33     );
  34   }
  35
  36   /**
  37    * Tests libraries_detect_dependencies().
  38    */
  39   public function testLibrariesDetectDependencies() {
  40     $library = array(
  41       'name' => 'Example',
  42       'dependencies' => array('example_missing'),
  43     );
  44     libraries_detect_dependencies($library);
  45     $this->assertEqual($library['error'], 'missing dependency', 'libraries_detect_dependencies() detects missing dependency');
  46     $error_message = t('The %dependency library, which the %library library depends on, is not installed.', array(
  47       '%dependency' => 'Example missing',
  48       '%library' => $library['name'],
  49     ));
  50     $this->verbose("Expected:<br>$error_message");
  51     $this->verbose('Actual:<br>' . $library['error message']);
  52     $this->assertEqual($library['error message'], $error_message, 'Correct error message for a missing dependency');
  53     // Test versioned dependencies.
  54     $version = '1.1';
  55     $compatible = array(
  56       '1.1',
  57       '<=1.1',
  58       '>=1.1',
  59       '<1.2',
  60       '<2.0',
  61       '>1.0',
  62       '>1.0-rc1',
  63       '>1.0-beta2',
  64       '>1.0-alpha3',
  65       '>0.1',
  66       '<1.2, >1.0',
  67       '>0.1, <=1.1',
  68     );
  69     $incompatible = array(
  70       '1.2',
  71       '2.0',
  72       '<1.1',
  73       '>1.1',
  74       '<=1.0',
  75       '<=1.0-rc1',
  76       '<=1.0-beta2',
  77       '<=1.0-alpha3',
  78       '>=1.2',
  79       '<1.1, >0.9',
  80       '>=0.1, <1.1',
  81     );
  82     $library = array(
  83       'name' => 'Example',
  84     );
  85     foreach ($compatible as $version_string) {
  86       $library['dependencies'][0] = "example_dependency ($version_string)";
  87       // libraries_detect_dependencies() is a post-detect callback, so
  88       // 'installed' is already set, when it is called. It sets the value to
  89       // FALSE for missing or incompatible dependencies.
  90       $library['installed'] = TRUE;
  91       libraries_detect_dependencies($library);
  92       $this->verbose('Library:<pre>' . var_export($library, TRUE) . '</pre>');
  93       $this->assertTrue($library['installed'], "libraries_detect_dependencies() detects compatible version string: '$version_string' is compatible with '$version'");
  94     }
  95     foreach ($incompatible as $version_string) {
  96       $library['dependencies'][0] = "example_dependency ($version_string)";
  97       $library['installed'] = TRUE;
  98       unset($library['error'], $library['error message']);
  99       libraries_detect_dependencies($library);
 100       $this->verbose('Library:<pre>' . var_export($library, TRUE) . '</pre>');
 101       $this->assertEqual($library['error'], 'incompatible dependency', "libraries_detect_dependencies() detects incompatible version strings: '$version_string' is incompatible with '$version'");
 102     }
 103     // Instead of repeating this assertion for each version string, we just
 104     // re-use the $library variable from the foreach loop.
 105     $error_message = t('The version %dependency_version of the %dependency library is not compatible with the %library library.', array(
 106       '%dependency_version' => $version,
 107       '%dependency' => 'Example dependency',
 108       '%library' => $library['name'],
 109     ));
 110     $this->verbose("Expected:<br>$error_message");
 111     $this->verbose('Actual:<br>' . $library['error message']);
 112     $this->assertEqual($library['error message'], $error_message, 'Correct error message for an incompatible dependency');
 113   }
 114
 115   /**
 116    * Tests libraries_scan_info_files().
 117    */
 118   public function testLibrariesScanInfoFiles() {
 119     $expected = array('example_info_file' => (object) array(
 120       'uri' => drupal_get_path('module', 'libraries') . '/tests/libraries/example_info_file.libraries.info',
 121       'filename' => 'example_info_file.libraries.info',
 122       'name' => 'example_info_file.libraries',
 123     ));
 124     $this->assertEqual(libraries_scan_info_files(), $expected, 'libraries_scan_info_files() correctly finds the example info file.');
 125     $this->verbose('<pre>' . var_export(libraries_scan_info_files(), TRUE) . '</pre>');
 126   }
 127
 128   /**
 129    * Tests libraries_info().
