Getting Python's unittest results in a tearDown() method (my SO answer, question 4414234)

results_in_teardown.py

"""Getting Python's unittest results in a tearDown() method
https://stackoverflow.com/questions/4414234/getting-pythons-unittest-results-in-a-teardown-method#39606065
"""
import unittest


class MyTest(unittest.TestCase):
    def tearDown(self):
        if hasattr(self._outcome, 'errors'):
            # Python 3.4 - 3.10  (These two methods have no side effects)
            result = self.defaultTestResult()
            self._feedErrorsToResult(result, self._outcome.errors)
        else:
            # Python 3.11+
            result = self._outcome.result
        ok = all(test != self for test, text in result.errors + result.failures)

        # Demo output:  (print short info immediately - not important)
        if ok:
            print('\nOK: %s' % (self.id(),))
        for typ, errors in (('ERROR', result.errors), ('FAIL', result.failures)):
            for test, text in errors:
                if test is self:
                    # the full traceback is in the variable `text`
                    msg = [x for x in text.split('\n')[1:]
                           if not x.startswith(' ')][0]
                    print("\n\n%s: %s\n     %s" % (typ, self.id(), msg))
                    
    def list2reason(self, exc_list):
        if exc_list and exc_list[-1][0] is self:
            return exc_list[-1][1]

    # demo tests
    def test_success(self):
        self.assertEqual(1, 1)

    def test_fail(self):
        self.assertEqual(2, 1)

    def test_error(self):
        self.assertEqual(1 / 0, 1)

    @unittest.expectedFailure
    def test_expected_fail(self):
        self.assertEqual(2, 1)

    @unittest.expectedFailure
    def test_expected_error(self):
        self.assertEqual(1 / 0, 1)

    @unittest.expectedFailure
    def test_unexpected_success(self):
        self.assertEqual(1, 1)

Note that the Python 3.11 approach doesn't work if the tests are run with pytest and the pytest developers have no no intention of making it work, since the _Outcome is a private attribute. The 3.4 to 3.10 code works fine when pytest is used to run unittest based tests.

Note that the Python 3.11 approach doesn't work if the tests are run with pytest and the pytest developers have no no intention of making it work, since the _Outcome is a private attribute. The 3.4 to 3.10 code works fine when pytest is used to run unittest based tests.

Why do you need this trickery when using pytest as a runner ? pytest offer much better alternatives to this hack

Why do you need this trickery when using pytest as a runner ? pytest offer much better alternatives to this hack

We don't need it, but with Python 3.4-3.10 the original hack works the same both with and without using pytest.

In this way, the results of pass, fail, and error can be obtained, but it is impossible to know whether the use case is skipped. is there any way to know

Are you sure this works because I am getting self._outcome.result.error - result does not have error attr or failure attr

You can see the comments that one branch is used by Python <= 3.10 and the other by Python >= 3.11.
The used branch works and the other is invalid. You probably evaluate it only in Python <= 3.10 but you should also try it in Python >= 3.11 to can verify the code.

I checked again, and the attribute "error" cannot be found occurs only when using pytest (7.4.4 is my pytest version, also checked for pytest 8.2), your code works with python - m unittest test.py . Any way to fix this for pytest?

It works also with pytest 7.4.4 or 8.2.2 (your versions) if Python is <= 3.10.x

The package "pytest " is so different from "unittest" that I don't have the energy to start reverse engineering to fix it for fun for Python >= 3.11.

Thanks! Work perfectly for me 😄
Python 3.11.9