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Re: How to parameterize unittests

From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Subject Re: How to parameterize unittests
Date 2016-04-16 03:51 +1000
Message-ID <mailman.31.1460742680.6324.python-list@python.org> (permalink)
References (8 earlier) <5710D3DA.6030005@rece.vub.ac.be> <5710E30B.6050304@rece.vub.ac.be> <mailman.22.1460724628.6324.python-list@python.org> <57111b0b$0$1606$c3e8da3$5496439d@news.astraweb.com> <CAPTjJmonQX0s+cbFsDKr=osHQNp8GKJaCrVfuGfTjzXYsjJqZQ@mail.gmail.com>

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On Sat, Apr 16, 2016 at 2:47 AM, Steven D'Aprano <steve@pearwood.info> wrote:
> If the tests for your AVL tree and it's subclasses are *identical*, then
> what's the point of the subclasses?

If the tree classes all have the same API but different performance
trade-offs, it would make sense to use all the same tests to make sure
their behaviours are correct. But if your module's purpose is to offer
a variety of tree classes, its tests should be designed around
parameterization. Refactoring the code would be the correct behaviour.

ChrisA

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Thread

How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-14 16:08 +0200
  Re: How to parameterize unittests Steven D'Aprano <steve@pearwood.info> - 2016-04-15 01:05 +1000
    Re: How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-15 08:52 +0200
    Re: How to parameterize unittests Chris Angelico <rosuav@gmail.com> - 2016-04-15 17:42 +1000
    Re: How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-15 10:20 +0200
      Re: How to parameterize unittests Steven D'Aprano <steve@pearwood.info> - 2016-04-15 19:10 +1000
        Re: How to parameterize unittests Michael Selik <michael.selik@gmail.com> - 2016-04-15 10:05 +0000
        Re: How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-15 13:43 +0200
        Re: How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-15 14:48 +0200
          Re: How to parameterize unittests Steven D'Aprano <steve@pearwood.info> - 2016-04-16 02:47 +1000
            Re: How to parameterize unittests Chris Angelico <rosuav@gmail.com> - 2016-04-16 03:51 +1000
            Re: How to parameterize unittests Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2016-04-16 22:37 +0200
    Re: How to parameterize unittests Serhiy Storchaka <storchaka@gmail.com> - 2016-04-15 11:24 +0300
    Re: How to parameterize unittests Chris Angelico <rosuav@gmail.com> - 2016-04-15 18:28 +1000
    Re: How to parameterize unittests Serhiy Storchaka <storchaka@gmail.com> - 2016-04-15 11:31 +0300
    Re: How to parameterize unittests Ben Finney <ben+python@benfinney.id.au> - 2016-04-15 18:35 +1000

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