
PASS e.style['stroke-opacity'] = "-1" should set the property value 
PASS e.style['stroke-opacity'] = "0.5" should set the property value 
PASS e.style['stroke-opacity'] = "3" should set the property value 
PASS e.style['stroke-opacity'] = "-100%" should set the property value 
PASS e.style['stroke-opacity'] = "50%" should set the property value 
PASS e.style['stroke-opacity'] = "300%" should set the property value