 130    */
 131   public function testLibrariesInfo() {
 132     // Test that modules can provide and alter library information.
 133     $info = libraries_info();
 134     $this->assertTrue(isset($info['example_module']));
 135     $this->verbose('Library:<pre>' . var_export($info['example_module'], TRUE) . '</pre>');
 136     $this->assertEqual($info['example_module']['info type'], 'module');
 137     $this->assertEqual($info['example_module']['module'], 'libraries_test_module');
 138     $this->assertTrue($info['example_module']['module_altered']);
 139
 140     // Test that themes can provide and alter library information.
 141     $this->assertTrue(isset($info['example_theme']));
 142     $this->verbose('Library:<pre>' . var_export($info['example_theme'], TRUE) . '</pre>');
 143     $this->assertEqual($info['example_theme']['info type'], 'theme');
 144     $this->assertEqual($info['example_theme']['theme'], 'libraries_test_theme');
 145     $this->assertTrue($info['example_theme']['theme_altered']);
 146
 147     // Test that library information is found correctly.
 148     $expected = array(
 149       'name' => 'Example files',
 150       'library path' => drupal_get_path('module', 'libraries') . '/tests/libraries/example',
 151       'version' => '1',
 152       'files' => array(
 153         'js' => array('example_1.js' => array()),
 154         'css' => array('example_1.css' => array()),
 155         'php' => array('example_1.php' => array()),
 156       ),
 157       'info type' => 'module',
 158       'module' => 'libraries_test_module',
 159     );
 160     libraries_info_defaults($expected, 'example_files');
 161     $library = libraries_info('example_files');
 162     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 163     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 164     $this->assertEqual($library, $expected, 'Library information is correctly gathered.');
 165
 166     // Test a library specified with an .info file gets detected.
 167     $expected = array(
 168       'name' => 'Example info file',
 169       'info type' => 'info file',
 170       'info file' => drupal_get_path('module', 'libraries') . '/tests/libraries/example_info_file.libraries.info',
 171     );
 172     libraries_info_defaults($expected, 'example_info_file');
 173     $library = libraries_info('example_info_file');
 174     // If this module was downloaded from Drupal.org, the Drupal.org packaging
 175     // system has corrupted the test info file.
 176     // @see http://drupal.org/node/1606606
 177     unset($library['core'], $library['datestamp'], $library['project'], $library['version']);
 178     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 179     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 180     $this->assertEqual($library, $expected, 'Library specified with an .info file found');
 181   }
 182
 183   /**
 184    * Tests libraries_detect().
 185    */
 186   public function testLibrariesDetect() {
 187     // Test missing library.
 188     $library = libraries_detect('example_missing');
 189     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 190     $this->assertEqual($library['error'], 'not found', 'Missing library not found.');
 191     $error_message = t('The %library library could not be found.', array(
 192       '%library' => $library['name'],
 193     ));
 194     $this->assertEqual($library['error message'], $error_message, 'Correct error message for a missing library.');
 195
 196     // Test unknown library version.
 197     $library = libraries_detect('example_undetected_version');
 198     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 199     $this->assertEqual($library['error'], 'not detected', 'Undetected version detected as such.');
 200     $error_message = t('The version of the %library library could not be detected.', array(
 201       '%library' => $library['name'],
 202     ));
 203     $this->assertEqual($library['error message'], $error_message, 'Correct error message for a library with an undetected version.');
 204
 205     // Test unsupported library version.
 206     $library = libraries_detect('example_unsupported_version');
 207     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 208     $this->assertEqual($library['error'], 'not supported', 'Unsupported version detected as such.');
 209     $error_message = t('The installed version %version of the %library library is not supported.', array(
 210       '%version' => $library['version'],
 211       '%library' => $library['name'],
 212     ));
 213     $this->assertEqual($library['error message'], $error_message, 'Correct error message for a library with an unsupported version.');
 214
 215     // Test supported library version.
