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TotT: Testing Against Interfaces

Friday, July 25, 2008
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Labels: Java , TotT

7 comments :

  1. UnknownJuly 25, 2008 at 5:37:00 PM PDT

    I really like this blog. You're doing great job. Keep going.

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  2. UrKJuly 27, 2008 at 11:33:00 PM PDT

    Wow!
    I went to upgrade my system to use one more laser: cyan

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  3. AnonymousJuly 27, 2008 at 11:46:00 PM PDT

    My missile defence system wasn't interface testable and now its all gone to hell! Curse you Google Test Blog!

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  4. UnknownJuly 29, 2008 at 6:59:00 PM PDT

    Great tip its worked really well for us, originally read about it in Expert One-on-One J2EE Design and Development by Rod Johnson...this book has a great section on unit tests.

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  5. Hamlet D'ArcyAugust 1, 2008 at 7:22:00 AM PDT

    This is a cute post, but I respectfully disagree on the usefulness of abstract TestCase classes with test methods in the base class. My project went down this route recently. The problem we experienced was with finding failures. Our tools (IDE) would report a failing test, but it was often a failure in the base class test method and not the subclass test method that we were working on. So we'd experience test failures and not know which class was failing... the base class or the subclass? Without the failure being a "smoking gun" as to the problem, we quickly scaled back on this approach in favor of a composition based strategy.

    In summary: if you do this then I recommend NOT putting any more test methods in the subclass and instead defining a new test case for any subclass-specific tests. Otherwise failing tests will be a frustrating exercise in debugging.

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  6. rnaufalAugust 8, 2008 at 9:24:00 AM PDT

    Really nice! This way the abstract test case acts as a Template Method and createDeathRay() creates the specific implementation of the interface on every subclass. Other classes which adhere to this contract can be added and tested easily! Keep going!

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  7. UnknownMay 26, 2015 at 9:56:00 AM PDT

    Sorry to raise the question/challenge, but with the existence of parametrized testing strategy(@Parameter annotation), is this abstract template test base really necessary since BlueLaserPlanetaryDeathRayTest and Green LaserPlanetaryDeathRayTest are in parallel relationship?

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