
FAIL Deleting a property not in the css rule is a no-op undefined is not an object (evaluating 'styleMap.delete')
FAIL Deleting a property in the css rule removes it from the css rule undefined is not an object (evaluating 'styleMap.delete')
FAIL Deleting a custom property in the css rule removes it from the css rule undefined is not an object (evaluating 'styleMap.delete')
FAIL Deleting a list-valued property in the css rule removes it from the css rule undefined is not an object (evaluating 'styleMap.delete')
FAIL Declared StylePropertyMap.delete is not case-sensitive undefined is not an object (evaluating 'styleMap.delete')