diff --git a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
index 0384148..3bf294c 100644
--- a/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
+++ b/core/tests/Drupal/Tests/Core/Ajax/AjaxCommandsTest.php
@@ -329,6 +329,31 @@ public function testOpenDialogCommand() {
   }
 
   /**
+   * Tests that OpenDialogCommand objects title can be changed.
+   */
+  public function testOpenDialogCommandSetTitle() {
+    $command = new OpenDialogCommand('#some-dialog', 'Title', '<p>Text!</p>', array(
+      'url' => FALSE,
+      'width' => 500,
+    ));
+
+    $expected = array(
+      'command' => 'openDialog',
+      'selector' => '#some-dialog',
+      'settings' => NULL,
+      'data' => '<p>Text!</p>',
+      'dialogOptions' => array(
+        'url' => FALSE,
+        'width' => 500,
+        'title' => 'newTitle',
+        'modal' => FALSE,
+      ),
+    );
+    $command->setDialogTitle('newTitle');
+    $this->assertEquals($command->render(), $expected, "OpenDialogCommand::render() didn't return the expected array.");
+  }
+
+  /**
    * Tests that OpenModalDialogCommand objects can be constructed and rendered.
    */
   public function testOpenModalDialogCommand() {