public function FrameworkTest::testLazyLoadOverriddenCSS in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/tests/src/FunctionalJavascript/FrameworkTest.php \Drupal\Tests\system\FunctionalJavascript\FrameworkTest::testLazyLoadOverriddenCSS()

Tests that overridden CSS files are not added during lazy load.

File

core/modules/system/tests/src/FunctionalJavascript/FrameworkTest.php, line 103

Class

FrameworkTest

Tests the off-canvas dialog functionality.

Namespace

Drupal\Tests\system\FunctionalJavascript

Code

public function testLazyLoadOverriddenCSS() {

  // The test theme overrides js.module.css without an implementation,
  // thereby removing it.
  \Drupal::service('theme_installer')
    ->install([
    'test_theme',
  ]);
  $this
    ->config('system.theme')
    ->set('default', 'test_theme')
    ->save();

  // This gets the form, and does an Ajax submission on it.
  $this
    ->drupalGet('ajax_forms_test_lazy_load_form');
  $page = $this
    ->getSession()
    ->getPage();
  $assert = $this
    ->assertSession();
  $page
    ->checkField('add_files');
  $page
    ->pressButton('Submit');
  $assert
    ->assertWaitOnAjaxRequest();

  // Verify that the resulting HTML does not load the overridden CSS file.
  // We add a "?" to the assertion, because drupalSettings may include
  // information about the file; we only really care about whether it appears
  // in a LINK or STYLE tag, for which Drupal always adds a query string for
  // cache control.
  $assert
    ->responseNotContains('js.module.css?');
}