That sounds like a sensible idea. You could add a --self-test command line switch, and have it on by default during development, and off when the code is complete. You could even put the test code into a separate .pm file (in the same package) so that you don't have to ship the test code in your deliverable.

An alternative approach would be to create a .t test script that loads and executes your main program, either using system() with a test command line, and then examines the output, or by loading the whole script into a scalar string, and using eval()

Overall though I think it is wiser in the long term to take moritz's advice and make your script act as both standalone and as a module with doit(@ARGV) unless caller; at the end of all your subroutine definitions


In reply to Re: TDD of non-module code by chrestomanci
in thread TDD of non-module code by davies

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