class FormGroupingElementsTest

class FormGroupingElementsTest extends WebDriverTestBase {
    
    /**
     * Required modules.
     *
     * @var array
     */
    protected static $modules = [
        'form_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $account = $this->drupalCreateUser();
        $this->drupalLogin($account);
    }
    
    /**
     * Tests that vertical tab children become visible.
     *
     * Makes sure that a child element of a vertical tab that is not visible,
     * becomes visible when the tab is clicked, a fragment link to the child is
     * clicked or when the URI fragment pointing to that child changes.
     */
    public function testVerticalTabChildVisibility() : void {
        $session = $this->getSession();
        $web_assert = $this->assertSession();
        // Request the group vertical tabs testing page with a fragment identifier
        // to the second element.
        $this->drupalGet('form-test/group-vertical-tabs', [
            'fragment' => 'edit-element-2',
        ]);
        $page = $session->getPage();
        $tab_link_1 = $page->find('css', '.vertical-tabs__menu-item > a');
        $child_1_selector = '#edit-element';
        $child_1 = $page->find('css', $child_1_selector);
        $child_2_selector = '#edit-element-2';
        $child_2 = $page->find('css', $child_2_selector);
        // Assert that the child in the second vertical tab becomes visible.
        // It should be visible after initial load due to the fragment in the URI.
        $this->assertTrue($child_2->isVisible(), 'Child 2 is visible due to a URI fragment');
        // Click on a fragment link pointing to an invisible child inside an
        // inactive vertical tab.
        $session->executeScript("jQuery('<a href=\"{$child_1_selector}\"></a>').insertAfter('h1')[0].click()");
        // Assert that the child in the first vertical tab becomes visible.
        $web_assert->waitForElementVisible('css', $child_1_selector, 50);
        // Trigger a URI fragment change (hashchange) to show the second vertical
        // tab again.
        $session->executeScript("location.replace('{$child_2_selector}')");
        // Assert that the child in the second vertical tab becomes visible again.
        $web_assert->waitForElementVisible('css', $child_2_selector, 50);
        $tab_link_1->click();
        // Assert that the child in the first vertical tab is visible again after
        // a click on the first tab.
        $this->assertTrue($child_1->isVisible(), 'Child 1 is visible after clicking the parent tab');
    }
    
    /**
     * 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.
     */
    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'));
    }
    
    /**
     * Confirms tabs containing a field with a validation error are open.
     */
    public function testVerticalTabValidationVisibility() : void {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->drupalGet('form-test/group-vertical-tabs');
        $page->clickLink('Second group element');
        $input_field = $assert_session->waitForField('element_2');
        $this->assertNotNull($input_field);
        // Enter a value that will trigger a validation error.
        $input_field->setValue('bad');
        // Switch to a tab that does not have the error-causing field.
        $page->clickLink('First group element');
        $this->assertNotNull($assert_session->waitForElementVisible('css', '#edit-meta'));
        // Submit the form.
        $page->pressButton('Save');
        // Confirm there is an error.
        $assert_session->waitForText('there was an error');
        // Confirm the tab containing the field with error is open.
        $this->assertNotNull($assert_session->waitForElementVisible('css', '[name="element_2"].error'));
    }
    
    /**
     * Tests form submit with a required field in closed details element.
     */
    public function testDetailsContainsRequiredTextfield() : void {
        $this->drupalGet('form_test/details-contains-required-textfield');
        $details = $this->assertSession()
            ->elementExists('css', 'details[data-drupal-selector="edit-meta"]');
        // Make sure details element is not open at the beginning.
        $this->assertFalse($details->hasAttribute('open'));
        $textfield = $this->assertSession()
            ->elementExists('css', 'input[name="required_textfield_in_details"]');
        // The text field inside the details element is not visible too.
        $this->assertFalse($textfield->isVisible(), 'Text field is not visible');
        // Submit the form with invalid data in the required fields.
        $this->assertSession()
            ->elementExists('css', 'input[data-drupal-selector="edit-submit"]')
            ->click();
        // Confirm the required field is visible.
        $this->assertTrue($textfield->isVisible(), 'Text field is visible');
    }
    
    /**
     * Tests required field in closed details element with ajax form.
     */
    public function testDetailsContainsRequiredTextfieldAjaxForm() : void {
        $this->drupalGet('form_test/details-contains-required-textfield/true');
        $assert_session = $this->assertSession();
        $textfield = $assert_session->elementExists('css', 'input[name="required_textfield_in_details"]');
        // Submit the ajax form to open the details element at the first time.
        $assert_session->elementExists('css', 'input[value="Submit Ajax"]')
            ->click();
        $assert_session->waitForElementVisible('css', 'input[name="required_textfield_in_details"]');
        // Close the details element.
        $assert_session->elementExists('css', 'form summary')
            ->click();
        // Submit the form with invalid data in the required fields without ajax.
        $assert_session->elementExists('css', 'input[data-drupal-selector="edit-submit"]')
            ->click();
        // Confirm the required field is visible.
        $this->assertTrue($textfield->isVisible(), 'Text field is visible');
    }

}