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);
}