public void CanDailyMeanTemperatureJFKs() { // Arrange weatherRepository .Setup(x => x.DailyMeanTemperatureJFK()) .Returns(Task.FromResult(Mock.Of <IEnumerable <DateValueCounted> >())); // Act var result = weatherController.DailyMeanTemperatureJFK(); // Assert Assert.Equal(200, (result as OkObjectResult).StatusCode); }