
FAIL setLocalDescription(rollback) from have-local-offer state should reset back to stable state promise_test: Unhandled rejection with value: object "InvalidStateError: Description type incompatible with current signaling state"
PASS setLocalDescription(rollback) from stable state should reject with InvalidStateError 
PASS setLocalDescription(rollback) after setting answer description should reject with InvalidStateError 
FAIL setLocalDescription(rollback) should ignore invalid sdp content and succeed promise_test: Unhandled rejection with value: object "InvalidStateError: Description type incompatible with current signaling state"