 216     $library = libraries_detect('example_supported_version');
 217     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 218     $this->assertEqual($library['installed'], TRUE, 'Supported library version found.');
 219
 220     // Test libraries_get_version().
 221     $library = libraries_detect('example_default_version_callback');
 222     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 223     $this->assertEqual($library['version'], '1', 'Expected version returned by default version callback.');
 224
 225     // Test a multiple-parameter version callback.
 226     $library = libraries_detect('example_multiple_parameter_version_callback');
 227     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 228     $this->assertEqual($library['version'], '1', 'Expected version returned by multiple parameter version callback.');
 229
 230     // Test a top-level files property.
 231     $library = libraries_detect('example_files');
 232     $files = array(
 233       'js' => array('example_1.js' => array()),
 234       'css' => array('example_1.css' => array()),
 235       'php' => array('example_1.php' => array()),
 236     );
 237     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 238     $this->assertEqual($library['files'], $files, 'Top-level files property works.');
 239
 240     // Test version-specific library files.
 241     $library = libraries_detect('example_versions');
 242     $files = array(
 243       'js' => array('example_2.js' => array()),
 244       'css' => array('example_2.css' => array()),
 245       'php' => array('example_2.php' => array()),
 246     );
 247     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 248     $this->assertEqual($library['files'], $files, 'Version-specific library files found.');
 249
 250     // Test missing variant.
 251     $library = libraries_detect('example_variant_missing');
 252     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 253     $this->assertEqual($library['variants']['example_variant']['error'], 'not found', 'Missing variant not found');
 254     $error_message = t('The %variant variant of the %library library could not be found.', array(
 255       '%variant' => 'example_variant',
 256       '%library' => 'Example variant missing',
 257     ));
 258     $this->assertEqual($library['variants']['example_variant']['error message'], $error_message, 'Correct error message for a missing variant.');
 259
 260     // Test existing variant.
 261     $library = libraries_detect('example_variant');
 262     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 263     $this->assertEqual($library['variants']['example_variant']['installed'], TRUE, 'Existing variant found.');
 264   }
 265
 266   /**
 267    * Tests libraries_detect() without a $name parameter.
 268    */
 269   public function testLibrariesDetectAll() {
 270     // Test that an array with all library information is returned and that the
 271     // libraries are properly detected.
 272     $libraries = libraries_detect();
 273     $this->verbose('<pre>' . var_export($libraries, TRUE) . '</pre>');
 274     $this->assertEqual($libraries['example_missing']['error'], 'not found');
 275     $this->assertEqual($libraries['example_undetected_version']['error'], 'not detected');
 276     $this->assertEqual($libraries['example_unsupported_version']['error'], 'not supported');
 277     $this->assertEqual($libraries['example_supported_version']['installed'], TRUE);
 278   }
 279
 280   /**
 281    * Tests libraries_load().
 282    */
 283   public function testLibrariesLoad() {
 284     // Test dependencies.
 285     $library = libraries_load('example_dependency_missing');
 286     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 287     $this->assertFalse($library['loaded'], 'Library with missing dependency cannot be loaded');
 288     $library = libraries_load('example_dependency_incompatible');
 289     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 290     $this->assertFalse($library['loaded'], 'Library with incompatible dependency cannot be loaded');
 291     $library = libraries_load('example_dependency_compatible');
 292     $this->verbose('<pre>' . var_export($library, TRUE) . '</pre>');
 293     $this->assertEqual($library['loaded'], 1, 'Library with compatible dependency is loaded');
 294     $loaded = &drupal_static('libraries_load');
 295     $this->verbose('<pre>' . var_export($loaded, TRUE) . '</pre>');
 296     $this->assertEqual($loaded['example_dependency']['loaded'], 1, 'Dependency library is also loaded');
 297
 298     // Test that PHP files that have a local $path variable do not break library
 299     // loading.
 300     // @see _libraries_require_once()
 301     $library = libraries_load('example_path_variable_override');
 302     $this->assertEqual($library['loaded'], 2, 'PHP files cannot break library loading.');
 303   }
 304
 305   /**
 306    * Tests the applying of callbacks.
