class FunctionsTest in Drupal 8

Same name and namespace in other branches

9 core/modules/system/tests/src/Kernel/Theme/FunctionsTest.php \Drupal\Tests\system\Kernel\Theme\FunctionsTest
10 core/modules/system/tests/src/Kernel/Theme/FunctionsTest.php \Drupal\Tests\system\Kernel\Theme\FunctionsTest

Tests for common theme functions.

@group Theme

Hierarchy

class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements ServiceProviderInterface uses AssertContentTrait, AssertLegacyTrait, AssertHelperTrait, ConfigTestTrait, PhpunitCompatibilityTrait, RandomGeneratorTrait, TestRequirementsTrait
- class \Drupal\Tests\system\Kernel\Theme\FunctionsTest

Expanded class hierarchy of FunctionsTest

File

core/modules/system/tests/src/Kernel/Theme/FunctionsTest.php, line 18

Namespace

Drupal\Tests\system\Kernel\Theme

View source

class FunctionsTest extends KernelTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = [
    'router_test',
    'system',
  ];

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();

    // Enable the Classy theme.
    $this->container
      ->get('theme_installer')
      ->install([
      'classy',
    ]);
    $this
      ->config('system.theme')
      ->set('default', 'classy')
      ->save();
  }

  /**
   * Tests item-list.html.twig.
   */
  public function testItemList() {

    // Verify that empty items produce no output.
    $variables = [];
    $expected = '';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, 'Empty %callback generates no output.');

    // Verify that empty items with title produce no output.
    $variables = [];
    $variables['title'] = 'Some title';
    $expected = '';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, 'Empty %callback with title generates no output.');

    // Verify that empty items produce the empty string.
    $variables = [];
    $variables['empty'] = 'No items found.';
    $expected = '<div class="item-list">No items found.</div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, 'Empty %callback generates empty string.');

    // Verify that empty items produce the empty string with title.
    $variables = [];
    $variables['title'] = 'Some title';
    $variables['empty'] = 'No items found.';
    $expected = '<div class="item-list"><h3>Some title</h3>No items found.</div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, 'Empty %callback generates empty string with title.');

    // Verify that title set to 0 is output.
    $variables = [];
    $variables['title'] = 0;
    $variables['empty'] = 'No items found.';
    $expected = '<div class="item-list"><h3>0</h3>No items found.</div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, '%callback with title set to 0 generates a title.');

    // Verify that title set to a render array is output.
    $variables = [];
    $variables['title'] = [
      '#markup' => '<span>Render array</span>',
    ];
    $variables['empty'] = 'No items found.';
    $expected = '<div class="item-list"><h3><span>Render array</span></h3>No items found.</div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, '%callback with title set to a render array generates a title.');

    // Verify that empty text is not displayed when there are list items.
    $variables = [];
    $variables['title'] = 'Some title';
    $variables['empty'] = 'No items found.';
    $variables['items'] = [
      'Un',
      'Deux',
      'Trois',
    ];
    $expected = '<div class="item-list"><h3>Some title</h3><ul><li>Un</li><li>Deux</li><li>Trois</li></ul></div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected, '%callback does not print empty text when there are list items.');

