class FormTest in Drupal 10

Same name in this branch

10 core/modules/field/tests/src/Functional/FormTest.php \Drupal\Tests\field\Functional\FormTest
10 core/modules/system/tests/src/Functional/Form/FormTest.php \Drupal\Tests\system\Functional\Form\FormTest

Same name and namespace in other branches

8 core/modules/system/tests/src/Functional/Form/FormTest.php \Drupal\Tests\system\Functional\Form\FormTest
9 core/modules/system/tests/src/Functional/Form/FormTest.php \Drupal\Tests\system\Functional\Form\FormTest

Tests various form element validation mechanisms.

@group Form

Hierarchy

class \Drupal\Tests\BrowserTestBase extends \PHPUnit\Framework\TestCase uses \Drupal\Tests\PhpUnitCompatibilityTrait, \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, FunctionalTestSetupTrait, TestSetupTrait, BlockCreationTrait, ConfigTestTrait, ExtensionListTestTrait, ContentTypeCreationTrait, NodeCreationTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings, UiHelperTrait, UserCreationTrait, XdebugRequestTrait
- class \Drupal\Tests\system\Functional\Form\FormTest

Expanded class hierarchy of FormTest

File

core/modules/system/tests/src/Functional/Form/FormTest.php, line 22

Namespace

Drupal\Tests\system\Functional\Form

View source

class FormTest extends BrowserTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'filter',
    'form_test',
    'file',
    'datetime',
  ];

  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'classy';
  protected function setUp() : void {
    parent::setUp();
    $filtered_html_format = FilterFormat::create([
      'format' => 'filtered_html',
      'name' => 'Filtered HTML',
    ]);
    $filtered_html_format
      ->save();
    $filtered_html_permission = $filtered_html_format
      ->getPermissionName();
    user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, [
      $filtered_html_permission,
    ]);
  }

  /**
   * Check several empty values for required forms elements.
   *
   * Carriage returns, tabs, spaces, and unchecked checkbox elements are not
   * valid content for a required field.
   *
   * If the form field is found in $form_state->getErrors() then the test pass.
   */
  public function testRequiredFields() {

    // Originates from https://www.drupal.org/node/117748.
    // Sets of empty strings and arrays.
    $empty_strings = [
      '""' => "",
      '"\\n"' => "\n",
      '" "' => " ",
      '"\\t"' => "\t",
      '" \\n\\t "' => " \n\t ",
      '"\\n\\n\\n\\n\\n"' => "\n\n\n\n\n",
    ];
    $empty_arrays = [
      'array()' => [],
    ];
    $empty_checkbox = [
      NULL,
    ];
    $elements['textfield']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'textfield',
    ];
    $elements['textfield']['empty_values'] = $empty_strings;
    $elements['telephone']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'tel',
    ];
    $elements['telephone']['empty_values'] = $empty_strings;
    $elements['url']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'url',
    ];
    $elements['url']['empty_values'] = $empty_strings;
    $elements['search']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'search',
    ];
    $elements['search']['empty_values'] = $empty_strings;
    $elements['password']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'password',
    ];
    $elements['password']['empty_values'] = $empty_strings;
    $elements['password_confirm']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'password_confirm',
    ];

    // Provide empty values for both password fields.
    foreach ($empty_strings as $key => $value) {
      $elements['password_confirm']['empty_values'][$key] = [
        'pass1' => $value,
        'pass2' => $value,
      ];
    }
    $elements['textarea']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'textarea',
    ];
    $elements['textarea']['empty_values'] = $empty_strings;
    $elements['radios']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'radios',
      '#options' => [
        '' => 'None',
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
      ],
    ];
    $elements['radios']['empty_values'] = $empty_arrays;
    $elements['checkbox']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'checkbox',
      '#required' => TRUE,
    ];
    $elements['checkbox']['empty_values'] = $empty_checkbox;
    $elements['checkboxes']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'checkboxes',
      '#options' => [
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
      ],
    ];
    $elements['checkboxes']['empty_values'] = $empty_arrays;
    $elements['select']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'select',
      '#options' => [
        '' => 'None',
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
        $this
          ->randomMachineName(),
      ],
    ];
    $elements['select']['empty_values'] = $empty_strings;
    $elements['file']['element'] = [
      '#title' => $this
        ->randomMachineName(),
      '#type' => 'file',
    ];
    $elements['file']['empty_values'] = $empty_strings;

    // Regular expression to find the expected marker on required elements.
    $required_marker_preg = '@<.*?class=".*?js-form-required.*form-required.*?">@';

    // Go through all the elements and all the empty values for them.
    foreach ($elements as $type => $data) {
      foreach ($data['empty_values'] as $key => $empty) {
        foreach ([
          TRUE,
          FALSE,
        ] as $required) {
          $form_id = $this
            ->randomMachineName();
          $form = [];
          $form_state = new FormState();
          $form['op'] = [
            '#type' => 'submit',
            '#value' => 'Submit',
          ];
          $element = $data['element']['#title'];
          $form[$element] = $data['element'];
          $form[$element]['#required'] = $required;
          $user_input[$element] = $empty;
          $user_input['form_id'] = $form_id;
          $form_state
            ->setUserInput($user_input);
          $form_state
            ->setFormObject(new StubForm($form_id, $form));
          $form_state
            ->setMethod('POST');

          // The form token CSRF protection should not interfere with this test,
          // so we bypass it by setting the token to FALSE.
          $form['#token'] = FALSE;
          \Drupal::formBuilder()
            ->prepareForm($form_id, $form, $form_state);
          \Drupal::formBuilder()
            ->processForm($form_id, $form, $form_state);
          $errors = $form_state
            ->getErrors();
          $form_output = \Drupal::service('renderer')
            ->renderRoot($form);
          if ($required) {

            // Make sure we have a form error for this element.
            $this
              ->assertTrue(isset($errors[$element]), "Check empty({$key}) '{$type}' field '{$element}'");
            if (!empty($form_output)) {

              // Make sure the form element is marked as required.
              $this
                ->assertMatchesRegularExpression($required_marker_preg, (string) $form_output, "Required '{$type}' field is marked as required");
            }
          }
          else {
            if (!empty($form_output)) {

