tests: Make message more accurate
tests: Make message more accurate

This test is done on stream and session codecs.

kakaroto/farstream,shadeslayer/farstream,shadeslayer/farstream,kakaroto/farstream,shadeslayer/farstream,ahmedammar/skype_farsight2,tieto/farstream,tieto/farstream,kakaroto/farstream,pexip/farstream,tieto/farstream,ahmedammar/skype_farsight2,ahmedammar/skype_farsight2,pexip/farstream,tieto/farstream,tieto/farstream,shadeslayer/farstream,ahmedammar/skype_farsight2,kakaroto/farstream,pexip/farstream,pexip/farstream