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Re: case against XP (was: PG: Hackers and Painters)

> This is what test-driven development looks like from the outside -- as
> if people wrote unit tests against their complete
> understanding of the application and hence, potentially left things
> uncovered.  Test-driven development doesn't allow
> a feature to be added to the application code unless it is put in to
> make a test work.  There is effectively _no_ code
> that doesn't correspond to some unit test or other, so it's not easy to
> find holes in the test suite.  I know from
> personal experience that refactoring is vastly easier and more reliable
> when the code has been developed using TDD.

Sure, but sometimes the test is a factor of magnitude or two more difficult
than writing the feature.  This is especially true of GUI features.