function FormGroupingElementsTest::testDetailsChildVisibility

Tests that details element children become visible.

Makes sure that a child element of a details element that is not visible, becomes visible when a fragment link to the child is clicked or when the URI fragment pointing to that child changes.

File

core/tests/Drupal/FunctionalJavascriptTests/Core/Form/FormGroupingElementsTest.php, line 95

Class

FormGroupingElementsTest

Tests for form grouping elements.

Namespace

Code

public function testDetailsChildVisibility() : void {
  $session = $this->getSession();
  $web_assert = $this->assertSession();
  // Store reusable JavaScript code to remove the current URI fragment and
  // close all details.
  $reset_js = "location.replace('#'); jQuery('details').removeAttr('open')";
  // Request the group details testing page.
  $this->drupalGet('form-test/group-details');
  $page = $session->getPage();
  $session->executeScript($reset_js);
  $child_selector = '#edit-element';
  $child = $page->find('css', $child_selector);
  // Assert that the child is not visible.
  $this->assertFalse($child->isVisible(), 'Child is not visible');
  // Trigger a URI fragment change (hashchange) to open all parent details
  // elements of the child.
  $session->executeScript("location.replace('{$child_selector}')");
  // Assert that the child becomes visible again after a hash change.
  $web_assert->waitForElementVisible('css', $child_selector, 50);
  $session->executeScript($reset_js);
  // Click on a fragment link pointing to an invisible child inside a closed
  // details element.
  $session->executeScript("jQuery('<a href=\"{$child_selector}\"></a>').insertAfter('h1')[0].click()");
  // Assert that the child is visible again after a fragment link click.
  $web_assert->waitForElementVisible('css', $child_selector, 50);
  // Find the summary belonging to the closest details element.
  $summary = $page->find('css', '#edit-meta > summary');
  // Assert that both aria-expanded and aria-pressed are true.
  $this->assertEquals('true', $summary->getAttribute('aria-expanded'));
}