Mercurial > cpython-lru_cache-weakref
diff Lib/test/test_io.py @ 49783:eade47dfc1e4 legacy-trunk
Fixed issue #4233.
Changed semantic of _fileio.FileIO's close() method on file objects with closefd=False.
The file descriptor is still kept open but the file object behaves like a closed file.
The FileIO object also got a new readonly attribute closefd.
Approved by Barry
Backport of r67106 from the py3k branch
| author | Amaury Forgeot d'Arc <amauryfa@gmail.com> |
|---|---|
| date | Thu, 20 Nov 2008 23:34:31 +0000 |
| parents | f41cb206d061 |
| children | dc4acf753296 |
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--- a/Lib/test/test_io.py Thu Nov 20 22:06:22 2008 +0000 +++ b/Lib/test/test_io.py Thu Nov 20 23:34:31 2008 +0000 @@ -272,6 +272,30 @@ self.assertRaises(ValueError, io.open, test_support.TESTFN, 'w', closefd=False) + def testReadClosed(self): + with io.open(test_support.TESTFN, "w") as f: + f.write("egg\n") + with io.open(test_support.TESTFN, "r") as f: + file = io.open(f.fileno(), "r", closefd=False) + self.assertEqual(file.read(), "egg\n") + file.seek(0) + file.close() + self.assertRaises(ValueError, file.read) + + def test_no_closefd_with_filename(self): + # can't use closefd in combination with a file name + self.assertRaises(ValueError, + io.open, test_support.TESTFN, "r", closefd=False) + + def test_closefd_attr(self): + with io.open(test_support.TESTFN, "wb") as f: + f.write(b"egg\n") + with io.open(test_support.TESTFN, "r") as f: + self.assertEqual(f.buffer.raw.closefd, True) + file = io.open(f.fileno(), "r", closefd=False) + self.assertEqual(file.buffer.raw.closefd, False) + + class MemorySeekTestMixin: def testInit(self):