'Test the ability to retrieve a diff for a comparison.'

def test_diff(self):

    cassette_name = self.cassette_name('diff')
    with self.recorder.use_cassette(cassette_name):
        repository = self.gh.repository('sigmavirus24', 'github3.py')
        comparison = repository.compare_commits(base='master', head='develop')
        diff = comparison.diff()
    assert diff