 307    */
 308   public function testCallbacks() {
 309     $expected = array(
 310       'name' => 'Example callback',
 311       'library path' => drupal_get_path('module', 'libraries') . '/tests/libraries/example',
 312       'version' => '1',
 313       'versions' => array(
 314         '1' => array(
 315           'variants' => array(
 316             'example_variant' => array(
 317               'info callback' => 'not applied',
 318               'pre-detect callback' => 'not applied',
 319               'post-detect callback' => 'not applied',
 320               'pre-dependencies-load callback' => 'not applied',
 321               'pre-load callback' => 'not applied',
 322               'post-load callback' => 'not applied',
 323             ),
 324           ),
 325           'info callback' => 'not applied',
 326           'pre-detect callback' => 'not applied',
 327           'post-detect callback' => 'not applied',
 328           'pre-dependencies-load callback' => 'not applied',
 329           'pre-load callback' => 'not applied',
 330           'post-load callback' => 'not applied',
 331         ),
 332       ),
 333       'variants' => array(
 334         'example_variant' => array(
 335           'info callback' => 'not applied',
 336           'pre-detect callback' => 'not applied',
 337           'post-detect callback' => 'not applied',
 338           'pre-dependencies-load callback' => 'not applied',
 339           'pre-load callback' => 'not applied',
 340           'post-load callback' => 'not applied',
 341         ),
 342       ),
 343       'callbacks' => array(
 344         'info' => array('_libraries_test_module_info_callback'),
 345         'pre-detect' => array('_libraries_test_module_pre_detect_callback'),
 346         'post-detect' => array('_libraries_test_module_post_detect_callback'),
 347         'pre-dependencies-load' => array('_libraries_test_module_pre_dependencies_load_callback'),
 348         'pre-load' => array('_libraries_test_module_pre_load_callback'),
 349         'post-load' => array('_libraries_test_module_post_load_callback'),
 350       ),
 351       'info callback' => 'not applied',
 352       'pre-detect callback' => 'not applied',
 353       'post-detect callback' => 'not applied',
 354       'pre-dependencies-load callback' => 'not applied',
 355       'pre-load callback' => 'not applied',
 356       'post-load callback' => 'not applied',
 357       'info type' => 'module',
 358       'module' => 'libraries_test_module',
 359     );
 360     libraries_info_defaults($expected, 'example_callback');
 361
 362     // Test a callback in the 'info' group.
 363     $expected['info callback'] = 'applied (top-level)';
 364     $expected['versions']['1']['info callback'] = 'applied (version 1)';
 365     $expected['versions']['1']['variants']['example_variant']['info callback'] = 'applied (version 1, variant example_variant)';
 366     $expected['variants']['example_variant']['info callback'] = 'applied (variant example_variant)';
 367     $library = libraries_info('example_callback');
 368     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 369     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 370     $this->assertEqual($library, $expected, 'Prepare callback was applied correctly.');
 371
 372     // Test a callback in the 'pre-detect' and 'post-detect' phases.
 373     // Successfully detected libraries should only contain version information
 374     // for the detected version and thus, be marked as installed.
 375     unset($expected['versions']);
 376     $expected['installed'] = TRUE;
 377     // Additionally, version-specific properties of the detected version are
 378     // supposed to override the corresponding top-level properties.
 379     $expected['info callback'] = 'applied (version 1)';
 380     $expected['variants']['example_variant']['installed'] = TRUE;
 381     $expected['variants']['example_variant']['info callback'] = 'applied (version 1, variant example_variant)';
 382     // Version-overloading takes place after the 'pre-detect' callbacks have
 383     // been applied.
 384     $expected['pre-detect callback'] = 'applied (version 1)';
 385     $expected['post-detect callback'] = 'applied (top-level)';
 386     $expected['variants']['example_variant']['pre-detect callback'] = 'applied (version 1, variant example_variant)';
 387     $expected['variants']['example_variant']['post-detect callback'] = 'applied (variant example_variant)';
 388     $library = libraries_detect('example_callback');
 389     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 390     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 391     $this->assertEqual($library, $expected, 'Detect callback was applied correctly.');
 392
 393     // Test a callback in the 'pre-dependencies-load', 'pre-load' and
 394     // 'post-load' phases.
