def mixer_stub(moxer):
mixer_mock = moxer.CreateMock(Mixer)
# moxer.StubOutWithMock(Mixer, '__init__')
# Mixer.__init__(mox.IgnoreArg())
moxer.StubOutWithMock(Mixer, '__new__')
Mixer.__new__(Mixer, mox.IgnoreArg()).AndReturn(mixer_mock)
return mixer_mock
