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Diffstat (limited to 'Lib/test/test_io.py')
| -rw-r--r-- | Lib/test/test_io.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index ad22dfe..501e931 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -3906,6 +3906,17 @@ class MiscIOTest(unittest.TestCase): self.open(support.TESTFN, mode) self.assertIn('invalid mode', str(cm.exception)) + def test_open_pipe_with_append(self): + # bpo-27805: Ignore ESPIPE from lseek() in open(). + r, w = os.pipe() + self.addCleanup(os.close, r) + f = self.open(w, 'a') + self.addCleanup(f.close) + # Check that the file is marked non-seekable. On Windows, however, lseek + # somehow succeeds on pipes. + if sys.platform != 'win32': + self.assertFalse(f.seekable()) + def test_io_after_close(self): for kwargs in [ {"mode": "w"}, |