    // Verify nested item lists.
    $variables = [];
    $variables['title'] = 'Some title';
    $variables['attributes'] = [
      'id' => 'parentlist',
    ];
    $variables['items'] = [
      // A plain string value forms an own item.
      'a',
      // Items can be fully-fledged render arrays with their own attributes.
      [
        '#wrapper_attributes' => [
          'id' => 'item-id-b',
        ],
        '#markup' => 'b',
        'childlist' => [
          '#theme' => 'item_list',
          '#attributes' => [
            'id' => 'blist',
          ],
          '#list_type' => 'ol',
          '#items' => [
            'ba',
            [
              '#markup' => 'bb',
              '#wrapper_attributes' => [
                'class' => [
                  'item-class-bb',
                ],
              ],
            ],
          ],
        ],
      ],
      // However, items can also be child #items.
      [
        '#markup' => 'c',
        'childlist' => [
          '#attributes' => [
            'id' => 'clist',
          ],
          'ca',
          [
            '#markup' => 'cb',
            '#wrapper_attributes' => [
              'class' => [
                'item-class-cb',
              ],
            ],
            'children' => [
              'cba',
              'cbb',
            ],
          ],
          'cc',
        ],
      ],
      // Use #markup to be able to specify #wrapper_attributes.
      [
        '#markup' => 'd',
        '#wrapper_attributes' => [
          'id' => 'item-id-d',
        ],
      ],
      // An empty item with attributes.
      [
        '#wrapper_attributes' => [
          'id' => 'item-id-e',
        ],
      ],
      // Lastly, another plain string item.
      'f',
    ];
    $inner_b = '<div class="item-list"><ol id="blist">';
    $inner_b .= '<li>ba</li>';
    $inner_b .= '<li class="item-class-bb">bb</li>';
    $inner_b .= '</ol></div>';
    $inner_cb = '<div class="item-list"><ul>';
    $inner_cb .= '<li>cba</li>';
    $inner_cb .= '<li>cbb</li>';
    $inner_cb .= '</ul></div>';
    $inner_c = '<div class="item-list"><ul id="clist">';
    $inner_c .= '<li>ca</li>';
    $inner_c .= '<li class="item-class-cb">cb' . $inner_cb . '</li>';
    $inner_c .= '<li>cc</li>';
    $inner_c .= '</ul></div>';
    $expected = '<div class="item-list">';
    $expected .= '<h3>Some title</h3>';
    $expected .= '<ul id="parentlist">';
    $expected .= '<li>a</li>';
    $expected .= '<li id="item-id-b">b' . $inner_b . '</li>';
    $expected .= '<li>c' . $inner_c . '</li>';
    $expected .= '<li id="item-id-d">d</li>';
    $expected .= '<li id="item-id-e"></li>';
    $expected .= '<li>f</li>';
    $expected .= '</ul></div>';
    $this
      ->assertThemeOutput('item_list', $variables, $expected);
  }

  /**
   * Tests links.html.twig.
   */
  public function testLinks() {

    // Turn off the query for the
    // \Drupal\Core\Utility\LinkGeneratorInterface::generate() method to compare
    // the active link correctly.
    $original_query = \Drupal::request()->query
      ->all();
    \Drupal::request()->query
      ->replace([]);

    // Verify that empty variables produce no output.
    $variables = [];
    $expected = '';
    $this
      ->assertThemeOutput('links', $variables, $expected, 'Empty %callback generates no output.');
    $variables = [];
    $variables['heading'] = 'Some title';
    $expected = '';
    $this
      ->assertThemeOutput('links', $variables, $expected, 'Empty %callback with heading generates no output.');

    // Verify that a list of links is properly rendered.
    $variables = [];
    $variables['attributes'] = [
      'id' => 'somelinks',
    ];
    $variables['links'] = [
      'a link' => [
        'title' => 'A <link>',
        'url' => Url::fromUri('base:a/link'),
      ],
      'plain text' => [
        'title' => 'Plain "text"',
      ],
      'html text' => [
        'title' => new FormattableMarkup('<span class="unescaped">@text</span>', [
          '@text' => 'potentially unsafe text that <should> be escaped',
        ]),
      ],
      'front page' => [
        'title' => 'Front page',
        'url' => Url::fromRoute('<front>'),
      ],
      'router-test' => [
        'title' => 'Test route',
        'url' => Url::fromRoute('router_test.1'),
      ],
      'query-test' => [
        'title' => 'Query test route',
        'url' => Url::fromRoute('router_test.1'),
        'query' => [
          'key' => 'value',
        ],
      ],
    ];
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li class="a-link"><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li class="plain-text">' . Html::escape('Plain "text"') . '</li>';
    $expected_links .= '<li class="html-text"><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li class="front-page"><a href="' . Url::fromRoute('<front>')
      ->toString() . '">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li class="router-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $expected_links .= '<li class="query-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';

    // Verify that passing a string as heading works.
    $variables['heading'] = 'Links heading';
    $expected_heading = '<h2>Links heading</h2>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Restore the original request's query.
    \Drupal::request()->query
      ->replace($original_query);

