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[yaffs-website] / web / core / modules / system / tests / src / Functional / Menu / AssertMenuActiveTrailTrait.php

diff --git a/web/core/modules/system/tests/src/Functional/Menu/AssertMenuActiveTrailTrait.php b/web/core/modules/system/tests/src/Functional/Menu/AssertMenuActiveTrailTrait.php
new file mode 100644 (file)
index 0000000..c5d60e5
--- /dev/null
+++ b/web/core/modules/system/tests/src/Functional/Menu/AssertMenuActiveTrailTrait.php
@@ -0,0 +1,65 @@
+<?php
+
+namespace Drupal\Tests\system\Functional\Menu;
+
+use Drupal\Core\Url;
+
+/**
+ * Provides test assertions for verifying the active menu trail.
+ */
+trait AssertMenuActiveTrailTrait {
+
+  /**
+   * Assert that active trail exists in a menu tree output.
+   *
+   * @param array $tree
+   *   An associative array whose keys are link paths and whose
+   *   values are link titles (not sanitized) of an expected active trail in a
+   *   menu tree output on the page.
+   * @param bool $last_active
+   *   Whether the last link in $tree is expected to be active (TRUE)
+   *   or just to be in the active trail (FALSE).
+   */
+  protected function assertMenuActiveTrail($tree, $last_active) {
+    end($tree);
+    $active_link_path = key($tree);
+    $active_link_title = array_pop($tree);
+    $xpath = '';
+    if ($tree) {
+      $i = 0;
+      foreach ($tree as $link_path => $link_title) {
+        $part_xpath = (!$i ? '//' : '/following-sibling::ul/descendant::');
+        $part_xpath .= 'li[contains(@class, :class)]/a[contains(@href, :href) and contains(text(), :title)]';
+        $part_args = [
+          ':class' => 'menu-item--active-trail',
+          ':href' => Url::fromUri('base:' . $link_path)->toString(),
+          ':title' => $link_title,
+        ];
+        $xpath .= $this->buildXPathQuery($part_xpath, $part_args);
+        $i++;
+      }
+      $elements = $this->xpath($xpath);
+      $this->assertTrue(!empty($elements), 'Active trail to current page was found in menu tree.');
+
+      // Append prefix for active link asserted below.
+      $xpath .= '/following-sibling::ul/descendant::';
+    }
+    else {
+      $xpath .= '//';
+    }
+    $xpath_last_active = ($last_active ? 'and contains(@class, :class-active)' : '');
+    $xpath .= 'li[contains(@class, :class-trail)]/a[contains(@href, :href) ' . $xpath_last_active . 'and contains(text(), :title)]';
+    $args = [
+      ':class-trail' => 'menu-item--active-trail',
+      ':class-active' => 'is-active',
+      ':href' => Url::fromUri('base:' . $active_link_path)->toString(),
+      ':title' => $active_link_title,
+    ];
+    $elements = $this->xpath($xpath, $args);
+    $this->assertTrue(!empty($elements), format_string('Active link %title was found in menu tree, including active trail links %tree.', [
+      '%title' => $active_link_title,
+      '%tree' => implode(' » ', $tree),
+    ]));
+  }
+
+}