function AttachedAssetsTest::testLibraryAlter

Adds a JavaScript library to the page and alters it.

See also

common_test_library_info_alter()

File

core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php, line 400

Class

AttachedAssetsTest

Tests #attached assets: attached asset libraries and JavaScript settings.

Namespace

Code

public function testLibraryAlter() : void {
    // Verify that common_test altered the title of loadjs.
    
    /** @var \Drupal\Core\Asset\LibraryDiscoveryInterface $library_discovery */
    $library_discovery = \Drupal::service('library.discovery');
    $library = $library_discovery->getLibraryByName('core', 'loadjs');
    $this->assertEquals('0.0', $library['version'], 'Registered libraries were altered.');
    // common_test_library_info_alter() also added a dependency on jQuery Form.
    $build['#attached']['library'][] = 'core/loadjs';
    $assets = AttachedAssets::createFromRenderArray($build);
    $js = $this->assetResolver
        ->getJsAssets($assets, FALSE, \Drupal::languageManager()->getCurrentLanguage())[1];
    $js_render_array = \Drupal::service('asset.js.collection_renderer')->render($js);
    $rendered_js = (string) $this->renderer
        ->renderInIsolation($js_render_array);
    $this->assertStringContainsString('core/misc/jquery.form.js', (string) $rendered_js, 'Altered library dependencies are added to the page.');
}