class ElementTest

class ElementTest extends BrowserTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'form_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'starterkit_theme';
  
  /**
   * Tests placeholder text for elements that support placeholders.
   */
  public function testPlaceHolderText() {
    $this->drupalGet('form-test/placeholder-text');
    foreach ([
      'textfield',
      'tel',
      'url',
      'password',
      'email',
      'number',
      'textarea',
    ] as $type) {
      $field = $this->assertSession()
        ->fieldExists("edit-{$type}");
      $this->assertSame('placeholder-text', $field->getAttribute('placeholder'));
    }
  }
  
  /**
   * Tests expansion of #options for #type checkboxes and radios.
   */
  public function testOptions() {
    $this->drupalGet('form-test/checkboxes-radios');
    // Verify that all options appear in their defined order.
    foreach ([
      'checkbox',
      'radio',
    ] as $type) {
      $elements = $this->xpath('//input[@type=:type]', [
        ':type' => $type,
      ]);
      $expected_values = [
        '0',
        'foo',
        '1',
        'bar',
        '>',
      ];
      foreach ($elements as $element) {
        $expected = array_shift($expected_values);
        $this->assertSame($expected, (string) $element->getAttribute('value'));
      }
    }
    // Verify that the choices are admin filtered as expected.
    $this->assertSession()
      ->responseContains("<em>Special Char</em>alert('checkboxes');");
    $this->assertSession()
      ->responseContains("<em>Special Char</em>alert('radios');");
    $this->assertSession()
      ->responseContains('<em>Bar - checkboxes</em>');
    $this->assertSession()
      ->responseContains('<em>Bar - radios</em>');
    // Enable customized option sub-elements.
    $this->drupalGet('form-test/checkboxes-radios/customize');
    // Verify that all options appear in their defined order, taking a custom
    // #weight into account.
    foreach ([
      'checkbox',
      'radio',
    ] as $type) {
      $elements = $this->xpath('//input[@type=:type]', [
        ':type' => $type,
      ]);
      $expected_values = [
        '0',
        'foo',
        'bar',
        '>',
        '1',
      ];
      foreach ($elements as $element) {
        $expected = array_shift($expected_values);
        $this->assertSame($expected, (string) $element->getAttribute('value'));
      }
    }
    // Verify that custom #description properties are output.
    foreach ([
      'checkboxes',
      'radios',
    ] as $type) {
      $this->assertSession()
        ->elementExists('xpath', "//input[@id='edit-{$type}-foo']/following-sibling::div[@class='description']");
    }
  }
  
  /**
   * Tests correct checked attribute for radios element.
   */
  public function testRadiosChecked() {
    // Verify that there is only one radio option checked.
    $this->drupalGet('form-test/radios-checked');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios", '0');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-string" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-string", 'bar');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-boolean-true" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-boolean-true", '1');
    // A default value of FALSE indicates that nothing is set.
    $this->assertSession()
      ->elementNotExists('xpath', '//input[@name="radios-boolean-false" and @checked]');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-boolean-any" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-boolean-any", 'All');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-string-zero" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-string-zero", '0');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-int-non-zero" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-int-non-zero", '10');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-int-non-zero-as-string" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-int-non-zero-as-string", '100');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-empty-string" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-empty-string", '0');
    $this->assertSession()
      ->elementNotExists('xpath', '//input[@name="radios-empty-array" and @checked]');
    $this->assertSession()
      ->elementsCount('xpath', '//input[@name="radios-key-FALSE" and @checked]', 1);
    $this->assertSession()
      ->fieldValueEquals("radios-key-FALSE", '0');
  }
  
  /**
   * Tests wrapper ids for checkboxes and radios.
   */
  public function testWrapperIds() {
    $this->drupalGet('form-test/checkboxes-radios');
    // Verify that wrapper id is different from element id.
    foreach ([
      'checkboxes',
      'radios',
    ] as $type) {
      // A single element id is found.
      $this->assertSession()
        ->elementsCount('xpath', "//div[@id='edit-{$type}']", 1);
      $this->assertSession()
        ->elementsCount('xpath', "//fieldset[@id='edit-{$type}--wrapper']", 1);
    }
  }
  