              // Make sure the form element is *not* marked as required.
              $this
                ->assertDoesNotMatchRegularExpression($required_marker_preg, (string) $form_output, "Optional '{$type}' field is not marked as required");
            }
            if ($type == 'select') {

              // Select elements are going to have validation errors with empty
              // input, since those are illegal choices. Just make sure the
              // error is not "field is required".
              $this
                ->assertTrue(empty($errors[$element]) || strpos('field is required', (string) $errors[$element]) === FALSE, "Optional '{$type}' field '{$element}' is not treated as a required element");
            }
            else {

              // Make sure there is *no* form error for this element. We're
              // not using assertEmpty() because the array key might not exist.
              $this
                ->assertArrayNotHasKey($element, $errors, "Optional '{$type}' field '{$element}' should have no errors with empty input.");
            }
          }
        }
      }
    }

    // Clear the expected form error messages so they don't appear as exceptions.
    \Drupal::messenger()
      ->deleteAll();
  }

  /**
   * Tests validation for required checkbox, select, and radio elements.
   *
   * Submits a test form containing several types of form elements. The form
   * is submitted twice, first without values for required fields and then
   * with values. Each submission is checked for relevant error messages.
   *
   * @see \Drupal\form_test\Form\FormTestValidateRequiredForm
   */
  public function testRequiredCheckboxesRadio() {
    $form = \Drupal::formBuilder()
      ->getForm('\\Drupal\\form_test\\Form\\FormTestValidateRequiredForm');

    // Attempt to submit the form with no required fields set.
    $edit = [];
    $this
      ->drupalGet('form-test/validate-required');
    $this
      ->submitForm($edit, 'Submit');

    // The only error messages that should appear are the relevant 'required'
    // messages for each field.
    $expected = [];
    foreach ([
      'textfield',
      'checkboxes',
      'select',
      'radios',
    ] as $key) {
      if (isset($form[$key]['#required_error'])) {
        $expected[] = $form[$key]['#required_error'];
      }
      elseif (isset($form[$key]['#form_test_required_error'])) {
        $expected[] = $form[$key]['#form_test_required_error'];
      }
      else {
        $expected[] = $form[$key]['#title'] . ' field is required.';
      }
    }

    // Check the page for error messages.
    $errors = $this
      ->xpath('//div[contains(@class, "error")]//li');
    foreach ($errors as $error) {
      $expected_key = array_search($error
        ->getText(), $expected);

      // If the error message is not one of the expected messages, fail.
      if ($expected_key === FALSE) {
        $this
          ->fail(new FormattableMarkup("Unexpected error message: @error", [
          '@error' => $error[0],
        ]));
      }
      else {
        unset($expected[$expected_key]);
      }
    }

    // Fail if any expected messages were not found.
    foreach ($expected as $not_found) {
      $this
        ->fail(new FormattableMarkup("Found error message: @error", [
        '@error' => $not_found,
      ]));
    }

    // Verify that input elements are still empty.
    $this
      ->assertSession()
      ->fieldValueEquals('textfield', '');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-checkboxes-foo');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-checkboxes-bar');
    $this
      ->assertTrue($this
      ->assertSession()
      ->optionExists('edit-select', '')
      ->isSelected());
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-foo');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-bar');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-optional-foo');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-optional-bar');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-optional-default-value-false-foo');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-optional-default-value-false-bar');

    // Submit again with required fields set and verify that there are no
    // error messages.
    $edit = [
      'textfield' => $this
        ->randomString(),
      'checkboxes[foo]' => TRUE,
      'select' => 'foo',
      'radios' => 'bar',
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that no error message is displayed when all required fields are
    // filled.
    $this
      ->assertSession()
      ->elementNotExists('xpath', '//div[contains(@class, "error")]');
    $this
      ->assertSession()
      ->pageTextContains("The form_test_validate_required_form form was submitted successfully.");
  }

  /**
   * Tests that input is retained for safe elements even with an invalid token.
   *
   * Submits a test form containing several types of form elements.
   */
  public function testInputWithInvalidToken() {

    // We need to be logged in to have CSRF tokens.
    $account = $this
      ->createUser();
    $this
      ->drupalLogin($account);

    // Submit again with required fields set but an invalid form token and
    // verify that all the values are retained.
    $this
      ->drupalGet(Url::fromRoute('form_test.validate_required'));
    $this
      ->assertSession()
      ->elementExists('css', 'input[name="form_token"]')
      ->setValue('invalid token');
    $random_string = $this
      ->randomString();
    $edit = [
      'textfield' => $random_string,
      'checkboxes[bar]' => TRUE,
      'select' => 'bar',
      'radios' => 'foo',
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that error message is displayed with invalid token even when
    // required fields are filled.
    $this
      ->assertSession()
      ->elementExists('xpath', '//div[contains(@class, "error")]');
    $assert = $this
      ->assertSession();
    $element = $assert
      ->fieldExists('textfield');
    $this
      ->assertEmpty($element
      ->getValue());
    $assert
      ->responseNotContains($random_string);
    $this
      ->assertSession()
      ->pageTextContains('The form has become outdated.');

    // Ensure that we don't use the posted values.
    $this
      ->assertSession()
      ->fieldValueEquals('textfield', '');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-checkboxes-foo');
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-checkboxes-bar');
    $this
      ->assertTrue($this
      ->assertSession()
      ->optionExists('edit-select', '')
      ->isSelected());
    $this
      ->assertSession()
      ->checkboxNotChecked('edit-radios-foo');

    // Check another form that has a textarea input.
    $this
      ->drupalGet(Url::fromRoute('form_test.required'));
    $this
      ->assertSession()
      ->elementExists('css', 'input[name="form_token"]')
      ->setValue('invalid token');
    $edit = [
      'textfield' => $this
        ->randomString(),
      'textarea' => $this
        ->randomString() . "\n",
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that the error message is displayed with invalid token even when
    // required fields are filled.
    $this
      ->assertSession()
      ->elementExists('xpath', '//div[contains(@class, "error")]');
    $this
      ->assertSession()
      ->pageTextContains('The form has become outdated.');
    $this
      ->assertSession()
      ->fieldValueEquals('textfield', '');
    $this
      ->assertSession()
      ->fieldValueEquals('textarea', '');