    // Verify that passing an array as heading works (core support).
    $variables['heading'] = [
      'text' => 'Links heading',
      'level' => 'h3',
      'attributes' => [
        'class' => [
          'heading',
        ],
      ],
    ];
    $expected_heading = '<h3 class="heading">Links heading</h3>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify that passing attributes for the heading works.
    $variables['heading'] = [
      'text' => 'Links heading',
      'level' => 'h3',
      'attributes' => [
        'id' => 'heading',
      ],
    ];
    $expected_heading = '<h3 id="heading">Links heading</h3>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify that passing attributes for the links work.
    $variables['links']['plain text']['attributes'] = [
      'class' => [
        'a/class',
      ],
    ];
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li class="a-link"><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li class="plain-text"><span class="a/class">' . Html::escape('Plain "text"') . '</span></li>';
    $expected_links .= '<li class="html-text"><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li class="front-page"><a href="' . Url::fromRoute('<front>')
      ->toString() . '">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li class="router-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $expected_links .= '<li class="query-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify the data- attributes for setting the "active" class on links.
    \Drupal::currentUser()
      ->setAccount(new UserSession([
      'uid' => 1,
    ]));
    $variables['set_active_class'] = TRUE;
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li class="a-link"><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li class="plain-text"><span class="a/class">' . Html::escape('Plain "text"') . '</span></li>';
    $expected_links .= '<li class="html-text"><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li data-drupal-link-system-path="&lt;front&gt;" class="front-page"><a href="' . Url::fromRoute('<front>')
      ->toString() . '" data-drupal-link-system-path="&lt;front&gt;">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li data-drupal-link-system-path="router_test/test1" class="router-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '" data-drupal-link-system-path="router_test/test1">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $encoded_query = Html::escape(Json::encode($query));
    $expected_links .= '<li data-drupal-link-query="' . $encoded_query . '" data-drupal-link-system-path="router_test/test1" class="query-test"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '" data-drupal-link-query="' . $encoded_query . '" data-drupal-link-system-path="router_test/test1">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);
  }

  /**
   * Tests links.html.twig using links with indexed keys.
   */
  public function testIndexedKeyedLinks() {

    // Turn off the query for the
    // \Drupal\Core\Utility\LinkGeneratorInterface::generate() method to compare
    // the active link correctly.
    $original_query = \Drupal::request()->query
      ->all();
    \Drupal::request()->query
      ->replace([]);

    // Verify that empty variables produce no output.
    $variables = [];
    $expected = '';
    $this
      ->assertThemeOutput('links', $variables, $expected, 'Empty %callback generates no output.');
    $variables = [];
    $variables['heading'] = 'Some title';
    $expected = '';
    $this
      ->assertThemeOutput('links', $variables, $expected, 'Empty %callback with heading generates no output.');

    // Verify that a list of links is properly rendered.
    $variables = [];
    $variables['attributes'] = [
      'id' => 'somelinks',
    ];
    $variables['links'] = [
      [
        'title' => 'A <link>',
        'url' => Url::fromUri('base:a/link'),
      ],
      [
        'title' => 'Plain "text"',
      ],
      [
        'title' => new FormattableMarkup('<span class="unescaped">@text</span>', [
          '@text' => 'potentially unsafe text that <should> be escaped',
        ]),
      ],
      [
        'title' => 'Front page',
        'url' => Url::fromRoute('<front>'),
      ],
      [
        'title' => 'Test route',
        'url' => Url::fromRoute('router_test.1'),
      ],
      [
        'title' => 'Query test route',
        'url' => Url::fromRoute('router_test.1'),
        'query' => [
          'key' => 'value',
        ],
      ],
    ];
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li>' . Html::escape('Plain "text"') . '</li>';
    $expected_links .= '<li><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li><a href="' . Url::fromRoute('<front>')
      ->toString() . '">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $expected_links .= '<li><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';

    // Verify that passing a string as heading works.
    $variables['heading'] = 'Links heading';
    $expected_heading = '<h2>Links heading</h2>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Restore the original request's query.
    \Drupal::request()->query
      ->replace($original_query);

    // Verify that passing an array as heading works (core support).
    $variables['heading'] = [
      'text' => 'Links heading',
      'level' => 'h3',
      'attributes' => [
        'class' => [
          'heading',
        ],
      ],
    ];
    $expected_heading = '<h3 class="heading">Links heading</h3>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify that passing attributes for the heading works.
    $variables['heading'] = [
      'text' => 'Links heading',
      'level' => 'h3',
      'attributes' => [
        'id' => 'heading',
      ],
    ];
    $expected_heading = '<h3 id="heading">Links heading</h3>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify that passing attributes for the links work.
    $variables['links'][1]['attributes'] = [
      'class' => [
        'a/class',
      ],
    ];
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li><span class="a/class">' . Html::escape('Plain "text"') . '</span></li>';
    $expected_links .= '<li><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li><a href="' . Url::fromRoute('<front>')
      ->toString() . '">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $expected_links .= '<li><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);

