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gh-119182: Decode PyUnicode_FromFormat() format string from UTF-8 #120248

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vstinner wants to merge 7 commits into from
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gh-119182: Decode PyUnicode_FromFormat() format string from UTF-8 #120248

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3d5bca4
gh-119182: Decode PyUnicode_FromFormat() format from UTF-8
vstinner Jun 7, 2024
6a87915
Update test_exceptions
vstinner Jun 7, 2024
e830944
Use strict error handler
vstinner Jun 11, 2024
242e6cb
Fix error handling
vstinner Jun 11, 2024
d04269f
Add tests on truncated UTF-8 format strings
vstinner Jun 11, 2024
94da5e7
Don't mention the strict error handler
vstinner Jun 11, 2024
89fd69a
Revert consumed parameter
vstinner Jun 11, 2024
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Add tests on truncated UTF-8 format strings
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@vstinner
vstinner committed Jun 11, 2024
commit d04269ff6ea5d129be59ef1668c93ec3fca88eae
8 changes: 7 additions & 1 deletion Lib/test/test_capi/test_unicode.py
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Expand Up @@ -380,7 +380,7 @@ def check_format(expected, format, *args):
text = PyUnicode_FromFormat(format, *args)
self.assertEqual(expected, text)

# ascii format, non-ascii argument
# ASCII format, non-ASCII %U argument
check_format('ascii\x7f=unicode\xe9',
b'ascii\x7f=%U', 'unicode\xe9')

Expand All @@ -392,6 +392,12 @@ def check_format(expected, format, *args):
PyUnicode_FromFormat(b'invalid format string\xff: %s', b'abc')
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self.assertIsInstance(cm.exception.__context__, UnicodeDecodeError)

# Truncated UTF-8 format strings
with self.assertRaisesRegex(ValueError, 'format string'):
PyUnicode_FromFormat(b'truncated utf8: \xc3')
with self.assertRaisesRegex(ValueError, 'format string'):
PyUnicode_FromFormat(b'truncated utf8: \xe2\x82')

# test "%c"
check_format('\uabcd',
b'%c', c_int(0xabcd))
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