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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 2d0ca87..67be108 100644 --- a/Lib/test/test_io.py +++ b/Lib/test/test_io.py @@ -4289,6 +4289,17 @@ class MiscIOTest(unittest.TestCase): self.assertTrue( warnings[1].startswith(b"<string>:8: EncodingWarning: ")) + def test_text_encoding(self): + # PEP 597, bpo-47000. io.text_encoding() returns "locale" or "utf-8" + # based on sys.flags.utf8_mode + code = "import io; print(io.text_encoding(None))" + + proc = assert_python_ok('-X', 'utf8=0', '-c', code) + self.assertEqual(b"locale", proc.out.strip()) + + proc = assert_python_ok('-X', 'utf8=1', '-c', code) + self.assertEqual(b"utf-8", proc.out.strip()) + @support.cpython_only # Depending if OpenWrapper was already created or not, the warning is # emitted or not. For example, the attribute is already created when this |