tests: fix tests on Python 3.4
tests: fix tests on Python 3.4

Python 3.4's object.__new__() takes a single parameter only.

Signed-off-by: David Aguilar <9de348c050f7cd1ca590883733c4e531ce610bf4@gmail.com>

mandx/jsonpickle,dongguangming/jsonpickle,mandx/jsonpickle,dongguangming/jsonpickle,dongguangming/jsonpickle,mandx/jsonpickle,mandx/jsonpickle,dongguangming/jsonpickle