ten small Python programs
Steven Bethard
steven.bethard at gmail.com
Sun May 27 14:39:27 EDT 2007
Steve Howell wrote:
> --- Steven Bethard <steven.bethard at gmail.com> wrote:
>> I think I would rewrite the current unit-testing
>> example to use the
>> standard library unittest module::
>>
>> # Let's write reusable code, and unit test it.
>> def add_money(amounts):
>> # do arithmetic in pennies so as not to
>> accumulate float errors
>> pennies = sum([round(int(amount * 100)) for
>> amount in amounts])
>> return float(pennies / 100.0)
>> import unittest
>> class TestAddMoney(unittest.TestCase):
>> def test_float_errors(self):
>> self.failUnlessEqual(add_money([0.13,
>> 0.02]), 0.15)
>> self.failUnlessEqual(add_money([100.01,
>> 99.99]), 200)
>> self.failUnlessEqual(add_money([0,
>> -13.00, 13.00]), 0)
>> if __name__ == '__main__':
>> unittest.main()
>>
>
> Just a minor quibble, but wouldn't you want the import
> and test class to only get executed in the ___main__
> context?
That would be fine too. In the real world, I'd put the tests in a
different module.
STeVe
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