 395     // Successfully loaded libraries should only contain information about the
 396     // already loaded variant.
 397     unset($expected['variants']);
 398     $expected['loaded'] = 0;
 399     $expected['pre-dependencies-load callback'] = 'applied (top-level)';
 400     $expected['pre-load callback'] = 'applied (top-level)';
 401     $expected['post-load callback'] = 'applied (top-level)';
 402     $library = libraries_load('example_callback');
 403     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 404     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 405     $this->assertEqual($library, $expected, 'Pre-load and post-load callbacks were applied correctly.');
 406     // This is not recommended usually and is only used for testing purposes.
 407     drupal_static_reset('libraries_load');
 408     // Successfully loaded library variants are supposed to contain the specific
 409     // variant information only.
 410     $expected['info callback'] = 'applied (version 1, variant example_variant)';
 411     $expected['pre-detect callback'] = 'applied (version 1, variant example_variant)';
 412     $expected['post-detect callback'] = 'applied (variant example_variant)';
 413     $library = libraries_load('example_callback', 'example_variant');
 414     $this->verbose('Expected:<pre>' . var_export($expected, TRUE) . '</pre>');
 415     $this->verbose('Actual:<pre>' . var_export($library, TRUE) . '</pre>');
 416     $this->assertEqual($library, $expected, 'Pre-detect and post-detect callbacks were applied correctly to a variant.');
 417   }
 418
 419   /**
 420    * Tests that library files are properly added to the page output.
 421    *
 422    * We check for JavaScript and CSS files directly in the DOM and add a list of
 423    * included PHP files manually to the page output.
 424    *
 425    * @see _libraries_test_module_load()
 426    */
 427   public function testLibrariesOutput() {
 428     // Test loading of a simple library with a top-level files property.
 429     $this->drupalGet('libraries-test-module/files');
 430     $this->assertLibraryFiles('example_1', 'File loading');
 431
 432     // Test loading of integration files.
 433     $this->drupalGet('libraries-test-module/module-integration-files');
 434     $this->assertRaw('libraries_test_module.js', 'Integration file loading: libraries_test_module.js found');
 435     $this->assertRaw('libraries_test_module.css', 'Integration file loading: libraries_test_module.css found');
 436     $this->assertRaw('libraries_test_module.inc', 'Integration file loading: libraries_test_module.inc found');
 437     $this->drupalGet('libraries-test-module/theme-integration-files');
 438     $this->assertRaw('libraries_test_theme.js', 'Integration file loading: libraries_test_theme.js found');
 439     $this->assertRaw('libraries_test_theme.css', 'Integration file loading: libraries_test_theme.css found');
 440     $this->assertRaw('libraries_test_theme.inc', 'Integration file loading: libraries_test_theme.inc found');
 441
 442     // Test loading of post-load integration files.
 443     $this->drupalGet('libraries-test-module/module-integration-files-post-load');
 444     // If the files were not loaded correctly, a fatal error occurs.
 445     $this->assertResponse(200, 'Post-load integration files are loaded correctly.');
 446
 447     // Test version overloading.
 448     $this->drupalGet('libraries-test-module/versions');
 449     $this->assertLibraryFiles('example_2', 'Version overloading');
 450
 451     // Test variant loading.
 452     $this->drupalGet('libraries-test-module/variant');
 453     $this->assertLibraryFiles('example_3', 'Variant loading');
 454
 455     // Test version overloading and variant loading.
 456     $this->drupalGet('libraries-test-module/versions-and-variants');
 457     $this->assertLibraryFiles('example_4', 'Concurrent version and variant overloading');
 458
 459     // Test caching.
 460     variable_set('libraries_test_module_cache', TRUE);
 461     cache_clear_all('example_callback', 'cache_libraries');
 462     // When the library information is not cached, all callback groups should be
 463     // invoked.
