'Test the ability to retrieve contributor statistics for a repo.'

def test_contributor_statistics(self):

    cassette_name = self.cassette_name('contributor_statistics')
    with self.recorder.use_cassette(cassette_name):
        repository = self.gh.repository('sigmavirus24', 'github3.py')
        assert (repository is not None)
        for stat in repository.contributor_statistics():
            assert isinstance(stat, github3.repos.stats.ContributorStats)
