Re: C++ fluency

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Wed, 13 May 2009 01:46:08 -0700 (PDT)
Message-ID:
<4c7abb56-d84f-4c6c-a040-16da70534567@z7g2000vbh.googlegroups.com>
On May 12, 6:21 pm, "Phlip" <phlip2...@gmail.com> wrote:

James Kanze wrote:

Each unit test checks only a single set of input. Most
functions have billions of possible input, if not more. How
exhaustive do you test? (The answer, of course, depends.
But given the non-linearity of computer logic, you often
need quite a few.)


Given a website with 50 different skins (CSS folders), I
tested all the skins like this:

   max = SLOW_TESTS ? 50 : 5

   skins.sort_by(&:rand)[0..max].each do |skins|
     test_this_one(skin)
   end

You integrate in FAST_TEST mode, and only test 5 random skins.
The test server runs in SLOW_TEST mode.


That sounds like a good idea. Not sure how to integrate it into
my makefiles, however---maybe two separate targets (localbuild
and export?). (Obviously, choosing all of the tests randomly
isn't always the best solution, but you can probably find a
reasonable subset somehow.)

Oh, and any skin-specific tests that you just changed in the
last 10 minutes run when you integrate, too.


That will be a bit trickier to add to the makefile:-).

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