    // Verify the data- attributes for setting the "active" class on links.
    \Drupal::currentUser()
      ->setAccount(new UserSession([
      'uid' => 1,
    ]));
    $variables['set_active_class'] = TRUE;
    $expected_links = '';
    $expected_links .= '<ul id="somelinks">';
    $expected_links .= '<li><a href="' . Url::fromUri('base:a/link')
      ->toString() . '">' . Html::escape('A <link>') . '</a></li>';
    $expected_links .= '<li><span class="a/class">' . Html::escape('Plain "text"') . '</span></li>';
    $expected_links .= '<li><span class="unescaped">' . Html::escape('potentially unsafe text that <should> be escaped') . '</span></li>';
    $expected_links .= '<li data-drupal-link-system-path="&lt;front&gt;"><a href="' . Url::fromRoute('<front>')
      ->toString() . '" data-drupal-link-system-path="&lt;front&gt;">' . Html::escape('Front page') . '</a></li>';
    $expected_links .= '<li data-drupal-link-system-path="router_test/test1"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1') . '" data-drupal-link-system-path="router_test/test1">' . Html::escape('Test route') . '</a></li>';
    $query = [
      'key' => 'value',
    ];
    $encoded_query = Html::escape(Json::encode($query));
    $expected_links .= '<li data-drupal-link-query="' . $encoded_query . '" data-drupal-link-system-path="router_test/test1"><a href="' . \Drupal::urlGenerator()
      ->generate('router_test.1', $query) . '" data-drupal-link-query="' . $encoded_query . '" data-drupal-link-system-path="router_test/test1">' . Html::escape('Query test route') . '</a></li>';
    $expected_links .= '</ul>';
    $expected = $expected_heading . $expected_links;
    $this
      ->assertThemeOutput('links', $variables, $expected);
  }

  /**
   * Test the use of Link::preRenderLinks() on a nested array of links.
   *
   * @see \Drupal\Core\Render\Element\Link::preRenderLinks()
   */
  public function testDrupalPreRenderLinks() {

    // Define the base array to be rendered, containing a variety of different
    // kinds of links.
    $base_array = [
      '#theme' => 'links',
      '#pre_render' => [
        [
          Link::class,
          'preRenderLinks',
        ],
      ],
      '#links' => [
        'parent_link' => [
          'title' => 'Parent link original',
          'url' => Url::fromRoute('router_test.1'),
        ],
      ],
      'first_child' => [
        '#theme' => 'links',
        '#links' => [
          // This should be rendered if 'first_child' is rendered separately,
          // but ignored if the parent is being rendered (since it duplicates
          // one of the parent's links).
          'parent_link' => [
            'title' => 'Parent link copy',
            'url' => Url::fromRoute('router_test.6'),
          ],
          // This should always be rendered.
          'first_child_link' => [
            'title' => 'First child link',
            'url' => Url::fromRoute('router_test.7'),
          ],
        ],
      ],
      // This should always be rendered as part of the parent.
      'second_child' => [
        '#theme' => 'links',
        '#links' => [
          'second_child_link' => [
            'title' => 'Second child link',
            'url' => Url::fromRoute('router_test.8'),
          ],
        ],
      ],
      // This should never be rendered, since the user does not have access to
      // it.
      'third_child' => [
        '#theme' => 'links',
        '#links' => [
          'third_child_link' => [
            'title' => 'Third child link',
            'url' => Url::fromRoute('router_test.9'),
          ],
        ],
        '#access' => FALSE,
      ],
    ];

    // Start with a fresh copy of the base array, and try rendering the entire
    // thing. We expect a single <ul> with appropriate links contained within
    // it.
    $render_array = $base_array;
    $html = \Drupal::service('renderer')
      ->renderRoot($render_array);
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 3, 'Three "li" tags found in the rendered HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'First child link', 'Second expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(2)->nodeValue, 'Second child link', 'Third expected link found.');
    $this
      ->assertStringNotContainsString('Parent link copy', $html, '"Parent link copy" link not found.');
    $this
      ->assertStringNotContainsString('Third child link', $html, '"Third child link" link not found.');

