| This test setting various attributes of a CSSOM elements to JavaScript null. | |
| TEST SUCCEEDED: The value was the string '.foo { color: black; }'. [tested CSSRule.cssText] | |
| TEST SUCCEEDED: The value was the string 'null'. [tested CSSStyleRule.selectorText] | |
| TEST SUCCEEDED: The value was the empty string. [tested CSSStyleDeclaration.cssText] | |
| TEST SUCCEEDED: The value was the empty string. [tested MediaList.mediaText] | |