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| author | Zackery Spytz <zspytz@gmail.com> | 2018-06-29 04:14:58 -0600 |
|---|---|---|
| committer | Serhiy Storchaka <storchaka@gmail.com> | 2018-06-29 13:14:58 +0300 |
| commit | 23db935bcf258657682e66464bf8512def8af830 (patch) | |
| tree | 1ee4e96c8aba659a705a51e307de77a0f97e00fc /Lib/test/test_io.py | |
| parent | bda9c3eae3ad16e43145599ac6359bfdcaf1fd4a (diff) | |
| download | cpython-git-23db935bcf258657682e66464bf8512def8af830.tar.gz | |
bpo-25862: Fix assertion failures in io.TextIOWrapper.tell(). (GH-3918)
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 286ae760e1..a03a7f7810 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -3549,6 +3549,17 @@ class TextIOWrapperTest(unittest.TestCase): expected = 'linesep' + os.linesep + 'LF\nLF\nCR\rCRLF\r\n' self.assertEqual(txt.detach().getvalue().decode('ascii'), expected) + def test_issue25862(self): + # Assertion failures occurred in tell() after read() and write(). + t = self.TextIOWrapper(self.BytesIO(b'test'), encoding='ascii') + t.read(1) + t.read() + t.tell() + t = self.TextIOWrapper(self.BytesIO(b'test'), encoding='ascii') + t.read(1) + t.write('x') + t.tell() + class MemviewBytesIO(io.BytesIO): '''A BytesIO object whose read method returns memoryviews |