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| author | Oren Milman <orenmn@gmail.com> | 2017-08-25 18:14:54 (GMT) |
|---|---|---|
| committer | Serhiy Storchaka <storchaka@gmail.com> | 2017-08-25 18:14:54 (GMT) |
| commit | a5b4ea15b61e3f3985f4f0748a18f8b888a63532 (patch) | |
| tree | 1fe8d1d522298d73105b17b9129e2a7c52ea2e00 /Lib | |
| parent | dce6502059f46a04f90938b9d832394c8215397b (diff) | |
| download | cpython-a5b4ea15b61e3f3985f4f0748a18f8b888a63532.zip cpython-a5b4ea15b61e3f3985f4f0748a18f8b888a63532.tar.gz cpython-a5b4ea15b61e3f3985f4f0748a18f8b888a63532.tar.bz2 | |
bpo-31271: Fix an assertion failure in io.TextIOWrapper.write. (#3201)
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/test_io.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py index ab0cbe1..ba95c14 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -3225,6 +3225,14 @@ class TextIOWrapperTest(unittest.TestCase): t = self.TextIOWrapper(self.StringIO('a')) self.assertRaises(TypeError, t.read) + def test_illegal_encoder(self): + # Issue 31271: Calling write() while the return value of encoder's + # encode() is invalid shouldn't cause an assertion failure. + rot13 = codecs.lookup("rot13") + with support.swap_attr(rot13, '_is_text_encoding', True): + t = io.TextIOWrapper(io.BytesIO(b'foo'), encoding="rot13") + self.assertRaises(TypeError, t.write, 'bar') + def test_illegal_decoder(self): # Issue #17106 # Bypass the early encoding check added in issue 20404 |