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Issue #13444: When stdout has been closed explicitly, we should not attempt to flush it at shutdown and print an error.

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This also adds a test for issue #5319, whose resolution introduced the issue.
This commit is contained in:
Antoine Pitrou 2011-11-26 22:02:29 +01:00
commit 5604ef3e36
3 changed files with 40 additions and 2 deletions
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19
Lib/test/test_cmd_line.py
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@ -266,6 +266,25 @@ class CmdLineTest(unittest.TestCase):
self.assertRegex(err.decode('ascii', 'ignore'), 'SyntaxError')
self.assertEqual(b'', out)
def test_stdout_flush_at_shutdown(self):
# Issue #5319: if stdout.flush() fails at shutdown, an error should
# be printed out.
code = """if 1:
import os, sys
sys.stdout.write('x')
os.close(sys.stdout.fileno())"""
rc, out, err = assert_python_ok('-c', code)
self.assertEqual(b'', out)
self.assertRegex(err.decode('ascii', 'ignore'),
'Exception OSError: .* ignored')
def test_closed_stdout(self):
# Issue #13444: if stdout has been explicitly closed, we should
# not attempt to flush it at shutdown.
code = "import sys; sys.stdout.close()"
rc, out, err = assert_python_ok('-c', code)
self.assertEqual(b'', err)
def test_main():
test.support.run_unittest(CmdLineTest)