public void MappingControllerGetUsesMappingProvider() { var mock = new Mock <IMappingProvider>(); MappingData value = new MappingData(); mock.Setup(x => x.GetCurrentMapping()).Returns(value); var controller = new MappingController(mock.Object); var result = controller.Get(); var resultData = result.As <JsonResult>(); resultData.StatusCode.Should().Equals(200); resultData.Value.Should().Equals(value); }