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我想模拟一个dbWriteService方法,当我调用它时返回一个聚合异常,即使一切都不为空。我对嘲笑和犀牛模拟器很陌生,所以我没有真正解决这个问题。犀牛模拟调用异步任务方法
这是我想在功能嘲笑的部分,我想测试:
public async Task<bool> SaveDataAsync(object data) {
...
await _dbWriteService.UpdateAsync(data);
...
}
我嘲讽writeService这样的:
dbWriteService = MockRepository.GenerateStub<IDbWriteService>();
dbWriteService.Expect(service => service.UpdateAsync(null));
var wasSaved = subject.SaveDataAsync(data).Result;
dbWriteService.AssertWasCalled(service => service.UpdateAsync(null));
和我收到这样一个异常:
System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Object reference not set to an instance of an object.
at ClearingDataRepository.<SaveDataAsync>d__28.MoveNext() in ....\ClearingDataRepository.cs:line 170
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at System.Threading.Tasks.Task`1.get_Result()
at UnitTests.Services.ClearingDataRepositoryTests.SaveDataAsync_Sucess() in ....\ClearingDataRepositoryTests.cs:line 90
我尝试了一些与模拟功能的东西,但我没有得到原因wh这东西不起作用。有人可以向我解释这一点吗?