def test_validate(stc):
project = CStcSystem.Instance().GetObject("Project")
ctor = CScriptableCreator()
trf_mix = ctor.Create("StmTrafficMix", project)
val = command.validate([trf_mix.GetObjectHandle()], [], True, "fixed(1000)", 1, "FRAMES_PER_SECOND")
assert val == ""
