public async Task ChangeApproveStatus_Valid_Test() { _cityMembersService.Setup(c => c.ToggleApproveStatusAsync(It.IsAny <int>())) .ReturnsAsync(new CityMembersDTO()); _logger.Setup(l => l.LogInformation(It.IsAny <string>())); CitiesController citycon = CreateCityController; var result = await citycon.ChangeApproveStatus(GetFakeID()); Assert.NotNull(result); Assert.IsInstanceOf <OkObjectResult>(result); }