Issue #3270984 by DamienMcKenna: Test meta tags don't work.

CHANGELOG.txt

@@ -5,6 +5,7 @@ Metatag 7.x-1.x-dev, xxxx-xx-xx
 #3106872 by DamienMcKenna: Change uses of http:// to https://.
 #3243694 by DamienMcKenna, Kasey_MK: Avoid similar-sounding links with different
   purposes.
+#3270984 by DamienMcKenna: Test meta tags don't work.
 
 
 Metatag 7.x-1.28, 2021-07-12

tests/MetatagTestTestTestMetatags.test

+<?php
+
+/**
+ * @file
+ * Test the test meta tags from the Metatag Test module.
+ */
+
+/**
+ * Test the test meta tags from the Metatag Test module.
+ */
+class MetatagTestTestTestMetatags extends MetatagTagsTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function getInfo() {
+    return array(
+      'name' => 'Test metatags',
+      'description' => "Tests the test meta tags from the metatag_test module.",
+      'group' => 'Metatag',
+      'dependencies' => array('ctools', 'devel', 'token'),
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public $tags = array(
+    'test:foo',
+    'test:multifoo',
+  );
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTestTagName($tag_name) {
+    return str_replace('_', ':', $tag_name);
+  }
+
+}

tests/metatag_test.info

@@ -6,3 +6,6 @@ core = 7.x
 hidden = TRUE
 
 dependencies[] = metatag:metatag
+
+; Custom tests for this module.
+files[] = MetatagTestTestTestMetatags.test

tests/metatag_test.metatag.inc

@@ -59,12 +59,20 @@ function metatag_test_metatag_info() {
     ),
   );
 
-  $info['test:foo'] = array(
+  $info['tags']['test:foo'] = array(
     'label' => t('Foo meta tag'),
     'description' => t('Testing metatag.'),
     'class' => 'DrupalTextMetaTag',
     'group' => 'testing',
   );
 
+  $info['tags']['test:multifoo'] = array(
+    'label' => t('Multi foo meta tag'),
+    'description' => t('Testing metatag.'),
+    'class' => 'DrupalTextMetaTag',
+    'group' => 'testing',
+    'multiple' => TRUE,
+  );
+
   return $info;
 }