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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 c731302a9f2..6a9ce39f08e 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -531,6 +531,17 @@ class IOTest(unittest.TestCase): self.assertRaises(OSError, obj.truncate) self.assertRaises(OSError, obj.truncate, 0) + def test_open_binmode_encoding(self): + """open() raises ValueError when encoding is specified in bin mode""" + self.assertRaises(ValueError, self.open, os_helper.TESTFN, + "wb", encoding="utf-8") + + # encoding=None and encoding="locale" is allowed. + with self.open(os_helper.TESTFN, "wb", encoding=None): + pass + with self.open(os_helper.TESTFN, "wb", encoding="locale"): + pass + def test_open_handles_NUL_chars(self): fn_with_NUL = 'foo\0bar' self.assertRaises(ValueError, self.open, fn_with_NUL, 'w') |