
FAIL setRemoteDescription(rollback) in have-remote-offer state should revert to stable state promise_test: Unhandled rejection with value: object "InvalidStateError: Description type incompatible with current signaling state"
PASS setRemoteDescription(rollback) from stable state should reject with InvalidStateError 
FAIL setRemoteDescription(rollback) should ignore invalid sdp content and succeed promise_test: Unhandled rejection with value: object "InvalidStateError: Description type incompatible with current signaling state"
FAIL local offer created before setRemoteDescription(remote offer) then rollback should still be usable promise_test: Unhandled rejection with value: object "InvalidStateError: Description type incompatible with current signaling state"