how to avoid returning mocks from a mocked object list

Posted by koen on Stack Overflow See other posts from Stack Overflow or by koen
Published on 2010-04-20T19:51:41Z Indexed on 2010/04/20 23:33 UTC
Read the original article Hit count: 310

Filed under:

TDD

|

mocking

|

design

|

mock-driven-design

I'm trying out mock/responsibility driven design. I seem to have problems to avoid returning mocks from mocks in the case of finder objects.

An example could be an object that checks whether the bills from last month are paid. It needs a service that retrieves a list of bills for that. So I need to mock that service that retrieves the bills. At the same time I need that mock to return mocked Bills (since I don't want my test to rely on the correctness bill implementation).

Is my design flawed? Is there a better way to test this? Or is this the way it will need to be when using finder objects (the finding of the bills in this case)?

© Stack Overflow or respective owner

Related posts about TDD

TDD - How to start really thinking TDD?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have been reading about Agile, XP methodologies and TDDs. I have been in projects which states it needs to do TDD, but most of the tests are somehow integration tests or during the course of project TDD is forgotten in effort to finish codes faster. So, as far as my case goes, I have written unit… >>> More
Are "TDD Tests" different to Unit Tests?

as seen on Programmers - Search for 'Programmers'
I read this article about TDD and unit testing: http://stephenwalther.com/blog/archive/2009/04/11/tdd-tests-are-not-unit-tests.aspx I think it was an excellent article. The author makes a distinction between what he calls "TDD Tests" and unit testing. They appear to be different tests to him. Previous… >>> More
Doing TDD Silverlight 4 RC using Visual Studio 2010 RC

as seen on Stack Overflow - Search for 'Stack Overflow'
First I am glad to see better TDD support in VS2010. Support for generating code stubs from my tests is ok - not as good as more mature TDD plug-ins but a good start. I am looking for some best Silverlight 4.0 TDD practices. First Question: Anyone have links, recommendations? I know the new Silverlight… >>> More
Applying Test Driven Development to a tightly coupled architecture

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi all, I've recently been studying TDD, attended a conference and have dabbled in few tests and already I'm 100% sold, I absolutely love it TDD. As a result I've raised this with my seniors and they are prepared to give it a chance, so they have tasked me with coming up with a way to implement… >>> More
Integrating JavaScript Unit Tests with Visual Studio

as seen on Stephen Walter - Search for 'Stephen Walter'
Modern ASP.NET web applications take full advantage of client-side JavaScript to provide better interactivity and responsiveness. If you are building an ASP.NET application in the right way, you quickly end up with lots and lots of JavaScript code. When writing server code, you should be writing… >>> More

Related posts about mocking

Mocking successive calls of similar type via sequential mocking

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
In this post , i show how you can benefit from sequential mocking feature[In JustMock] for setting up expectations with successive calls of same type. To start let’s first consider the following dummy database and entity class. public class Person { public virtual string Name… >>> More
Mocking successive calls of similar type via sequential mocking

as seen on Dot net Slackers - Search for 'Dot net Slackers'
In this post , i show how you can benefit from sequential mocking feature[In JustMock] for setting up expectations with successive calls of same type. To start lets first consider the following dummy database and entity class. public class Person { public virtual string Name { get;… >>> More
Auto Mocking using JustMock

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Auto mocking containers are designed to reduce the friction of keeping unit test beds in sync with the code being tested as systems are updated and evolve over time. This is one sentence how you define auto mocking. Of course this is a more or less formal. In a more informal way auto mocking containers… >>> More
not using partial mocking? do they also mean in web-app?

as seen on Stack Overflow - Search for 'Stack Overflow'
Im learning Mockito and in chapter 16 they say you should not use partial mocking in new system. I disagree, for example in one of my actions i use partial mocking for static framework methods, sql calls, etc. I extracted the stuff into methods and then mock it in tests. Most of those methods are… >>> More
Talks Submitted for Ann Arbor Day of .NET 2010

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Just submitted my session abstracts for Ann Arbor's Day of .NET 2010. Getting up to speed with .NET 3.5 -- Just in time for 4.0! Yes, C# 4.0 is just around the corner. But if you haven't had the chance to use C# 3.5 extensively, this session will start from the ground up with the new… >>> More