Dave Herman's research blog.
"The pain of testing for bottom-up development is producing test data without a front-end. The pain of testing for top-down development is that you can't."
What does this epigram even mean? If I bottom up something I just need the test data for the lower parts, if I top down it I need just smaller and simpler test cases in the beginning.I can bottom up a compiler by start testing scanning/lexing/parsing or type checking or optimizations without having to use an actual source program as test data. If I want to top down it I just need to start testing with very simple programs (e.g. Hello World, the empty program).
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