public async Task SetArmingOnAsync_Should_Not_Throw_ExceptionsAsync() { // Arrange var miioDevice = new Mock <IMiioTransport>(); miioDevice.Setup(x => x.SendMessageAsync(It.IsAny <string>())).Returns(Task.FromResult("{\"result\":[\"ok\"],\"id\":1}")); var miioGateway = new MiioGateway(miioDevice.Object); // Act await miioGateway.SetArmingOnAsync(); // Assert miioDevice.Verify(x => x.SendMessageAsync("{\"id\": 1, \"method\": \"set_arming\", \"params\": [\"on\"]}"), Times.Once()); }