
FAIL sheet_property assert_own_property: expected property "sheet" missing
PASS sheet_property_updates 
FAIL CSSStyleSheet_properties undefined is not an object (evaluating 'object.hasOwnProperty')
FAIL CSSStyleSheet_property_values undefined is not an object (evaluating 'styleSheet.ownerRule')
FAIL StyleSheet_properties undefined is not an object (evaluating 'object.hasOwnProperty')
FAIL StyleSheet_property_values undefined is not an object (evaluating 'styleSheet.type')