public void GetSupportedActions_SendValidRequest() { //Arrange string commandName = "supportedactions"; IRestRequest sentRequest = null; var commandSenderMock = new Mock <ICommandSender>(); commandSenderMock .Setup(x => x.ExecuteRequest <StringListResponse>(It.IsAny <string>(), It.IsAny <RestRequest>())) .Callback((string baseUrl, IRestRequest request) => sentRequest = request) .Returns(new StringListResponse(new List <string> { "test" })); var device = new FilterWheel(_deviceConfiguration, commandSenderMock.Object); //Act device.GetSupportedActions(); //Assert Assert.Equal(Method.GET, sentRequest.Method); AssertCommonParameters(sentRequest.Parameters, _deviceConfiguration, commandName); }