class ValidationTest

class ValidationTest extends WebDriverTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'form_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests partial form validation through #limit_validation_errors.
   */
  public function testValidateLimitErrors() : void {
    $edit = [
      'test' => 'invalid',
      'test_numeric_index[0]' => 'invalid',
      'test_substring[foo]' => 'invalid',
    ];
    $path = 'form-test/limit-validation-errors';
    // Render the form, and verify that the buttons with limited server-side
    // validation have the proper 'formnovalidate' attribute (to prevent
    // client-side validation by the browser).
    $this->drupalGet($path);
    $expected = 'formnovalidate';
    foreach ([
      'partial',
      'partial-numeric-index',
      'substring',
    ] as $type) {
      // Verify the $type button has the proper formnovalidate attribute.
      $this->assertSession()
        ->elementExists('xpath', "//input[@id='edit-{$type}' and @formnovalidate='{$expected}']");
    }
    // The button with full server-side validation should not have the
    // 'formnovalidate' attribute.
    $this->assertSession()
      ->elementExists('xpath', "//input[@id='edit-full' and not(@formnovalidate)]");
    // Submit the form by pressing the 'Partial validate' button (uses
    // #limit_validation_errors) and ensure that the title field is not
    // validated, but the #element_validate handler for the 'test' field
    // is triggered.
    $this->drupalGet($path);
    $this->submitForm($edit, 'Partial validate');
    $this->assertSession()
      ->pageTextNotContains('Title field is required.');
    $this->assertSession()
      ->pageTextContains('Test element is invalid');
    // Edge case of #limit_validation_errors containing numeric indexes: same
    // thing with the 'Partial validate (numeric index)' button and the
    // 'test_numeric_index' field.
    $this->drupalGet($path);
    $this->submitForm($edit, 'Partial validate (numeric index)');
    $this->assertSession()
      ->pageTextNotContains('Title field is required.');
    $this->assertSession()
      ->pageTextContains('Test (numeric index) element is invalid');
    // Ensure something like 'foobar' isn't considered "inside" 'foo'.
    $this->drupalGet($path);
    $this->submitForm($edit, 'Partial validate (substring)');
    $this->assertSession()
      ->pageTextNotContains('Title field is required.');
    $this->assertSession()
      ->pageTextContains('Test (substring) foo element is invalid');
    // Ensure not validated values are not available to submit handlers.
    $this->drupalGet($path);
    $this->submitForm([
      'title' => '',
      'test' => 'valid',
    ], 'Partial validate');
    $this->assertSession()
      ->pageTextContains('Only validated values appear in the form values.');
    // Now test full form validation and ensure that the #element_validate
    // handler is still triggered.
    $this->drupalGet($path);
    $this->submitForm($edit, 'Full validate');
    $this->assertSession()
      ->pageTextContains('Title field is required.');
    $this->assertSession()
      ->pageTextContains('Test element is invalid');
  }
  
  /**
   * Tests #pattern validation.
   */
  public function testPatternValidation() : void {
    $textfield_error = 'One digit followed by lowercase letters field is not in the right format.';
    $tel_error = 'Everything except numbers field is not in the right format.';
    $password_error = 'Password field is not in the right format.';
    // Invalid textfield, valid tel.
    $edit = [
      'textfield' => 'invalid',
      'tel' => 'valid',
    ];
    $this->drupalGet('form-test/pattern');
    $this->submitForm($edit, 'Submit');
    $this->assertSession()
      ->pageTextContains($textfield_error);
    $this->assertSession()
      ->pageTextNotContains($tel_error);
    $this->assertSession()
      ->pageTextNotContains($password_error);
    // Valid textfield, invalid tel, valid password.
    $edit = [
      'textfield' => '7seven',
      'tel' => '818937',
      'password' => '0100110',
    ];
    $this->drupalGet('form-test/pattern');
    $this->submitForm($edit, 'Submit');
    $this->assertSession()
      ->pageTextNotContains($textfield_error);
    $this->assertSession()
      ->pageTextContains($tel_error);
    $this->assertSession()
      ->pageTextNotContains($password_error);
    // Non required fields are not validated if empty.
    $edit = [
      'textfield' => '',
      'tel' => '',
    ];
    $this->drupalGet('form-test/pattern');
    $this->submitForm($edit, 'Submit');
    $this->assertSession()
      ->pageTextNotContains($textfield_error);
    $this->assertSession()
      ->pageTextNotContains($tel_error);
    $this->assertSession()
      ->pageTextNotContains($password_error);
    // Invalid password.
    $edit = [
      'password' => $this->randomMachineName(),
    ];
    $this->drupalGet('form-test/pattern');
    $this->submitForm($edit, 'Submit');
    $this->assertSession()
      ->pageTextNotContains($textfield_error);
    $this->assertSession()
      ->pageTextNotContains($tel_error);
    $this->assertSession()
      ->pageTextContains($password_error);
    // The pattern attribute overrides #pattern and is not validated on the
    // server side.
    $edit = [
      'textfield' => '',
      'tel' => '',
      'url' => 'http://www.example.com/',
    ];
    $this->drupalGet('form-test/pattern');
    $this->submitForm($edit, 'Submit');
    $this->assertSession()
      ->pageTextNotContains('Client side validation field is not in the right format.');
  }
  
  /**
   * Tests #required with custom validation errors.
   *
   * @see \Drupal\form_test\Form\FormTestValidateRequiredForm
   */
  public function testCustomRequiredError() : void {
    $form = \Drupal::formBuilder()->getForm('\\Drupal\\form_test\\Form\\FormTestValidateRequiredForm');
    // Verify that a custom #required error can be set.
    $edit = [];
    $this->drupalGet('form-test/validate-required');
    $this->submitForm($edit, 'Submit');
    foreach (Element::children($form) as $key) {
      if (isset($form[$key]['#required_error'])) {
        $this->assertSession()
          ->pageTextNotContains($form[$key]['#title'] . ' field is required.');
        $this->assertSession()
          ->pageTextContains((string) $form[$key]['#required_error']);
      }
      elseif (isset($form[$key]['#form_test_required_error'])) {
        $this->assertSession()
          ->pageTextNotContains($form[$key]['#title'] . ' field is required.');
        $this->assertSession()
          ->pageTextContains((string) $form[$key]['#form_test_required_error']);
      }
      if (isset($form[$key]['#title'])) {
        $this->assertSession()
          ->pageTextNotContains('The submitted value in the ' . $form[$key]['#title'] . ' element is not allowed.');
      }
    }
    // Verify that no custom validation error appears with valid values.
    $edit = [
      'textfield' => $this->randomString(),
      'checkboxes[foo]' => TRUE,
      'select' => 'foo',
    ];
    $this->drupalGet('form-test/validate-required');
    $this->submitForm($edit, 'Submit');
    foreach (Element::children($form) as $key) {
      if (isset($form[$key]['#required_error'])) {
        $this->assertSession()
          ->pageTextNotContains($form[$key]['#title'] . ' field is required.');
        $this->assertSession()
          ->pageTextNotContains((string) $form[$key]['#required_error']);
      }
      elseif (isset($form[$key]['#form_test_required_error'])) {
        $this->assertSession()
          ->pageTextNotContains($form[$key]['#title'] . ' field is required.');
        $this->assertSession()
          ->pageTextNotContains((string) $form[$key]['#form_test_required_error']);
      }
      if (isset($form[$key]['#title'])) {
        $this->assertSession()
          ->pageTextNotContains('The submitted value in the ' . $form[$key]['#title'] . ' element is not allowed.');
      }
    }
  }

}