    // Now render 'first_child', followed by the rest of the links, and make
    // sure we get two separate <ul>'s with the appropriate links contained
    // within each.
    $render_array = $base_array;
    $child_html = \Drupal::service('renderer')
      ->renderRoot($render_array['first_child']);
    $parent_html = \Drupal::service('renderer')
      ->renderRoot($render_array);

    // First check the child HTML.
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($child_html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered child HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered child HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link copy', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'First child link', 'Second expected link found.');

    // Then check the parent HTML.
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($parent_html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered parent HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered parent HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'Second child link', 'Second expected link found.');
    $this
      ->assertStringNotContainsString('First child link', $parent_html, '"First child link" link not found.');
    $this
      ->assertStringNotContainsString('Third child link', $parent_html, '"Third child link" link not found.');
  }

  /**
   * Test the use of drupal_pre_render_links() on a nested array of links.
   *
   * @group legacy
   *
   * @expectedDeprecation Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was drupal_pre_render_links. Support for this callback implementation is deprecated in 8.8.0 and will be removed in Drupal 9.0.0. See https://www.drupal.org/node/2966725
   * @expectedDeprecation drupal_pre_render_links() is deprecated in Drupal 8.8.0 and will be removed before Drupal 9.0.0. Use \Drupal\Core\Render\Element\Link::preRenderLinks() instead. See https://www.drupal.org/node/2966725
   */
  public function testDrupalPreRenderLinksLegacy() {

    // Define the base array to be rendered, containing a variety of different
    // kinds of links.
    $base_array = [
      '#theme' => 'links',
      '#pre_render' => [
        'drupal_pre_render_links',
      ],
      '#links' => [
        'parent_link' => [
          'title' => 'Parent link original',
          'url' => Url::fromRoute('router_test.1'),
        ],
      ],
      'first_child' => [
        '#theme' => 'links',
        '#links' => [
          // This should be rendered if 'first_child' is rendered separately,
          // but ignored if the parent is being rendered (since it duplicates
          // one of the parent's links).
          'parent_link' => [
            'title' => 'Parent link copy',
            'url' => Url::fromRoute('router_test.6'),
          ],
          // This should always be rendered.
          'first_child_link' => [
            'title' => 'First child link',
            'url' => Url::fromRoute('router_test.7'),
          ],
        ],
      ],
      // This should always be rendered as part of the parent.
      'second_child' => [
        '#theme' => 'links',
        '#links' => [
          'second_child_link' => [
            'title' => 'Second child link',
            'url' => Url::fromRoute('router_test.8'),
          ],
        ],
      ],
      // This should never be rendered, since the user does not have access to
      // it.
      'third_child' => [
        '#theme' => 'links',
        '#links' => [
          'third_child_link' => [
            'title' => 'Third child link',
            'url' => Url::fromRoute('router_test.9'),
          ],
        ],
        '#access' => FALSE,
      ],
    ];

    // Start with a fresh copy of the base array, and try rendering the entire
    // thing. We expect a single <ul> with appropriate links contained within
    // it.
    $render_array = $base_array;
    $html = \Drupal::service('renderer')
      ->renderRoot($render_array);
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 3, 'Three "li" tags found in the rendered HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'First child link', 'Second expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(2)->nodeValue, 'Second child link', 'Third expected link found.');
    $this
      ->assertIdentical(strpos($html, 'Parent link copy'), FALSE, '"Parent link copy" link not found.');
    $this
      ->assertIdentical(strpos($html, 'Third child link'), FALSE, '"Third child link" link not found.');

    // Now render 'first_child', followed by the rest of the links, and make
    // sure we get two separate <ul>'s with the appropriate links contained
    // within each.
    $render_array = $base_array;
    $child_html = \Drupal::service('renderer')
      ->renderRoot($render_array['first_child']);
    $parent_html = \Drupal::service('renderer')
      ->renderRoot($render_array);

    // First check the child HTML.
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($child_html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered child HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered child HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link copy', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'First child link', 'Second expected link found.');

