Coding: Test As You Go

If all the little pieces work, the big pieces will

If you don't like testing, best to do it in small doses

• Avoid the big, dull testing swamp at the end

Best tests come when the problem is fresh in your mind

You won't be tempted to skimp on testing at the end of the project

http://www.pobox.com/~schwern/talks/Test_Tutorial/