Make the GUI layer thin
Make the GUI layer thin
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GUIs, CGI programs, etc... are hard to test.
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Make the problem as small as possible.
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Separate the form from the functionality.
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Put as much code into format agnostic libraries as possible
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Large, stand-alone programs (especially CGIs) ring alarm bells.
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You might wind up with a small amount that still needs to be
tested by hand.
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At least you don't have to test the whole thing by hand.
