function AttachedAssetsTest::testAggregation

Integration test for CSS/JS aggregation.

File

core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php, line 179

Class

AttachedAssetsTest

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

Namespace

Code

public function testAggregation() : void {
    $build['#attached']['library'][] = 'core/drupal.timezone';
    $build['#attached']['library'][] = 'core/drupal.vertical-tabs';
    $assets = AttachedAssets::createFromRenderArray($build);
    $this->assertCount(1, $this->assetResolver
        ->getCssAssets($assets, TRUE, \Drupal::languageManager()->getCurrentLanguage()), 'There is a sole aggregated CSS asset.');
    [
        $header_js,
        $footer_js,
    ] = $this->assetResolver
        ->getJsAssets($assets, TRUE, \Drupal::languageManager()->getCurrentLanguage());
    $this->assertEquals([], \Drupal::service('asset.js.collection_renderer')->render($header_js), 'There are 0 JavaScript assets in the header.');
    $rendered_footer_js = \Drupal::service('asset.js.collection_renderer')->render($footer_js);
    $this->assertCount(2, $rendered_footer_js, 'There are 2 JavaScript assets in the footer.');
    $this->assertEquals('drupal-settings-json', $rendered_footer_js[0]['#attributes']['data-drupal-selector'], 'The first of the two JavaScript assets in the footer has drupal settings.');
    $this->assertStringStartsWith(base_path(), $rendered_footer_js[1]['#attributes']['src'], 'The second of the two JavaScript assets in the footer has the sole aggregated JavaScript asset.');
}