test_csv.py 文件源码

def _test_default_attrs(self, ctor, *args):
        obj = ctor(*args)
        # Check defaults
        self.assertEqual(obj.dialect.delimiter, ',')
        self.assertEqual(obj.dialect.doublequote, True)
        self.assertEqual(obj.dialect.escapechar, None)
        self.assertEqual(obj.dialect.lineterminator, "\r\n")
        self.assertEqual(obj.dialect.quotechar, '"')
        self.assertEqual(obj.dialect.quoting, csv.QUOTE_MINIMAL)
        self.assertEqual(obj.dialect.skipinitialspace, False)
        self.assertEqual(obj.dialect.strict, False)
        # Try deleting or changing attributes (they are read-only)
        self.assertRaises(AttributeError, delattr, obj.dialect, 'delimiter')
        self.assertRaises(AttributeError, setattr, obj.dialect, 'delimiter', ':')
        self.assertRaises(AttributeError, delattr, obj.dialect, 'quoting')
        self.assertRaises(AttributeError, setattr, obj.dialect,
                          'quoting', None)