Index: /CKEditor/tests/dt/core/tools.html
===================================================================
--- /CKEditor/tests/dt/core/tools.html	(revision 5271)
+++ /CKEditor/tests/dt/core/tools.html	(revision 5272)
@@ -74,10 +74,15 @@
 			assert.areSame( 'Test\'s & "quote"', CKEDITOR.tools.htmlEncode( 'Test\'s & "quote"' ) );
 		},
-
+		
 		test_htmlEncode_3874 : function()
 		{
 			assert.areSame( 'line1\nline2', CKEDITOR.tools.htmlEncode( 'line1\nline2' ) );
 		},
-
+		
+		test_htmlEncodeAttr : function()
+		{
+			assert.areSame( '&lt;a b=&quot;c&quot;/&gt;', CKEDITOR.tools.htmlEncodeAttr( '<a b="c"/>' ) );
+		},
+		
 		test_cssStyleToDomStyle1 : function()
 		{