'Test that a user can retrieve a pull request from a repo.'

def test_pull_request(self):

    cassette_name = self.cassette_name('pull_request')
    with self.recorder.use_cassette(cassette_name):
        repository = self.gh.repository('sigmavirus24', 'github3.py')
        pull_request = repository.pull_request(546)
    assert isinstance(pull_request, github3.pulls.PullRequest)
