public async Task MeasurementService_GetDeviceDataAsync_Tests()
        {
            //Valid Tests
            repoMock.Setup(t => t.GetContentAsync(It.IsAny <string>())).ReturnsAsync("2018-11-29T07:54:55,,03");
            var result = await service.GetDeviceDataAsync("deviceId", DateTime.Now);

            Assert.IsType <List <SensorData> >(result);

            //Invalid Tests
            repoMock.Setup(t => t.GetContentAsync(It.IsAny <string>())).ThrowsAsync(new Exception());
            result = await service.GetDeviceDataAsync("deviceId", DateTime.Now);

            Assert.Null(result);
        }