public void GetArmingBlinkingTime_Returns_Integer() { // Arrange var miioDevice = new Mock <IMiioTransport>(); miioDevice.Setup(x => x.SendMessage(It.IsAny <string>())).Returns("{\"result\":[15],\"id\":1}"); var miioGateway = new MiioGateway(miioDevice.Object); // Act var armingBlinkingTime = miioGateway.GetArmingBlinkingTime(); // Assert miioDevice.Verify(x => x.SendMessage("{\"id\": 1, \"method\": \"get_device_prop\", \"params\": [\"lumi.0\",\"en_alarm_light\"]}"), Times.Once()); Assert.Equal(15, armingBlinkingTime); }