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authorZackery Spytz <zspytz@gmail.com>2018-06-29 20:07:13 (GMT)
committerSerhiy Storchaka <storchaka@gmail.com>2018-06-29 20:07:13 (GMT)
commit0464de0f9a226cfa32b803e0326c12b2432aba26 (patch)
treed4c456790417ad6aeed6f5fd732546d3d3dbc001 /Lib/test/test_io.py
parent11ba050986b96701f72f1356d22adde8c7dbf211 (diff)
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[2.7] bpo-25862: Fix assertion failures in io.TextIOWrapper.tell(). (GH-3918). (GH-8013)
(cherry picked from commit 23db935bcf258657682e66464bf8512def8af830) Co-authored-by: Zackery Spytz <zspytz@gmail.com>
Diffstat (limited to 'Lib/test/test_io.py')
-rw-r--r--Lib/test/test_io.py11
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index a725711..ebaf796 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -2741,6 +2741,17 @@ class TextIOWrapperTest(unittest.TestCase):
with self.maybeRaises(TypeError):
t.read(42)
+ 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 CTextIOWrapperTest(TextIOWrapperTest):