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gh-62432: unittest runner: Exit code 5 if no tests were run (#102051)

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As discussed in https://discuss.python.org/t/unittest-fail-if-zero-tests-were-discovered/21498/7

It is common for test runner misconfiguration to fail to find any tests,
This should be an error.

Fixes: #62432
This commit is contained in:
Stefano Rivera 2023-04-26 18:28:46 -07:00 • committed by GitHub
parent dc3f97549a
commit 76632b836c
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8 changed files with 64 additions and 22 deletions
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9
Lib/unittest/main.py
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@ -9,6 +9,7 @@ from . import loader, runner
from .signals import installHandler
__unittest = True
_NO_TESTS_EXITCODE = 5
MAIN_EXAMPLES = """\
Examples:
@ -279,6 +280,12 @@ class TestProgram(object):
testRunner = self.testRunner
self.result = testRunner.run(self.test)
if self.exit:
sys.exit(not self.result.wasSuccessful())
if self.result.testsRun == 0:
sys.exit(_NO_TESTS_EXITCODE)
elif self.result.wasSuccessful():
sys.exit(0)
else:
sys.exit(1)
main = TestProgram