commit ec0c262277ef091e7b14a19b5f979f2dc8f5e729
Author: Lee Rowlands <lee.rowlands@previousnext.com.au>
Date:   Tue Jan 6 13:06:05 2015 +1000

    Patch 3

diff --git a/core/modules/menu_ui/src/Tests/MenuTest.php b/core/modules/menu_ui/src/Tests/MenuTest.php
index 2976af3..64e3298 100644
--- a/core/modules/menu_ui/src/Tests/MenuTest.php
+++ b/core/modules/menu_ui/src/Tests/MenuTest.php
@@ -890,6 +890,11 @@ protected function doTestMenuBlock() {
     $this->drupalGet('admin/structure/block/manage/' . $block_id);
     $this->assertFieldByName('settings[depth]', 3);
     $this->assertFieldByName('settings[level]', 2);
+    // Reset settings.
+    $this->drupalPostForm(NULL, [
+      'settings[depth]' => 1,
+      'settings[level]' => 1,
+    ], t('Save block'));
   }
 
 }