c# - Rhino.Mocks.Exceptions.ExpectationViolationException : Expected #1, 实际 #2

我有两个测试。第一次测试工作正常。第二次测试看起来像第一次测试。但是，当我运行第二个测试时，出现异常。

第一个测试:

public void GetCurrentBalance_Should_getting_rigth_balanse()
{
    // Arrange
    double balance = 10;

    var mocks = new MockRepository();
    IUnitOfWork unitOfWork = mocks.Stub<IUnitOfWork>();
    unitOfWork.Stub(svc => svc.AccountRepository.Get()).Return(new List<Account> {new Account { Balance = balance }});

    AccountService accountService = new AccountService(unitOfWork);

    // Act
    mocks.ReplayAll();
    var result = accountService.GetCurrentBalance();

    //Assert
    Assert.AreEqual(balance, result);
}

第二个测试:

public void WithdrawMoney_Balance_should_decrease_when_money_been_withdrawn()
{
    // Arrange
    double balance = 10;

    var mocks = new MockRepository();
    IUnitOfWork unitOfWork = mocks.Stub<IUnitOfWork>();
    unitOfWork.Stub(svc => svc.AccountRepository.Get()).Return(new List<Account> { new Account { Balance = balance } });

    AccountService accountService = new AccountService(unitOfWork);

    // Act
    mocks.ReplayAll();
    var result = accountService.WithdrawMoney(1); // this line is different

    //Assert
    Assert.AreEqual(balance - 1, result);
}

我的服务的一部分:

public class AccountService : BaseService, IAccountService
{
    public AccountService(IUnitOfWork unitOfWork)
        : base(unitOfWork)
    {
    }

    public double WithdrawMoney(double amountOfMoney)
    {
        var currentBalance = GetCurrentBalance();

        if (currentBalance < amountOfMoney)
        {
            throw new BusinessLayerException("error!");
        }

        var lastAccount = GetLastAccount();

        if (lastAccount == null)
        {
            throw new BusinessLayerException("error!");
        }

        lastAccount.Balance -= amountOfMoney;

        unitOfWork.AccountRepository.Update(lastAccount);
        unitOfWork.Save();

        return lastAccount.Balance;
    }

    public double GetCurrentBalance()
    {
        var lastAccount = GetLastAccount();

        if (lastAccount == null)
        {
            return 0;
        }

        return lastAccount.Balance;
    }

    private Account GetLastAccount()
    {
        var lastAccount = unitOfWork.AccountRepository.Get().FirstOrDefault();

        return lastAccount;
    }
}

我得到以下调用堆栈:

Rhino.Mocks.Exceptions.ExpectationViolationException : IUnitOfWork.get_AccountRepository(); Expected #1, Actual #2.
   at Rhino.Mocks.MethodRecorders.UnorderedMethodRecorder.DoGetRecordedExpectation(IInvocation invocation, Object proxy, MethodInfo method, Object[] args)
   at Rhino.Mocks.MethodRecorders.MethodRecorderBase.GetRecordedExpectation(IInvocation invocation, Object proxy, MethodInfo method, Object[] args)
   at Rhino.Mocks.Impl.ReplayMockState.DoMethodCall(IInvocation invocation, MethodInfo method, Object[] args)
   at Rhino.Mocks.Impl.ReplayMockState.MethodCall(IInvocation invocation, MethodInfo method, Object[] args)
   at Rhino.Mocks.MockRepository.MethodCall(IInvocation invocation, Object proxy, MethodInfo method, Object[] args)
   at Rhino.Mocks.Impl.Invocation.Actions.RegularInvocation.PerformAgainst(IInvocation invocation)
   at Rhino.Mocks.Impl.RhinoInterceptor.Intercept(IInvocation invocation)
   at Castle.DynamicProxy.AbstractInvocation.Proceed()
   at Castle.Proxies.IUnitOfWorkProxy2936ffa6dea844258ad88f7a7e99dbc0.IUnitOfWork.get_AccountRepository()
   at Service.AccountService.GetLastAccount() in AccountService.cs: line 90
   at Service.AccountService.WithdrawMoney(Double amountOfMoney) in AccountService.cs: line 61
   at ServiceTest.AccountServiceTest.WithdrawMoney_Balance_should_decrease_when_money_been_withdrawn() in AccountServiceTest.cs: line 48

最佳答案

遵循以下规则进行 Rhione 模拟测试

要使用 Rhino Mocks，只需按照 Mock Object 下的步骤操作:

1.创建模拟:mockrepository.CreateMock();

2.记录您的解释:在记录块中。

3.调用ReplayAll告诉rhino Mocks你已经录制完成

4.最重要的。步骤:在这里调用预期的方法，例如:mockMyRhinoImplementation.HelloRhinoMocks(“ABC”)

注意:必须传递与您记录的相同的参数，否则它会再次抛出 ExpectationViolationException。

5.调用VerifyAll()；

因此，两个测试之间的不同之处在于一种方法有参数，而另一种方法没有......尝试使用如下

double number = 1;
var result = accountService.WithdrawMoney(number);

关于c# - Rhino.Mocks.Exceptions.ExpectationViolationException : Expected #1, 实际 #2，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/22504165/