
PASS Animation can be constructed with null effect and null timeline 
PASS Animation can be constructed with null effect and non-null timeline 
PASS Animation can be constructed with null effect and no timeline parameter 
PASS Animation can be constructed with non-null effect and null timeline 
PASS Animation can be constructed with non-null effect and non-null timeline 
PASS Animation can be constructed with non-null effect and no timeline parameter 
PASS Animation constructed by an effect with null target runs normally 
PASS Animation constructed with a keyframe that target element is in iframe