======================================================================
FAIL: get_posts_test (whitelabel.tests.sources_tests.TestMostPopularSource)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/mnt/local/home/lukasz/rebelmouse/whitelabel/tests/sources_tests.py", line 22, in get_posts_test
    mock.assert_called_with(self.site.id, 24, 'hour', 20, [])
  File "/mnt/local/home/lukasz/envs/rebelmouse/local/lib/python2.7/site-packages/mock.py", line 835, in assert_called_with
    raise AssertionError(msg)
AssertionError: Expected call: _PostStats__get_most_popular_posts_mysql(6L, 24, 'hour', 20, [])
Actual call: _PostStats__get_most_popular_posts_mysql(6, None, 24, 'hour', 20, [])