Open source project developed using TDD and Java [closed]

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I'm looking for a project that:

1) Has avaiable sources including tests.

2) Was/is developed strictly using TDD.

3) Is written in Java and JUnit.

Any ideas?

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We wrote JBehave, the BDD scenario framework, using BDD at a unit level too. Very slightly different to TDD but provides many of the same values. (You'll find the tests at src/behaviour rather than src/test).

Ditto with Tyburn, a little Swing automation harness I wrote some time ago.

You might also look at Mockito.

I recommend these three because they've been written to support aspects of BDD itself, so the people who wrote them really, really care about this stuff.

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JUnit comes to mind.

According to Erich Gamma in this interview, it was developed "in strict test-driven way." I've also heard interviews with both Gamma and Beck that repeated this statement.

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Hibernate and Spring are good open source examples that are heavily unit-tested.

EDIT, any of the apache commons projects as well...

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"Good example of complex code using TDD" is a question on the Programmers SE site with answers that could be of interest to you.