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Diffstat (limited to 'Lib/test/test_tempfile.py')
| -rw-r--r-- | Lib/test/test_tempfile.py | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py index 52b13b98cbc..36151b016ea 100644 --- a/Lib/test/test_tempfile.py +++ b/Lib/test/test_tempfile.py @@ -1594,6 +1594,29 @@ if tempfile.NamedTemporaryFile is not tempfile.TemporaryFile: mock_close.assert_called() self.assertEqual(os.listdir(dir), []) + @unittest.skipUnless(tempfile._O_TMPFILE_WORKS, 'need os.O_TMPFILE') + @unittest.skipUnless(os.path.exists('/proc/self/fd'), + 'need /proc/self/fd') + def test_link_tmpfile(self): + dir = tempfile.mkdtemp() + self.addCleanup(os_helper.rmtree, dir) + filename = os.path.join(dir, "link") + + with tempfile.TemporaryFile('w', dir=dir) as tmp: + # the flag can become False on Linux <= 3.11 + if not tempfile._O_TMPFILE_WORKS: + self.skipTest("O_TMPFILE doesn't work") + + tmp.write("hello") + tmp.flush() + fd = tmp.fileno() + + os.link(f'/proc/self/fd/{fd}', + filename, + follow_symlinks=True) + with open(filename) as fp: + self.assertEqual(fp.read(), "hello") + # Helper for test_del_on_shutdown class NulledModules: |