This test legacy behavior that were replaced when a spec was written. This test is supposed to fail to set the style.

Testcase for bug 120293: setAttributeNode() does not set the new value to an existing attribute if specified attribute is in a different case.\nThe issue can be manually verified by ascertaining that a green colored block is displayed instead of a red one.
 
background-color specified with lowercase style attribute was: red and specified with uppercase style attribute is: green