public async Task MakeDepositTest() { var dto = new ChangeBalanceDto { AccountId = new Guid("bd877de3-d2c9-4237-b5ca-08bd3ba56cd8"), Amount = 200 }; var result = await _controller.MakeDeposit(dto); var contentResult = result as OkNegotiatedContentResult <BankAccount>; Assert.IsNotNull(contentResult); Assert.AreEqual(1200, _fakeContext.BankAccounts.ElementAt(0).Balance); }