function AttachedAssetsTest::testRenderOrder

Tests JavaScript and CSS asset ordering.

File

core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php, line 278

Class

AttachedAssetsTest

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

Namespace

Code

public function testRenderOrder() : void {
  $build['#attached']['library'][] = 'common_test/order';
  $assets = AttachedAssets::createFromRenderArray($build);
  // Construct the expected result from the regex.
  $expected_order_js = [
    "-8_1",
    "-8_2",
    "-8_3",
    "-8_4",
    // The external script.
"-5_1",
    "-3_1",
    "-3_2",
    "0_1",
    "0_2",
    "0_3",
  ];
  // Retrieve the rendered JavaScript and test against the regex.
  $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);
  $matches = [];
  if (preg_match_all('/weight_([-0-9]+_[0-9]+)/', $rendered_js, $matches)) {
    $result = $matches[1];
  }
  else {
    $result = [];
  }
  $this->assertSame($expected_order_js, $result, 'JavaScript is added in the expected weight order.');
  // Construct the expected result from the regex.
  $expected_order_css = [
    // Base.
'base_weight_-101_1',
    'base_weight_-8_1',
    'layout_weight_-101_1',
    'base_weight_0_1',
    'base_weight_0_2',
    // Layout.
'layout_weight_-8_1',
    'component_weight_-101_1',
    'layout_weight_0_1',
    'layout_weight_0_2',
    // Component.
'component_weight_-8_1',
    'state_weight_-101_1',
    'component_weight_0_1',
    'component_weight_0_2',
    // State.
'state_weight_-8_1',
    'theme_weight_-101_1',
    'state_weight_0_1',
    'state_weight_0_2',
    // Theme.
'theme_weight_-8_1',
    'theme_weight_0_1',
    'theme_weight_0_2',
  ];
  // Retrieve the rendered CSS and test against the regex.
  $css = $this->assetResolver
    ->getCssAssets($assets, FALSE, \Drupal::languageManager()->getCurrentLanguage());
  $css_render_array = \Drupal::service('asset.css.collection_renderer')->render($css);
  $rendered_css = (string) $this->renderer
    ->renderInIsolation($css_render_array);
  $matches = [];
  if (preg_match_all('/([a-z]+)_weight_([-0-9]+_[0-9]+)/', $rendered_css, $matches)) {
    $result = $matches[0];
  }
  else {
    $result = [];
  }
  $this->assertSame($expected_order_css, $result, 'CSS is added in the expected weight order.');
}