public async Task GetCurrentLocationByVehicleIdAsync_WithVehicleIdExists_ReturnLocationResponse() { // Arrange var vehicleId = 1; var location = new Location { Id = Guid.NewGuid(), VehicleId = 1, Latitude = 13.788571, Longitude = 100.538034, UpdateDate = new DateTime(2020, 3, 1) }; locationsRepository.GetCurrentLocationByVehicleIdAsync(Arg.Any <int>()).Returns(Task.FromResult(location)); // Act var response = await locationsService.GetCurrentLocationByVehicleIdAsync(vehicleId); // Assert Assert.NotNull(response); Assert.IsType <LocationResponse>(response); Assert.Equal(1, response.VehicleId); Assert.Equal(13.788571, response.Latitude); Assert.Equal(100.538034, response.Longitude); }