[cssUnparsedValue-indexed-getter-setter.html]
[Getting invalid index in CSSUnparsedValue returns undefined]
expected: FAIL
[Can update fragment in CSSUnparsedValue to a String]
expected: FAIL
[Can update fragment in CSSUnparsedValue to a CSSVariableReference]
expected: FAIL
[Setting one past the last fragment in a CSSUnparsedValue to a String appends the new fragment]
expected: FAIL
[Setting one past the last fragment in a CSSUnparsedValue to a CSSVariableReferenceValue appends the new fragment]
expected: FAIL
[Setting out of range index in CSSUnparsedValue throws RangeError]
expected: FAIL