    // Then check the parent HTML.
    $dom = new \DOMDocument();
    $dom
      ->loadHTML($parent_html);
    $this
      ->assertEqual($dom
      ->getElementsByTagName('ul')->length, 1, 'One "ul" tag found in the rendered parent HTML.');
    $list_elements = $dom
      ->getElementsByTagName('li');
    $this
      ->assertEqual($list_elements->length, 2, 'Two "li" tags found in the rendered parent HTML.');
    $this
      ->assertEqual($list_elements
      ->item(0)->nodeValue, 'Parent link original', 'First expected link found.');
    $this
      ->assertEqual($list_elements
      ->item(1)->nodeValue, 'Second child link', 'Second expected link found.');
    $this
      ->assertIdentical(strpos($parent_html, 'First child link'), FALSE, '"First child link" link not found.');
    $this
      ->assertIdentical(strpos($parent_html, 'Third child link'), FALSE, '"Third child link" link not found.');
  }

  /**
   * Tests theme_image().
   */
  public function testImage() {

    // Test that data URIs work with theme_image().
    $variables = [];
    $variables['uri'] = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==';
    $variables['alt'] = 'Data URI image of a red dot';
    $expected = '<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Data URI image of a red dot" />' . "\n";
    $this
      ->assertThemeOutput('image', $variables, $expected);
  }