    // Check another form that has a number input.
    $this
      ->drupalGet(Url::fromRoute('form_test.number'));
    $this
      ->assertSession()
      ->elementExists('css', 'input[name="form_token"]')
      ->setValue('invalid token');
    $edit = [
      // We choose a random value which is higher than the default value,
      // so we don't accidentally generate the default value.
      'integer_step' => mt_rand(6, 100),
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that the error message is displayed with invalid token even when
    // required fields are filled.'
    $this
      ->assertSession()
      ->elementExists('xpath', '//div[contains(@class, "error")]');
    $this
      ->assertSession()
      ->pageTextContains('The form has become outdated.');
    $this
      ->assertSession()
      ->fieldValueEquals('integer_step', 5);

    // Check a form with a Url field
    $this
      ->drupalGet(Url::fromRoute('form_test.url'));
    $this
      ->assertSession()
      ->elementExists('css', 'input[name="form_token"]')
      ->setValue('invalid token');
    $edit = [
      'url' => $this
        ->randomString(),
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that the error message is displayed with invalid token even when
    // required fields are filled.
    $this
      ->assertSession()
      ->elementExists('xpath', '//div[contains(@class, "error")]');
    $this
      ->assertSession()
      ->pageTextContains('The form has become outdated.');
    $this
      ->assertSession()
      ->fieldValueEquals('url', '');
  }

  /**
   * CSRF tokens for GET forms should not be added by default.
   */
  public function testGetFormsCsrfToken() {

    // We need to be logged in to have CSRF tokens.
    $account = $this
      ->createUser();
    $this
      ->drupalLogin($account);
    $this
      ->drupalGet(Url::fromRoute('form_test.get_form'));
    $this
      ->assertSession()
      ->responseNotContains('form_token');
  }

  /**
   * Tests validation for required textfield element without title.
   *
   * Submits a test form containing a textfield form element without title.
   * The form is submitted twice, first without value for the required field
   * and then with value. Each submission is checked for relevant error
   * messages.
   *
   * @see \Drupal\form_test\Form\FormTestValidateRequiredNoTitleForm
   */
  public function testRequiredTextfieldNoTitle() {

    // Attempt to submit the form with no required field set.
    $edit = [];
    $this
      ->drupalGet('form-test/validate-required-no-title');
    $this
      ->submitForm($edit, 'Submit');
    $this
      ->assertSession()
      ->pageTextNotContains("The form_test_validate_required_form_no_title form was submitted successfully.");

    // Check the page for the error class on the textfield.
    $this
      ->assertSession()
      ->elementExists('xpath', '//input[contains(@class, "error")]');

    // Check the page for the aria-invalid attribute on the textfield.
    $this
      ->assertSession()
      ->elementExists('xpath', '//input[contains(@aria-invalid, "true")]');

    // Submit again with required fields set and verify that there are no
    // error messages.
    $edit = [
      'textfield' => $this
        ->randomString(),
    ];
    $this
      ->submitForm($edit, 'Submit');

    // Verify that no error input form element class is present.
    $this
      ->assertSession()
      ->elementNotExists('xpath', '//input[contains(@class, "error")]');
    $this
      ->assertSession()
      ->pageTextContains("The form_test_validate_required_form_no_title form was submitted successfully.");
  }

  /**
   * Tests default value handling for checkboxes.
   *
   * @see _form_test_checkbox()
   */
  public function testCheckboxProcessing() {

    // First, try to submit without the required checkbox.
    $edit = [];
    $this
      ->drupalGet('form-test/checkbox');
    $this
      ->submitForm($edit, 'Submit');
    $this
      ->assertSession()
      ->pageTextContains("required_checkbox field is required.");

    // Now try to submit the form correctly.
    $this
      ->submitForm([
      'required_checkbox' => 1,
    ], 'Submit');
    $values = Json::decode($this
      ->getSession()
      ->getPage()
      ->getContent());
    $expected_values = [
      'disabled_checkbox_on' => 'disabled_checkbox_on',
      'disabled_checkbox_off' => 0,
      'checkbox_on' => 'checkbox_on',
      'checkbox_off' => 0,
      'zero_checkbox_on' => '0',
      'zero_checkbox_off' => 0,
    ];
    foreach ($expected_values as $widget => $expected_value) {
      $this
        ->assertSame($values[$widget], $expected_value, new FormattableMarkup('Checkbox %widget returns expected value (expected: %expected, got: %value)', [
        '%widget' => var_export($widget, TRUE),
        '%expected' => var_export($expected_value, TRUE),
        '%value' => var_export($values[$widget], TRUE),
      ]));
    }
  }

  /**
   * Tests validation of #type 'select' elements.
   */
  public function testSelect() {
    $form = \Drupal::formBuilder()
      ->getForm('Drupal\\form_test\\Form\\FormTestSelectForm');
    $this
      ->drupalGet('form-test/select');

    // Verify that the options are escaped as expected.
    $this
      ->assertSession()
      ->assertEscaped('<strong>four</strong>');
    $this
      ->assertSession()
      ->responseNotContains('<strong>four</strong>');

    // Posting without any values should throw validation errors.
    $this
      ->submitForm([], 'Submit');
    $no_errors = [
      'select',
      'select_required',
      'select_optional',
      'empty_value',
      'empty_value_one',
      'no_default_optional',
      'no_default_empty_option_optional',
      'no_default_empty_value_optional',
      'multiple',
      'multiple_no_default',
    ];
    foreach ($no_errors as $key) {
      $this
        ->assertSession()
        ->pageTextNotContains($form[$key]['#title'] . ' field is required.');
    }
    $expected_errors = [
      'no_default',
      'no_default_empty_option',
      'no_default_empty_value',
      'no_default_empty_value_one',
      'multiple_no_default_required',
    ];
    foreach ($expected_errors as $key) {
      $this
        ->assertSession()
        ->pageTextContains($form[$key]['#title'] . ' field is required.');
    }

    // Post values for required fields.
    $edit = [
      'no_default' => 'three',
      'no_default_empty_option' => 'three',
      'no_default_empty_value' => 'three',
      'no_default_empty_value_one' => 'three',
      'multiple_no_default_required[]' => 'three',
    ];
    $this
      ->submitForm($edit, 'Submit');
    $values = Json::decode($this
      ->getSession()
      ->getPage()
      ->getContent());