 464     $this->drupalGet('libraries-test-module/cache');
 465     $this->assertRaw('The <em>info</em> callback group was invoked.', 'Info callback invoked for uncached libraries.');
 466     $this->assertRaw('The <em>pre-detect</em> callback group was invoked.', 'Pre-detect callback invoked for uncached libraries.');
 467     $this->assertRaw('The <em>post-detect</em> callback group was invoked.', 'Post-detect callback invoked for uncached libraries.');
 468     $this->assertRaw('The <em>pre-load</em> callback group was invoked.', 'Pre-load callback invoked for uncached libraries.');
 469     $this->assertRaw('The <em>post-load</em> callback group was invoked.', 'Post-load callback invoked for uncached libraries.');
 470     // When the library information is cached only the 'pre-load' and
 471     // 'post-load' callback groups should be invoked.
 472     $this->drupalGet('libraries-test-module/cache');
 473     $this->assertNoRaw('The <em>info</em> callback group was not invoked.', 'Info callback not invoked for cached libraries.');
 474     $this->assertNoRaw('The <em>pre-detect</em> callback group was not invoked.', 'Pre-detect callback not invoked for cached libraries.');
 475     $this->assertNoRaw('The <em>post-detect</em> callback group was not invoked.', 'Post-detect callback not invoked for cached libraries.');
 476     $this->assertRaw('The <em>pre-load</em> callback group was invoked.', 'Pre-load callback invoked for cached libraries.');
 477     $this->assertRaw('The <em>post-load</em> callback group was invoked.', 'Post-load callback invoked for cached libraries.');
 478     variable_set('libraries_test_module_cache', FALSE);
 479   }
 480
 481   /**
 482    * Helper function to assert that a library was correctly loaded.
 483    *
 484    * Asserts that all the correct files were loaded and all the incorrect ones
 485    * were not.
 486    *
 487    * @param $name
 488    *   The name of the files that should be loaded. The current testing system
 489    *   knows of 'example_1', 'example_2', 'example_3' and 'example_4'. Each name
 490    *   has an associated JavaScript, CSS and PHP file that will be asserted. All
 491    *   other files will be asserted to not be loaded. See
 492    *   tests/example/README.txt for more information on how the loading of the
 493    *   files is tested.
 494    * @param $label
 495    *   (optional) A label to prepend to the assertion messages, to make them
 496    *   less ambiguous.
 497    * @param $extensions
 498    *   (optional) The expected file extensions of $name. Defaults to
 499    *   array('js', 'css', 'php').
 500    */
 501   public function assertLibraryFiles($name, $label = '', $extensions = array('js', 'css', 'php')) {
 502     $label = ($label !== '' ? "$label: " : '');
 503
 504     // Test that the wrong files are not loaded...
 505     $names = array(
 506       'example_1' => FALSE,
 507       'example_2' => FALSE,
 508       'example_3' => FALSE,
 509       'example_4' => FALSE,
 510     );
 511     // ...and the correct ones are.
 512     $names[$name] = TRUE;
 513
 514     // Test for the specific HTML that the different file types appear as in the
 515     // DOM.
 516     $html = array(
 517       'js' => array('<script type="text/javascript" src="', '"></script>'),
 518       'css' => array('@import url("', '");'),
 519       // PHP files do not get added to the DOM directly.
 520       // @see _libraries_test_load()
 521       'php' => array('<li>', '</li>'),
 522     );
 523
 524     foreach ($names as $name => $expected) {
 525       foreach ($extensions as $extension) {
 526         $filepath = drupal_get_path('module', 'libraries') . "/tests/libraries/example/$name.$extension";
 527         // JavaScript and CSS files appear as full URLs and with an appended
 528         // query string.
 529         if (in_array($extension, array('js', 'css'))) {
 530           $filepath = url('', array('absolute' => TRUE)) . $filepath . '?' . variable_get('css_js_query_string');
 531         }
 532         $raw = $html[$extension][0] . $filepath . $html[$extension][1];
 533         if ($expected) {
 534           $this->assertRaw($raw, "$label$name.$extension found.");
 535         }
 536         else {
 537           $this->assertNoRaw($raw, "$label$name.$extension not found.");
 538         }
 539       }
 540     }
 541   }
 542
 543 }