still one unicode related unit-test error for MariaDB

[Christian Boos]

I just ran the whole test suite on 0.12-stable for my MariaDB 5.3.3 backend, and got the following:

ERROR: test_props_format_wrap_bothsides_unicode (trac.ticket.tests.notification.NotificationTestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "c:\Trac\repos\0.12-stable\trac\ticket\tests\notification.py", line 942, in test_props_format_wrap_bothsides_unicode
    ticket.insert()
  File "c:\Trac\repos\0.12-stable\trac\ticket\model.py", line 226, in insert
    @self.env.with_transaction(db)
  File "c:\Trac\repos\0.12-stable\trac\db\api.py", line 77, in transaction_wrapper
    fn(ldb)
  File "c:\Trac\repos\0.12-stable\trac\ticket\model.py", line 232, in do_insert
    [values[name] for name in std_fields])
  File "c:\Trac\repos\0.12-stable\trac\db\util.py", line 65, in execute
    return self.cursor.execute(sql_escape_percent(sql), args)
  File "c:\Dev\Python272\lib\site-packages\MySQLdb\cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "c:\Dev\Python272\lib\site-packages\MySQLdb\connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
OperationalError: (1366, "Incorrect string value: '\\xF0\\xA0\\x80\\x8B\\xE9\\x85...' for column 'component' at row 1")

Looks like we discussed that in #10548 already, but there was still something left to be done (cf. jomae)

… \xF0\xA0\x80\x8B (U+2000B) is valid UTF-8 bytes sequence. The same bytes exist in trac.util.tests.text.WrapTestCase.test_wrap_ambiwidth_double, the test confirms working on both UCS2/UCS4 builds of Python. But mysql 5.0 and 5.1 don't support 4-byte utf-8.

I'll replace the bytes with 3-byte utf-8 (UCS2) in test_props_format_wrap_bothsides_unicode, later.

[Jun Omae]

I'm sorry. I've forgotten….

Replaced in [11368-11370].