    // Verify expected values.
    $expected = [
      'select' => 'one',
      'empty_value' => 'one',
      'empty_value_one' => 'one',
      'no_default' => 'three',
      'no_default_optional' => 'one',
      'no_default_optional_empty_value' => '',
      'no_default_empty_option' => 'three',
      'no_default_empty_option_optional' => '',
      'no_default_empty_value' => 'three',
      'no_default_empty_value_one' => 'three',
      'no_default_empty_value_optional' => 0,
      'multiple' => [
        'two' => 'two',
      ],
      'multiple_no_default' => [],
      'multiple_no_default_required' => [
        'three' => 'three',
      ],
    ];
    foreach ($expected as $key => $value) {
      $this
        ->assertSame($value, $values[$key], new FormattableMarkup('@name: @actual is equal to @expected.', [
        '@name' => $key,
        '@actual' => var_export($values[$key], TRUE),
        '@expected' => var_export($value, TRUE),
      ]));
    }
  }

  /**
   * Tests a select element when #options is not set.
   */
  public function testEmptySelect() {
    $this
      ->drupalGet('form-test/empty-select');
    $this
      ->assertSession()
      ->elementExists('xpath', "//select[1]");
    $this
      ->assertSession()
      ->elementNotExists('xpath', "//select[1]/option");
  }

  /**
   * Tests sorting and not sorting of options in a select element.
   */
  public function testSelectSorting() {
    $this
      ->drupalGet('form-test/select');

    // Verify the order of the select options.
    $this
      ->validateSelectSorting('unsorted', [
      'uso_first_element',
      'uso_second',
      'uso_zzgroup',
      'uso_gc',
      'uso_ga',
      'uso_gb',
      'uso_yygroup',
      'uso_ge',
      'uso_gd',
      'uso_gf',
      'uso_xxgroup',
      'uso_gz',
      'uso_gi',
      'uso_gh',
      'uso_d',
      'uso_c',
      'uso_b',
      'uso_a',
    ]);
    $this
      ->validateSelectSorting('sorted', [
      'sso_a',
      'sso_d',
      'sso_first_element',
      'sso_b',
      'sso_c',
      'sso_second',
      'sso_xxgroup',
      'sso_gz',
      'sso_gh',
      'sso_gi',
      'sso_yygroup',
      'sso_ge',
      'sso_gd',
      'sso_gf',
      'sso_zzgroup',
      'sso_ga',
      'sso_gb',
      'sso_gc',
    ]);
    $this
      ->validateSelectSorting('sorted_none', [
      'sno_empty',
      'sno_first_element',
      'sno_second',
      'sno_zzgroup',
      'sno_ga',
      'sno_gb',
      'sno_gc',
      'sno_a',
      'sno_d',
      'sno_b',
      'sno_c',
      'sno_xxgroup',
      'sno_gz',
      'sno_gi',
      'sno_gh',
      'sno_yygroup',
      'sno_ge',
      'sno_gd',
      'sno_gf',
    ]);
    $this
      ->validateSelectSorting('sorted_none_nostart', [
      'snn_empty',
      'snn_a',
      'snn_d',
      'snn_first_element',
      'snn_b',
      'snn_c',
      'snn_second',
      'snn_xxgroup',
      'snn_gz',
      'snn_gi',
      'snn_gh',
      'snn_yygroup',
      'snn_ge',
      'snn_gd',
      'snn_gf',
      'snn_zzgroup',
      'snn_ga',
      'snn_gb',
      'snn_gc',
    ]);

    // Verify that #sort_order and #sort_start are not in the page.
    $this
      ->assertSession()
      ->responseNotContains('#sort_order');
    $this
      ->assertSession()
      ->responseNotContains('#sort_start');
  }

  /**
   * Validates that the options are in the right order in a select.
   *
   * @param string $select
   *   Name of the select to verify.
   * @param string[] $order
   *   Expected order of its options.
   */
  protected function validateSelectSorting($select, array $order) {
    $option_map_function = function (NodeElement $node) {
      return $node
        ->getTagName() === 'optgroup' ? $node
        ->getAttribute('label') : $node
        ->getValue();
    };
    $option_nodes = $this
      ->getSession()
      ->getPage()
      ->findField($select)
      ->findAll('css', 'option, optgroup');
    $options = array_map($option_map_function, $option_nodes);
    $this
      ->assertSame($order, $options);
  }

  /**
   * Tests validation of #type 'number' and 'range' elements.
   */
  public function testNumber() {
    $form = \Drupal::formBuilder()
      ->getForm('\\Drupal\\form_test\\Form\\FormTestNumberForm');

    // Array with all the error messages to be checked.
    $error_messages = [
      'no_number' => '%name must be a number.',
      'too_low' => '%name must be higher than or equal to %min.',
      'too_high' => '%name must be lower than or equal to %max.',
      'step_mismatch' => '%name is not a valid number.',
    ];

    // The expected errors.
    $expected = [
      'integer_no_number' => 'no_number',
      'integer_no_step' => 0,
      'integer_no_step_step_error' => 'step_mismatch',
      'integer_step' => 0,
      'integer_step_error' => 'step_mismatch',
      'integer_step_min' => 0,
      'integer_step_min_error' => 'too_low',
      'integer_step_max' => 0,
      'integer_step_max_error' => 'too_high',
      'integer_step_min_border' => 0,
      'integer_step_max_border' => 0,
      'integer_step_based_on_min' => 0,
      'integer_step_based_on_min_error' => 'step_mismatch',
      'float_small_step' => 0,
      'float_step_no_error' => 0,
      'float_step_error' => 'step_mismatch',
      'float_step_hard_no_error' => 0,
      'float_step_hard_error' => 'step_mismatch',
      'float_step_any_no_error' => 0,
    ];

    // First test the number element type, then range.
    foreach ([
      'form-test/number',
      'form-test/number/range',
    ] as $path) {

      // Post form and show errors.
      $this
        ->drupalGet($path);
      $this
        ->submitForm([], 'Submit');
      foreach ($expected as $element => $error) {

        // Create placeholder array.
        $placeholders = [
          '%name' => $form[$element]['#title'],
          '%min' => $form[$element]['#min'] ?? '0',
          '%max' => $form[$element]['#max'] ?? '0',
        ];
        foreach ($error_messages as $id => $message) {