  /**
   * Tests button classes.
   */
  public function testButtonClasses() {
    $this->drupalGet('form-test/button-class');
    // Just contains(@class, "button") won't do because then
    // "button--foo" would contain "button". Instead, check
    // " button ". Make sure it matches in the beginning and the end too
    // by adding a space before and after.
    $this->assertSession()
      ->elementsCount('xpath', '//*[contains(concat(" ", @class, " "), " button ")]', 2);
    $this->assertSession()
      ->elementsCount('xpath', '//*[contains(concat(" ", @class, " "), " button--foo ")]', 1);
    $this->assertSession()
      ->elementsCount('xpath', '//*[contains(concat(" ", @class, " "), " button--danger ")]', 1);
  }
  
  /**
   * Tests the #group property.
   */
  public function testGroupElements() {
    $this->drupalGet('form-test/group-details');
    $this->assertSession()
      ->elementsCount('xpath', '//div[@class="details-wrapper"]//div[@class="details-wrapper"]//label', 1);
    $this->drupalGet('form-test/group-container');
    $this->assertSession()
      ->elementsCount('xpath', '//div[@id="edit-container"]//div[@class="details-wrapper"]//label', 1);
    $this->drupalGet('form-test/group-fieldset');
    $this->assertSession()
      ->elementsCount('xpath', '//fieldset[@id="edit-fieldset"]//div[@id="edit-meta"]//label', 1);
    $this->assertSession()
      ->elementTextEquals('xpath', '//fieldset[@id="edit-fieldset-zero"]//legend', '0');
    $this->drupalGet('form-test/group-vertical-tabs');
    $this->assertSession()
      ->elementsCount('xpath', '//div[@data-vertical-tabs-panes]//details[@id="edit-meta"]//label', 1);
    $this->assertSession()
      ->elementsCount('xpath', '//div[@data-vertical-tabs-panes]//details[@id="edit-meta-2"]//label', 1);
  }
  
  /**
   * Tests the #required property on details and fieldset elements.
   */
  public function testRequiredFieldsetsAndDetails() {
    $this->drupalGet('form-test/group-details');
    $this->assertEmpty($this->cssSelect('summary.form-required'));
    $this->drupalGet('form-test/group-details/1');
    $this->assertNotEmpty($this->cssSelect('summary.form-required'));
    $this->drupalGet('form-test/group-fieldset');
    $this->assertEmpty($this->cssSelect('span.form-required'));
    $this->drupalGet('form-test/group-fieldset/1');
    $this->assertNotEmpty($this->cssSelect('span.form-required'));
  }
  
  /**
   * Tests a form with an autocomplete setting..
   */
  public function testFormAutocomplete() {
    $this->drupalGet('form-test/autocomplete');
    // Ensure that the user does not have access to the autocompletion.
    $this->assertSession()
      ->elementNotExists('xpath', '//input[@id="edit-autocomplete-1" and contains(@data-autocomplete-path, "form-test/autocomplete-1")]');
    $this->assertSession()
      ->elementNotExists('xpath', '//input[@id="edit-autocomplete-2" and contains(@data-autocomplete-path, "form-test/autocomplete-2/value")]');
    $user = $this->drupalCreateUser([
      'access autocomplete test',
    ]);
    $this->drupalLogin($user);
    $this->drupalGet('form-test/autocomplete');
    // Make sure that the autocomplete library is added.
    $this->assertSession()
      ->responseContains('core/misc/autocomplete.js');
    // Ensure that the user does have access to the autocompletion.
    $this->assertSession()
      ->elementExists('xpath', '//input[@id="edit-autocomplete-1" and contains(@data-autocomplete-path, "form-test/autocomplete-1")]');
    $this->assertSession()
      ->elementExists('xpath', '//input[@id="edit-autocomplete-2" and contains(@data-autocomplete-path, "form-test/autocomplete-2/value")]');
  }
  
  /**
   * Tests form element error messages.
   */
  public function testFormElementErrors() {
    $this->drupalGet('form_test/details-form');
    $this->submitForm([], 'Submit');
    $this->assertSession()
      ->pageTextContains('I am an error on the details element.');
  }
  
  /**
   * Tests summary attributes of details.
   */
  public function testDetailsSummaryAttributes() {
    $this->drupalGet('form-test/group-details');
    $this->assertSession()
      ->elementExists('css', 'summary[data-summary-attribute="test"]');
  }

}