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My Google search for "test driven design" got me Test-driven_development as a first hit. That is a short article that hits the high points and directly answers your objection - the tests fail until the code they test is written and is correct (at least in the eyes of the tests).

TDD is a technique I use occasionally, but in each case I've used it the result has been spectacular success. When I have used TDD I've also used code coverage to ensure a sensibly high proportion of the code is tested. In my experience the result was seeming slow progress, but substantially bug free and easy to maintain (i.e. high quality) code as a result.

Not all projects can use TDD. My day job is writing hardware specific embedded code for in house developed systems. Testing software embedded in hardware is challenging!

Optimising for fewest key strokes only makes sense transmitting to Pluto or beyond

In reply to Re^3: What to test in a new module by GrandFather
in thread What to test in a new module by Bod

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