Today, I had a real TDD session while I was coding a piece for upcoming release.
I did a classical TDD (I think):
1. Wrote failing test first.
2. Coded a bit. Made the test pass.
3. Wrote another test(s).
4. Coded some more. Made the test(s) pass.
5. Left the day with a failing test.
I think, it was Kent Beck, who in his book, Test Driven Development - By Example, has mentioned that it is a good practice to leave the day with a failing test. The failing test is a good way to remember "what were you upto yesterday" when you start the day next morning.
I used Agitar JUnit runner, and it showed me code coverage done by my tests. This helped me to not only write more tests to have 100% code coverage, but also made me remove some redundant conditional checks as the those checks were evaluating to "true" always.


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