public async Task TestCreate() { CustomerMock customer = new CustomerMock { Email = "*****@*****.**", Phone = "65421895154", Lastname = "Maria", Firstname = "Julia", Genre = "Autres", Address = null, ZipCode = "6854", City = "Limoges" }; var actionResult = await _controller.CreateItem(customer); var result = actionResult.Result as ObjectResult; var okResult = result.Should().BeOfType <CreatedResult>().Subject; }