diff --git a/core/modules/forum/forum.test b/core/modules/forum/forum.test
index 135f551..dbdadc3 100644
--- a/core/modules/forum/forum.test
+++ b/core/modules/forum/forum.test
@@ -590,3 +590,45 @@ class ForumTestCase extends DrupalWebTestCase {
     }
   }
 }
+
+/**
+ * Upgrade test for the forum module upgrade path.
+ */
+class ForumUpgradePathTestCase extends UpgradePathTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name'  => 'Forum upgrade test',
+      'description'  => 'Forum upgrade test.',
+      'group' => 'Upgrade path',
+    );
+  }
+
+  public function setUp() {
+    $this->databaseDumpFiles = array(
+      drupal_get_path('module', 'system') . '/tests/upgrade/drupal-7.filled.database.php.gz',
+    );
+
+    $modules = array('taxonomy', 'comment', 'forum', 'node');
+    parent::setUp();
+  }
+
+  /**
+   * Test a successful forum upgrade.
+   */
+  public function testForumUpgrade() {
+    $this->assertTrue($this->performUpgrade(), 'The upgrade was completed successfully.');
+
+    // Ensure that the forum module is enabled after upgrade.
+    $this->assertTrue(module_exists('forum'), 'Forum module enabled after upgrade.');
+
+    // Get schema info for forum_index table.
+    $schema = drupal_get_schema('forum_index');
+
+    $indexes = array('forum_topics', 'create', 'last_comment');
+    // Check all indexes exist in schema info.
+    foreach ($indexes as $index) {
+      $this->assertTrue(array_key_exists($index, $schema['indexes']), 'Index found in schema info');
+    }
+  }
+}