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Support unittest.subTest context manager (Python 3.4+)

See original GitHub issue


Python 3.4 added the unittest.subTest() context manager. It would be wonderful if Green elevated the information from subTest() up to the top level.

I think it’s best displayed with an example.


Code (taken directly from the subTest() docs):

class NumbersTest(unittest.TestCase):

    def test_even(self):
        Test that numbers between 0 and 5 are all even.
        for i in range(0, 6):
            with self.subTest(i=i):
                self.assertEqual(i % 2, 0)

Green’s output:


Unittest’s output:


See how the standard unittest module will show you (i=1), (i=3), and (i=5) on the fail line?


Here’s a mockup of how Green might look when utilizing the subTest feature:

green project -vvv


I don’t think that the subTest items need to be displayed for lower verbosity levels. I also don’t think that each failed iteration needs the Traceback (like is done with unittest) unless verbosity is set to the highest level.

Issue Analytics

  • State:closed
  • Created 8 years ago
  • Comments:12 (9 by maintainers)

github_iconTop GitHub Comments

lsh-0commented, Sep 29, 2017

thanks guys, works a treat

CleanCutcommented, Aug 11, 2017

Resolved in 2.11.0 (just released).

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