          // Check if the error exists on the page, if the current message ID is
          // expected. Otherwise ensure that the error message is not present.
          if ($id === $error) {
            $this
              ->assertSession()
              ->responseContains(new FormattableMarkup($message, $placeholders));
          }
          else {
            $this
              ->assertSession()
              ->responseNotContains(new FormattableMarkup($message, $placeholders));
          }
        }
      }
    }
  }

  /**
   * Tests default value handling of #type 'range' elements.
   */
  public function testRange() {
    $this
      ->drupalGet('form-test/range');
    $this
      ->submitForm([], 'Submit');
    $values = json_decode($this
      ->getSession()
      ->getPage()
      ->getContent());
    $this
      ->assertEquals(18, $values->with_default_value);
    $this
      ->assertEquals(10.5, $values->float);
    $this
      ->assertEquals(6, $values->integer);
    $this
      ->assertEquals(6.9, $values->offset);
    $this
      ->drupalGet('form-test/range/invalid');
    $this
      ->submitForm([], 'Submit');

    // Verify that the 'range' element has the error class.
    $this
      ->assertSession()
      ->elementExists('xpath', '//input[@type="range" and contains(@class, "error")]');
  }

  /**
   * Tests validation of #type 'color' elements.
   */
  public function testColorValidation() {

    // Keys are inputs, values are expected results.
    $values = [
      '' => '#000000',
      '#000' => '#000000',
      'AAA' => '#aaaaaa',
      '#af0DEE' => '#af0dee',
      '#99ccBc' => '#99ccbc',
      '#aabbcc' => '#aabbcc',
      '123456' => '#123456',
    ];

    // Tests that valid values are properly normalized.
    foreach ($values as $input => $expected) {
      $edit = [
        'color' => $input,
      ];
      $this
        ->drupalGet('form-test/color');
      $this
        ->submitForm($edit, 'Submit');
      $result = json_decode($this
        ->getSession()
        ->getPage()
        ->getContent());
      $this
        ->assertEquals($expected, $result->color);
    }

    // Tests invalid values are rejected.
    $values = [
      '#0008',
      '#1234',
      '#fffffg',
      '#abcdef22',
      '17',
      '#uaa',
    ];
    foreach ($values as $input) {
      $edit = [
        'color' => $input,
      ];
      $this
        ->drupalGet('form-test/color');
      $this
        ->submitForm($edit, 'Submit');
      $this
        ->assertSession()
        ->pageTextContains("Color must be a valid color.");
    }
  }

  /**
   * Tests handling of disabled elements.
   *
   * @see _form_test_disabled_elements()
   */
  public function testDisabledElements() {

    // Get the raw form in its original state.
    $form_state = new FormState();
    $form = (new FormTestDisabledElementsForm())
      ->buildForm([], $form_state);

    // Build a submission that tries to hijack the form by submitting input for
    // elements that are disabled.
    $edit = [];
    foreach (Element::children($form) as $key) {
      if (isset($form[$key]['#test_hijack_value'])) {
        if (is_array($form[$key]['#test_hijack_value'])) {
          foreach ($form[$key]['#test_hijack_value'] as $subkey => $value) {
            $edit[$key . '[' . $subkey . ']'] = $value;
          }
        }
        else {
          $edit[$key] = $form[$key]['#test_hijack_value'];
        }
      }
    }

    // Submit the form with no input, as the browser does for disabled elements,
    // and fetch the $form_state->getValues() that is passed to the submit handler.
    $this
      ->drupalGet('form-test/disabled-elements');
    $this
      ->submitForm([], 'Submit');
    $returned_values['normal'] = Json::decode($this
      ->getSession()
      ->getPage()
      ->getContent());

    // Do the same with input, as could happen if JavaScript un-disables an
    // element. submitForm() emulates a browser by not submitting input for
    // disabled elements, so we need to un-disable those elements first.
    $this
      ->drupalGet('form-test/disabled-elements');
    $disabled_elements = [];
    foreach ($this
      ->xpath('//*[@disabled]') as $element) {
      $disabled_elements[] = (string) $element
        ->getAttribute('name');
    }

    // All the elements should be marked as disabled, including the ones below
    // the disabled container.
    $actual_count = count($disabled_elements);
    $expected_count = 44;
    $this
      ->assertEquals($expected_count, $actual_count, new FormattableMarkup('Found @actual elements with disabled property (expected @expected).', [
      '@actual' => count($disabled_elements),
      '@expected' => $expected_count,
    ]));

    // Mink does not "see" hidden elements, so we need to set the value of the
    // hidden element directly.
    $this
      ->assertSession()
      ->elementExists('css', 'input[name="hidden"]')
      ->setValue($edit['hidden']);
    unset($edit['hidden']);
    $this
      ->submitForm($edit, 'Submit');
    $returned_values['hijacked'] = Json::decode($this
      ->getSession()
      ->getPage()
      ->getContent());

    // Ensure that the returned values match the form's default values in both
    // cases.
    foreach ($returned_values as $values) {
      $this
        ->assertFormValuesDefault($values, $form);
    }
  }

  /**
   * Assert that the values submitted to a form matches the default values of the elements.
   *
   * @internal
   */
  public function assertFormValuesDefault(array $values, array $form) : void {
    foreach (Element::children($form) as $key) {
      if (isset($form[$key]['#default_value'])) {
        if (isset($form[$key]['#expected_value'])) {
          $expected_value = $form[$key]['#expected_value'];
        }
        else {
          $expected_value = $form[$key]['#default_value'];
        }
        if (in_array($key, [
          'checkboxes_multiple',
          'checkboxes_single_select',
          'checkboxes_single_unselect',
        ], TRUE)) {

          // Checkboxes values are not filtered out.
          $values[$key] = array_filter($values[$key]);
        }
        $this
          ->assertSame($expected_value, $values[$key], new FormattableMarkup('Default value for %type: expected %expected, returned %returned.', [
          '%type' => $key,
          '%expected' => var_export($expected_value, TRUE),
          '%returned' => var_export($values[$key], TRUE),
        ]));
      }

      // Recurse children.
      $this
        ->assertFormValuesDefault($values, $form[$key]);
    }
  }

