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diff core/modules/system/src/Tests/Theme/FunctionsTest.php @ 0:4c8ae668cc8c

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Initial import (non-working)
author Chris Cannam
date Wed, 29 Nov 2017 16:09:58 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/system/src/Tests/Theme/FunctionsTest.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,518 @@
+<?php
+
+namespace Drupal\system\Tests\Theme;
+
+use Drupal\Component\Serialization\Json;
+use Drupal\Component\Utility\Html;
+use Drupal\Component\Utility\SafeMarkup;
+use Drupal\Core\Session\UserSession;
+use Drupal\Core\Url;
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Tests for common theme functions.
+ *
+ * @group Theme
+ */
+class FunctionsTest extends WebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = ['router_test'];
+
+  /**
+   * 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' => SafeMarkup::format('<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' => SafeMarkup::format('<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 drupal_pre_render_links() on a nested array of links.
+   */
+  public function testDrupalPreRenderLinks() {
+    // 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);
+  }
+
+}