Looking back at the test equipment on Liaoning and 002 I think those were different in configuration to what we see here.These actually might be the testing equipment on the Liaoning and 002. We saw a bunch of lasers on green trucks during their sea trials.
More importantly, looking at the specific "laser turret" itself in this case, it seems rather large and well equipped to be merely for test/telemetry. Specifically, the turret itself is equipped with the main laser itself as well as two additional sensors -- which mimics the configuration on other recent contemporary laser platforms like AN/SEQ-3 -- one is likely to be an RF sensor and one is likely to be an EO sensor.
I'm tempted to say that this picture could show a laser weapon.