}

Members

Name	Modifiers	Type	Description	Overrides
AssertContentTrait::$content	protected	property	The current raw content.
AssertContentTrait::$drupalSettings	protected	property	The drupalSettings value from the current raw $content.
AssertContentTrait::$elements	protected	property	The XML structure parsed from the current raw $content.	1
AssertContentTrait::$plainTextContent	protected	property	The plain-text content of raw $content (text nodes).
AssertContentTrait::assertEscaped	protected	function	Passes if the raw text IS found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertField	protected	function	Asserts that a field exists with the given name or ID.
AssertContentTrait::assertFieldById	protected	function	Asserts that a field exists with the given ID and value.
AssertContentTrait::assertFieldByName	protected	function	Asserts that a field exists with the given name and value.
AssertContentTrait::assertFieldByXPath	protected	function	Asserts that a field exists in the current page by the given XPath.
AssertContentTrait::assertFieldChecked	protected	function	Asserts that a checkbox field in the current page is checked.
AssertContentTrait::assertFieldsByValue	protected	function	Asserts that a field exists in the current page with a given Xpath result.
AssertContentTrait::assertLink	protected	function	Passes if a link with the specified label is found.
AssertContentTrait::assertLinkByHref	protected	function	Passes if a link containing a given href (part) is found.
AssertContentTrait::assertNoDuplicateIds	protected	function	Asserts that each HTML ID is used for just a single element.
AssertContentTrait::assertNoEscaped	protected	function	Passes if the raw text IS NOT found escaped on the loaded page, fail otherwise.
AssertContentTrait::assertNoField	protected	function	Asserts that a field does not exist with the given name or ID.
AssertContentTrait::assertNoFieldById	protected	function	Asserts that a field does not exist with the given ID and value.
AssertContentTrait::assertNoFieldByName	protected	function	Asserts that a field does not exist with the given name and value.
AssertContentTrait::assertNoFieldByXPath	protected	function	Asserts that a field does not exist or its value does not match, by XPath.
AssertContentTrait::assertNoFieldChecked	protected	function	Asserts that a checkbox field in the current page is not checked.
AssertContentTrait::assertNoLink	protected	function	Passes if a link with the specified label is not found.
AssertContentTrait::assertNoLinkByHref	protected	function	Passes if a link containing a given href (part) is not found.
AssertContentTrait::assertNoLinkByHrefInMainRegion	protected	function	Passes if a link containing a given href is not found in the main region.
AssertContentTrait::assertNoOption	protected	function	Asserts that a select option in the current page does not exist.
AssertContentTrait::assertNoOptionSelected	protected	function	Asserts that a select option in the current page is not checked.
AssertContentTrait::assertNoPattern	protected	function	Triggers a pass if the perl regex pattern is not found in raw content.
AssertContentTrait::assertNoRaw	protected	function	Passes if the raw text is NOT found on the loaded page, fail otherwise.
AssertContentTrait::assertNoText	protected	function	Passes if the page (with HTML stripped) does not contains the text.
AssertContentTrait::assertNoTitle	protected	function	Pass if the page title is not the given string.
AssertContentTrait::assertNoUniqueText	protected	function	Passes if the text is found MORE THAN ONCE on the text version of the page.
AssertContentTrait::assertOption	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertOptionByText	protected	function	Asserts that a select option with the visible text exists.
AssertContentTrait::assertOptionSelected	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionSelectedWithDrupalSelector	protected	function	Asserts that a select option in the current page is checked.
AssertContentTrait::assertOptionWithDrupalSelector	protected	function	Asserts that a select option in the current page exists.
AssertContentTrait::assertPattern	protected	function	Triggers a pass if the Perl regex pattern is found in the raw content.
AssertContentTrait::assertRaw	protected	function	Passes if the raw text IS found on the loaded page, fail otherwise.
AssertContentTrait::assertText	protected	function	Passes if the page (with HTML stripped) contains the text.
AssertContentTrait::assertTextHelper	protected	function	Helper for assertText and assertNoText.
AssertContentTrait::assertTextPattern	protected	function	Asserts that a Perl regex pattern is found in the plain-text content.
AssertContentTrait::assertThemeOutput	protected	function	Asserts themed output.
AssertContentTrait::assertTitle	protected	function	Pass if the page title is the given string.
AssertContentTrait::assertUniqueText	protected	function	Passes if the text is found ONLY ONCE on the text version of the page.
AssertContentTrait::assertUniqueTextHelper	protected	function	Helper for assertUniqueText and assertNoUniqueText.
AssertContentTrait::buildXPathQuery	protected	function	Builds an XPath query.
AssertContentTrait::constructFieldXpath	protected	function	Helper: Constructs an XPath for the given set of attributes and value.
AssertContentTrait::cssSelect	protected	function	Searches elements using a CSS selector in the raw content.
AssertContentTrait::getAllOptions	protected	function	Get all option elements, including nested options, in a select.
AssertContentTrait::getDrupalSettings	protected	function	Gets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::getRawContent	protected	function	Gets the current raw content.
AssertContentTrait::getSelectedItem	protected	function	Get the selected value from a select field.
AssertContentTrait::getTextContent	protected	function	Retrieves the plain-text content from the current raw content.
AssertContentTrait::getUrl	protected	function	Get the current URL from the cURL handler.	1
AssertContentTrait::parse	protected	function	Parse content returned from curlExec using DOM and SimpleXML.
AssertContentTrait::removeWhiteSpace	protected	function	Removes all white-space between HTML tags from the raw content.
AssertContentTrait::setDrupalSettings	protected	function	Sets the value of drupalSettings for the currently-loaded page.
AssertContentTrait::setRawContent	protected	function	Sets the raw content (e.g. HTML).
AssertContentTrait::xpath	protected	function	Performs an xpath search on the contents of the internal browser.