  /**
   * Verify markup for disabled form elements.
   *
   * @see _form_test_disabled_elements()
   */
  public function testDisabledMarkup() {
    $this
      ->drupalGet('form-test/disabled-elements');
    $form = \Drupal::formBuilder()
      ->getForm('\\Drupal\\form_test\\Form\\FormTestDisabledElementsForm');
    $type_map = [
      'textarea' => 'textarea',
      'select' => 'select',
      'weight' => 'select',
      'datetime' => 'datetime',
    ];
    foreach ($form as $name => $item) {

      // Skip special #types.
      if (!isset($item['#type']) || in_array($item['#type'], [
        'hidden',
        'text_format',
      ])) {
        continue;
      }

      // Setup XPath and CSS class depending on #type.
      if (in_array($item['#type'], [
        'button',
        'submit',
      ])) {
        $path = "//!type[contains(@class, :div-class) and @value=:value]";
        $class = 'is-disabled';
      }
      elseif (in_array($item['#type'], [
        'image_button',
      ])) {
        $path = "//!type[contains(@class, :div-class) and @value=:value]";
        $class = 'is-disabled';
      }
      else {

        // starts-with() required for checkboxes.
        $path = "//div[contains(@class, :div-class)]/descendant::!type[starts-with(@name, :name)]";
        $class = 'form-disabled';
      }

      // Replace DOM element name in $path according to #type.
      $type = 'input';
      if (isset($type_map[$item['#type']])) {
        $type = $type_map[$item['#type']];
      }
      if (isset($item['#value']) && is_object($item['#value'])) {
        $item['#value'] = (string) $item['#value'];
      }
      $path = strtr($path, [
        '!type' => $type,
      ]);

      // Verify that the element exists.
      $this
        ->assertSession()
        ->elementExists('xpath', $this
        ->assertSession()
        ->buildXPathQuery($path, [
        ':name' => Html::escape($name),
        ':div-class' => $class,
        ':value' => $item['#value'] ?? '',
      ]));
    }

    // Verify special element #type text-format.
    $this
      ->assertSession()
      ->elementExists('xpath', "//div[contains(@class, 'form-disabled')]/descendant::textarea[@name='text_format[value]']");
    $this
      ->assertSession()
      ->elementExists('xpath', "//div[contains(@class, 'form-disabled')]/descendant::select[@name='text_format[format]']");
  }

  /**
   * Tests Form API protections against input forgery.
   *
   * @see \Drupal\form_test\Form\FormTestInputForgeryForm
   */
  public function testInputForgery() {
    $this
      ->drupalGet('form-test/input-forgery');

    // The value for checkboxes[two] was changed using post render to simulate
    // an input forgery.
    // @see \Drupal\form_test\Form\FormTestInputForgeryForm::postRender
    $this
      ->submitForm([
      'checkboxes[one]' => TRUE,
      'checkboxes[two]' => TRUE,
    ], 'Submit');
    $this
      ->assertSession()
      ->pageTextContains('An illegal choice has been detected.');
  }

  /**
   * Tests required attribute.
   */
  public function testRequiredAttribute() {
    $this
      ->drupalGet('form-test/required-attribute');
    foreach ([
      'textfield',
      'password',
      'textarea',
    ] as $type) {
      $field = $this
        ->assertSession()
        ->fieldExists("edit-{$type}");
      $this
        ->assertSame('required', $field
        ->getAttribute('required'), "The {$type} has the proper required attribute.");
    }
  }

