'Verify the view displays info for a given course.'

def test_retrieve(self):

    response = self.client.get(self.path, content_type=JSON_CONTENT_TYPE)
    self.assertEqual(response.status_code, 200)
    actual = json.loads(response.content)
    expected = self._serialize_course(self.course, [self.course_mode])
    self.assertEqual(actual, expected)
