public void TestGetMaxPacketSize(int channel, int packageSize) { inner.GetMaxPacketSize(Arg.Any <int>()).Returns(packageSize); Assert.That(middleware.GetMaxPacketSize(channel), Is.EqualTo(packageSize)); inner.Received(1).GetMaxPacketSize(Arg.Is <int>(x => x == channel)); inner.Received(0).GetMaxPacketSize(Arg.Is <int>(x => x != channel)); }