}

Members

Name	Modifiers	Type	Description	Overrides
BlockCreationTrait::placeBlock	protected	function	Creates a block instance based on default settings. Aliased as: drupalPlaceBlock
BrowserHtmlDebugTrait::$htmlOutputBaseUrl	protected	property	The Base URI to use for links to the output files.
BrowserHtmlDebugTrait::$htmlOutputClassName	protected	property	Class name for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputCounter	protected	property	Counter for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputCounterStorage	protected	property	Counter storage for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputDirectory	protected	property	Directory name for HTML output logging.
BrowserHtmlDebugTrait::$htmlOutputEnabled	protected	property	HTML output enabled.
BrowserHtmlDebugTrait::$htmlOutputFile	protected	property	The file name to write the list of URLs to.
BrowserHtmlDebugTrait::$htmlOutputTestId	protected	property	HTML output test ID.
BrowserHtmlDebugTrait::formatHtmlOutputHeaders	protected	function	Formats HTTP headers as string for HTML output logging.
BrowserHtmlDebugTrait::getHtmlOutputHeaders	protected	function	Returns headers in HTML output format.	1
BrowserHtmlDebugTrait::getResponseLogHandler	protected	function	Provides a Guzzle middleware handler to log every response received.
BrowserHtmlDebugTrait::htmlOutput	protected	function	Logs a HTML output message in a text file.
BrowserHtmlDebugTrait::initBrowserOutputFile	protected	function	Creates the directory to store browser output.
BrowserTestBase::$baseUrl	protected	property	The base URL.
BrowserTestBase::$configImporter	protected	property	The config importer that can be used in a test.
BrowserTestBase::$customTranslations	protected	property	An array of custom translations suitable for drupal_rewrite_settings().
BrowserTestBase::$databasePrefix	protected	property	The database prefix of this test run.
BrowserTestBase::$mink	protected	property	Mink session manager.
BrowserTestBase::$minkDefaultDriverArgs	protected	property	Mink default driver params.
BrowserTestBase::$minkDefaultDriverClass	protected	property	Mink class for the default driver to use.	1
BrowserTestBase::$originalContainer	protected	property	The original container.
BrowserTestBase::$originalShutdownCallbacks	protected	property	The original array of shutdown function callbacks.
BrowserTestBase::$preserveGlobalState	protected	property
BrowserTestBase::$profile	protected	property	The profile to install as a basis for testing.	14
BrowserTestBase::$root	protected	property	The app root.
BrowserTestBase::$runTestInSeparateProcess	protected	property	Browser tests are run in separate processes to prevent collisions between code that may be loaded by tests.
BrowserTestBase::$timeLimit	protected	property	Time limit in seconds for the test.
BrowserTestBase::$translationFilesDirectory	protected	property	The translation file directory for the test environment.
BrowserTestBase::cleanupEnvironment	protected	function	Clean up the test environment.
BrowserTestBase::config	protected	function	Configuration accessor for tests. Returns non-overridden configuration.
BrowserTestBase::filePreDeleteCallback	public static	function	Ensures test files are deletable.
BrowserTestBase::getDefaultDriverInstance	protected	function	Gets an instance of the default Mink driver.
BrowserTestBase::getDrupalSettings	protected	function	Gets the JavaScript drupalSettings variable for the currently-loaded page.	1
BrowserTestBase::getHttpClient	protected	function	Obtain the HTTP client for the system under test.
BrowserTestBase::getMinkDriverArgs	protected	function	Get the Mink driver args from an environment variable, if it is set. Can be overridden in a derived class so it is possible to use a different value for a subset of tests, e.g. the JavaScript tests.	1
BrowserTestBase::getOptions	protected	function	Helper function to get the options of select field.
BrowserTestBase::getSession	public	function	Returns Mink session.
BrowserTestBase::getSessionCookies	protected	function	Get session cookies from current session.
BrowserTestBase::getTestMethodCaller	protected	function	Retrieves the current calling line in the class under test. Overrides BrowserHtmlDebugTrait::getTestMethodCaller
BrowserTestBase::initFrontPage	protected	function	Visits the front page when initializing Mink.	3
BrowserTestBase::initMink	protected	function	Initializes Mink sessions.	1
BrowserTestBase::installDrupal	public	function	Installs Drupal into the test site.	1
BrowserTestBase::registerSessions	protected	function	Registers additional Mink sessions.
BrowserTestBase::setUpAppRoot	protected	function	Sets up the root application path.
BrowserTestBase::setUpBeforeClass	public static	function
BrowserTestBase::tearDown	protected	function		2
BrowserTestBase::translatePostValues	protected	function	Transforms a nested array into a flat array suitable for submitForm().
BrowserTestBase::xpath	protected	function	Performs an xpath search on the contents of the internal browser.
BrowserTestBase::__sleep	public	function	Prevents serializing any properties.
ConfigTestTrait::configImporter	protected	function	Returns a ConfigImporter object to import test configuration.
ConfigTestTrait::copyConfig	protected	function	Copies configuration objects from source storage to target storage.
ContentTypeCreationTrait::createContentType	protected	function	Creates a custom content type based on default settings. Aliased as: drupalCreateContentType
ExtensionListTestTrait::getModulePath	protected	function	Gets the path for the specified module.
ExtensionListTestTrait::getThemePath	protected	function	Gets the path for the specified theme.
FormTest::$defaultTheme	protected	property	The theme to install as the default for testing. Overrides BrowserTestBase::$defaultTheme
FormTest::$modules	protected static	property	Modules to enable. Overrides BrowserTestBase::$modules
FormTest::assertFormValuesDefault	public	function	Assert that the values submitted to a form matches the default values of the elements.
FormTest::setUp	protected	function	Overrides BrowserTestBase::setUp
FormTest::testCheckboxProcessing	public	function	Tests default value handling for checkboxes.
FormTest::testColorValidation	public	function	Tests validation of #type 'color' elements.
FormTest::testDisabledElements	public	function	Tests handling of disabled elements.
FormTest::testDisabledMarkup	public	function	Verify markup for disabled form elements.
FormTest::testEmptySelect	public	function	Tests a select element when #options is not set.
FormTest::testGetFormsCsrfToken	public	function	CSRF tokens for GET forms should not be added by default.
FormTest::testInputForgery	public	function	Tests Form API protections against input forgery.
FormTest::testInputWithInvalidToken	public	function	Tests that input is retained for safe elements even with an invalid token.
FormTest::testNumber	public	function	Tests validation of #type 'number' and 'range' elements.
FormTest::testRange	public	function	Tests default value handling of #type 'range' elements.
FormTest::testRequiredAttribute	public	function	Tests required attribute.
FormTest::testRequiredCheckboxesRadio	public	function	Tests validation for required checkbox, select, and radio elements.
FormTest::testRequiredFields	public	function	Check several empty values for required forms elements.
FormTest::testRequiredTextfieldNoTitle	public	function	Tests validation for required textfield element without title.
FormTest::testSelect	public	function	Tests validation of #type 'select' elements.
FormTest::testSelectSorting	public	function	Tests sorting and not sorting of options in a select element.
FormTest::validateSelectSorting	protected	function	Validates that the options are in the right order in a select.
FunctionalTestSetupTrait::$apcuEnsureUniquePrefix	protected	property	The flag to set 'apcu_ensure_unique_prefix' setting.	1
FunctionalTestSetupTrait::$classLoader	protected	property	The class loader to use for installation and initialization of setup.
FunctionalTestSetupTrait::$rootUser	protected	property	The "#1" admin user.
FunctionalTestSetupTrait::doInstall	protected	function	Execute the non-interactive installer.	1
