public async Task GetAllWeatherReadingsOnDate() { var reading = new WeatherReading { Date = DateTime.Now, TemperatureC = 10, Humidity = 100, AirPressure = 1000, Place = new Place { Lat = 58, Long = 10, Name = "Aarhus" } }; DbContext.WeatherReading.Add(reading); DbContext.SaveChanges(); var result = await uut.WeatherReadingByDate(DateTime.Now.Date); Assert.IsInstanceOf <IEnumerable <WeatherReadingDto> >(result); }