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From: Lawrence =?iso-8859-13?q?D=FFOliveiro?= <ldo@nz.invalid>
Newsgroups: comp.lang.ada
Subject: Re: In precision typing we trust
Date: Thu, 28 Aug 2025 22:14:43 -0000 (UTC)
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On Thu, 28 Aug 2025 14:25:57 +0200, Björn Persson wrote:

> I once worked with a team of testers who wrote their testcases in
> Python. Each testcase was supposed to return True or False to report
> whether the test had succeeded or failed. Some testcases returned
> the string "true" or "false" instead.

Shouldn’t your test harness have had something like

    result_of_test = test_routine(*test_args, **test_kwargs)
    assert isinstance(result_of_test, bool), \
        "unexpected test result %s" % result_of_test
    if result_of_test :
        ... chalk up another success ..
    else :
        ... chalk up another failure ..
    #end if

It only takes one extra line of code to do that typecheck.