FunctionalTestSetupTrait::getDatabaseTypes	protected	function	Returns all supported database driver installer objects.
FunctionalTestSetupTrait::initConfig	protected	function	Initialize various configurations post-installation.
FunctionalTestSetupTrait::initKernel	protected	function	Initializes the kernel after installation.
FunctionalTestSetupTrait::initSettings	protected	function	Initialize settings created during install.
FunctionalTestSetupTrait::initUserSession	protected	function	Initializes user 1 for the site to be installed.
FunctionalTestSetupTrait::installDefaultThemeFromClassProperty	protected	function	Installs the default theme defined by `static::$defaultTheme` when needed.
FunctionalTestSetupTrait::installModulesFromClassProperty	protected	function	Install modules defined by `static::$modules`.	1
FunctionalTestSetupTrait::installParameters	protected	function	Returns the parameters that will be used when the test installs Drupal.	4
FunctionalTestSetupTrait::prepareEnvironment	protected	function	Prepares the current environment for running the test.	21
FunctionalTestSetupTrait::prepareRequestForGenerator	protected	function	Creates a mock request and sets it on the generator.
FunctionalTestSetupTrait::prepareSettings	protected	function	Prepares site settings and services before installation.	3
FunctionalTestSetupTrait::rebuildAll	protected	function	Resets and rebuilds the environment after setup.
FunctionalTestSetupTrait::rebuildContainer	protected	function	Rebuilds \Drupal::getContainer().
FunctionalTestSetupTrait::resetAll	protected	function	Resets all data structures after having enabled new modules.
FunctionalTestSetupTrait::setContainerParameter	protected	function	Changes parameters in the services.yml file.
FunctionalTestSetupTrait::setupBaseUrl	protected	function	Sets up the base URL based upon the environment variable.
FunctionalTestSetupTrait::writeSettings	protected	function	Rewrites the settings.php file of the test site.	1
NodeCreationTrait::createNode	protected	function	Creates a node based on default settings. Aliased as: drupalCreateNode
NodeCreationTrait::getNodeByTitle	public	function	Get a node from the database based on its title. Aliased as: drupalGetNodeByTitle
PhpUnitWarnings::$deprecationWarnings	private static	property	Deprecation warnings from PHPUnit to raise with @trigger_error().
PhpUnitWarnings::addWarning	public	function	Converts PHPUnit deprecation warnings to E_USER_DEPRECATED.
RandomGeneratorTrait::$randomGenerator	protected	property	The random generator.
RandomGeneratorTrait::getRandomGenerator	protected	function	Gets the random generator for the utility methods.
RandomGeneratorTrait::randomMachineName	protected	function	Generates a unique random string containing letters and numbers.
RandomGeneratorTrait::randomObject	public	function	Generates a random PHP object.
RandomGeneratorTrait::randomString	public	function	Generates a pseudo-random string of ASCII characters of codes 32 to 126.
RandomGeneratorTrait::randomStringValidate	public	function	Callback for random string validation.
RefreshVariablesTrait::refreshVariables	protected	function	Refreshes in-memory configuration and state information.	1
SessionTestTrait::$sessionName	protected	property	The name of the session cookie.
SessionTestTrait::generateSessionName	protected	function	Generates a session cookie name.
SessionTestTrait::getSessionName	protected	function	Returns the session name in use on the child site.
StorageCopyTrait::replaceStorageContents	protected static	function	Copy the configuration from one storage to another and remove stale items.
TestRequirementsTrait::checkModuleRequirements	private	function	Checks missing module requirements.
TestRequirementsTrait::checkRequirements	protected	function	Check module requirements for the Drupal use case.
TestRequirementsTrait::getDrupalRoot	protected static	function	Returns the Drupal root directory.
TestSetupTrait::$configSchemaCheckerExclusions	protected static	property	An array of config object names that are excluded from schema checking.
TestSetupTrait::$container	protected	property	The dependency injection container used in the test.
TestSetupTrait::$kernel	protected	property	The DrupalKernel instance used in the test.
TestSetupTrait::$originalSite	protected	property	The site directory of the original parent site.
TestSetupTrait::$privateFilesDirectory	protected	property	The private file directory for the test environment.
TestSetupTrait::$publicFilesDirectory	protected	property	The public file directory for the test environment.
TestSetupTrait::$siteDirectory	protected	property	The site directory of this test run.
TestSetupTrait::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	1
TestSetupTrait::$tempFilesDirectory	protected	property	The temporary file directory for the test environment.
TestSetupTrait::$testId	protected	property	The test run ID.
TestSetupTrait::changeDatabasePrefix	protected	function	Changes the database connection to the prefixed one.
TestSetupTrait::getConfigSchemaExclusions	protected	function	Gets the config schema exclusions for this test.
TestSetupTrait::getDatabaseConnection	public static	function	Returns the database connection to the site under test.
TestSetupTrait::prepareDatabasePrefix	protected	function	Generates a database prefix for running tests.	1
UiHelperTrait::$loggedInUser	protected	property	The current user logged in using the Mink controlled browser.
UiHelperTrait::$maximumMetaRefreshCount	protected	property	The number of meta refresh redirects to follow, or NULL if unlimited.
UiHelperTrait::$metaRefreshCount	protected	property	The number of meta refresh redirects followed during ::drupalGet().
UiHelperTrait::assertSession	public	function	Returns WebAssert object.	1
UiHelperTrait::buildUrl	protected	function	Builds an absolute URL from a system path or a URL object.
UiHelperTrait::checkForMetaRefresh	protected	function	Checks for meta refresh tag and if found call drupalGet() recursively.
UiHelperTrait::click	protected	function	Clicks the element with the given CSS selector.
UiHelperTrait::clickLink	protected	function	Follows a link by complete name.
UiHelperTrait::cssSelect	protected	function	Searches elements using a CSS selector in the raw content.
UiHelperTrait::cssSelectToXpath	protected	function	Translates a CSS expression to its XPath equivalent.
UiHelperTrait::drupalGet	protected	function	Retrieves a Drupal path or an absolute path.
UiHelperTrait::drupalLogin	protected	function	Logs in a user using the Mink controlled browser.
UiHelperTrait::drupalLogout	protected	function	Logs a user out of the Mink controlled browser and confirms.
UiHelperTrait::drupalUserIsLoggedIn	protected	function	Returns whether a given user account is logged in.
UiHelperTrait::getAbsoluteUrl	protected	function	Takes a path and returns an absolute path.
UiHelperTrait::getTextContent	protected	function	Retrieves the plain-text content from the current page.
UiHelperTrait::getUrl	protected	function	Get the current URL from the browser.
UiHelperTrait::isTestUsingGuzzleClient	protected	function	Determines if test is using DrupalTestBrowser.
UiHelperTrait::prepareRequest	protected	function	Prepare for a request to testing site.	1
UiHelperTrait::submitForm	protected	function	Fills and submits a form.
UserCreationTrait::checkPermissions	protected	function	Checks whether a given list of permission names is valid.
UserCreationTrait::createAdminRole	protected	function	Creates an administrative role.
UserCreationTrait::createRole	protected	function	Creates a role with specified permissions. Aliased as: drupalCreateRole
UserCreationTrait::createUser	protected	function	Create a user with a given set of permissions. Aliased as: drupalCreateUser
UserCreationTrait::grantPermissions	protected	function	Grant permissions to a user role.
UserCreationTrait::setCurrentUser	protected	function	Switch the current logged in user.
UserCreationTrait::setUpCurrentUser	protected	function	Creates a random user account and sets it as current user.
XdebugRequestTrait::extractCookiesFromRequest	protected	function	Adds xdebug cookies, from request setup.

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class FormTest in Drupal 10

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