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gh-139759: Add test_unclosed_interpreter_on_fork #145545

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gh-139759: Add test_unclosed_interpreter_on_fork #145545

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19 changes: 19 additions & 0 deletions Lib/test/test_interpreters/test_stress.py
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
import os
import threading
import unittest

Expand Down Expand Up @@ -83,6 +84,24 @@ def test_create_interpreter_no_memory(self):
_testcapi.set_nomemory(0, 1)
_interpreters.create()

@support.requires_fork()
def test_unclosed_interpreter_on_fork(self):
interp = interpreters.create()
interp.exec("pass")

fds = os.pipe()
pid = os.fork()

if pid == 0:
os.close(fds[0])
os.write(fds[1], b"OK")
os._exit(0)
else:
os.close(fds[1])
self.addCleanup(os.close, fds[0])
value = os.read(fds[0], 100)
self.assertEqual(value, b"OK")


if __name__ == '__main__':
# Test needs to be a package, so we can do relative imports.
Expand Down
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