Strange output with non-ascii string

Platform: Windows 10 64bit Python: 3.7 Shell: Powershell 6.1.1

Test code:

#test_green.py
from unittest import TestCase


class OutputTests(TestCase):
    def test_success(self):
        self.assertEqual("lang: 日本語", "lang: 日本語")

    def test_fail(self):
        self.assertEqual("lang: 日本語", "lang: English")

Output by Green:

test_green OutputTests F test_fail . test_success

Failure in test_green.OutputTests.test_fail // Traceback here AssertionError: 'lang: Ri Ben Yu ’ != ‘lang: English’ - lang: Ri Ben Yu + lang: English

Ran 2 tests in 0.740s

FAILED (failures=1, passes=1)

Output by builtin unittest:

F.

====================================================================== FAIL: test_fail (test_green.OutputTests) ---------------------------------------------------------------------- //Traceback here AssertionError: ‘lang: 日本語’ != ‘lang: English’ - lang: 日本語 + lang: English

---------------------------------------------------------------------- Ran 2 tests in 0.002s

FAILED (failures=1)

Test finished as expected, but that is wrong output(日本語->Ri Ben Yu ).

[CleanCut]

Fix is in 2.14.0, just released.

[tkamenoko]

Yes, I think so. Current behavior is not documented and may lead to confusion. The same output as builtin unittest is required.