AssertHelperTrait::castSafeStrings	protected static	function	Casts MarkupInterface objects into strings.
AssertLegacyTrait::assert	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue() instead.
AssertLegacyTrait::assertEqual	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals() instead.
AssertLegacyTrait::assertIdentical	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertSame() instead.
AssertLegacyTrait::assertIdenticalObject	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertEquals() instead.
AssertLegacyTrait::assertNotEqual	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertNotEquals() instead.
AssertLegacyTrait::assertNotIdentical	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertNotSame() instead.
AssertLegacyTrait::pass	protected	function	Deprecated Scheduled for removal in Drupal 10.0.0. Use self::assertTrue() instead.
AssertLegacyTrait::verbose	protected	function
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.
FunctionsTest::$modules	public static	property	Modules to enable. Overrides KernelTestBase::$modules
FunctionsTest::setUp	protected	function	Overrides KernelTestBase::setUp
FunctionsTest::testDrupalPreRenderLinks	public	function	Test the use of Link::preRenderLinks() on a nested array of links.
FunctionsTest::testDrupalPreRenderLinksLegacy	public	function	Test the use of drupal_pre_render_links() on a nested array of links.
FunctionsTest::testImage	public	function	Tests theme_image().
FunctionsTest::testIndexedKeyedLinks	public	function	Tests links.html.twig using links with indexed keys.
FunctionsTest::testItemList	public	function	Tests item-list.html.twig.
FunctionsTest::testLinks	public	function	Tests links.html.twig.
KernelTestBase::$backupGlobals	protected	property	Back up and restore any global variables that may be changed by tests.
KernelTestBase::$backupStaticAttributes	protected	property	Back up and restore static class properties that may be changed by tests.
KernelTestBase::$backupStaticAttributesBlacklist	protected	property	Contains a few static class properties for performance.
KernelTestBase::$classLoader	protected	property
KernelTestBase::$configImporter	protected	property	@todo Move into Config test base class.	7
KernelTestBase::$configSchemaCheckerExclusions	protected static	property	An array of config object names that are excluded from schema checking.
KernelTestBase::$container	protected	property
KernelTestBase::$databasePrefix	protected	property
KernelTestBase::$preserveGlobalState	protected	property	Do not forward any global state from the parent process to the processes that run the actual tests.
KernelTestBase::$root	protected	property	The app root.
KernelTestBase::$runTestInSeparateProcess	protected	property	Kernel tests are run in separate processes because they allow autoloading of code from extensions. Running the test in a separate process isolates this behavior from other tests. Subclasses should not override this property.
KernelTestBase::$siteDirectory	protected	property
KernelTestBase::$strictConfigSchema	protected	property	Set to TRUE to strict check all configuration saved.	6
KernelTestBase::$vfsRoot	protected	property	The virtual filesystem root directory.
KernelTestBase::assertPostConditions	protected	function		1
KernelTestBase::bootEnvironment	protected	function	Bootstraps a basic test environment.
KernelTestBase::bootKernel	private	function	Bootstraps a kernel for a test.
KernelTestBase::config	protected	function	Configuration accessor for tests. Returns non-overridden configuration.
KernelTestBase::disableModules	protected	function	Disables modules for this test.
KernelTestBase::enableModules	protected	function	Enables modules for this test.
KernelTestBase::getConfigSchemaExclusions	protected	function	Gets the config schema exclusions for this test.
KernelTestBase::getDatabaseConnectionInfo	protected	function	Returns the Database connection info to be used for this test.	1
KernelTestBase::getDatabasePrefix	public	function
KernelTestBase::getExtensionsForModules	private	function	Returns Extension objects for $modules to enable.
KernelTestBase::getModulesToEnable	private static	function	Returns the modules to enable for this test.
KernelTestBase::initFileCache	protected	function	Initializes the FileCache component.
KernelTestBase::installConfig	protected	function	Installs default configuration for a given list of modules.
KernelTestBase::installEntitySchema	protected	function	Installs the storage schema for a specific entity type.
KernelTestBase::installSchema	protected	function	Installs database tables from a module schema definition.
KernelTestBase::isTestInIsolation Deprecated	protected	function	Returns whether the current test method is running in a separate process.
KernelTestBase::prepareTemplate	protected	function
KernelTestBase::register	public	function	Registers test-specific services. Overrides ServiceProviderInterface::register	26
KernelTestBase::render	protected	function	Renders a render array.	1
KernelTestBase::setInstallProfile	protected	function	Sets the install profile and rebuilds the container to update it.
KernelTestBase::setSetting	protected	function	Sets an in-memory Settings variable.
KernelTestBase::setUpBeforeClass	public static	function		1
KernelTestBase::setUpFilesystem	protected	function	Sets up the filesystem, so things like the file directory.	2
KernelTestBase::stop	protected	function	Stops test execution.
KernelTestBase::tearDown	protected	function		6
KernelTestBase::tearDownCloseDatabaseConnection	public	function	@after
KernelTestBase::vfsDump	protected	function	Dumps the current state of the virtual filesystem to STDOUT.
KernelTestBase::__get Deprecated	public	function	BC: Automatically resolve former KernelTestBase class properties.
KernelTestBase::__sleep	public	function	Prevents serializing any properties.
PhpunitCompatibilityTrait::getMock Deprecated	public	function	Returns a mock object for the specified class using the available method.
PhpunitCompatibilityTrait::setExpectedException Deprecated	public	function	Compatibility layer for PHPUnit 6 to support PHPUnit 4 code.
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.	1
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.
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.	1
TestRequirementsTrait::getDrupalRoot	protected static	function	Returns the Drupal root directory.

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class FunctionsTest in Drupal 8

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