def test_mixed_unicode_str(self):
# from Python 2.7 test suite
def test(expected, fmt, *args, **kwargs):
self.assertEqual(f(fmt).format(*args, **kwargs), expected)
# test mixing unicode and str
self.assertEqual(_strformat(u'abc', 's'), u'abc')
self.assertEqual(_strformat(u'abc', '->10s'), u'-------abc')
# test combining string and unicode
test(u'foobar', u"foo{0}", 'bar')
# This will try to convert the argument from unicode to str, which
# will succeed
test('foobar', "foo{0}", u'bar')
# This will try to convert the argument from unicode to str, which
# will fail
self.assertRaises(UnicodeEncodeError, f("foo{0}").format, u'\u1000bar')
def _format_field(value, parts, conv, spec, want_bytes=False):
for k, part, _ in parts:
if k:
if part.isdigit():
value = value[int(part)]
else:
value = value[part]
else:
value = getattr(value, part)
if conv:
value = ((conv == 'r') and '%r' or '%s') % (value,)
format_value = getattr(value, '__format__', None)
if format_value and (hasattr(value, 'strftime') or
not isinstance(format_value, builtin_function_or_method)):
value = format_value(spec)
else:
# Skip the __format__ method for builtin types
value = _strformat(value, spec)
if want_bytes and isinstance(value, unicode):
return str(value)
return value
def _check_strformat(self, expected, fmt, value):
value, expected = self._prepare(value, expected)
# test both with and without the trailing 's'
self.assertEqual(_strformat(value, fmt), expected)
self.assertEqual(_strformat(value, fmt + 's'), expected)