'Test that progress_url is in the successful response.'

def test_get_student_progress_url(self):

    url = reverse('get_student_progress_url', kwargs={'course_id': self.course.id.to_deprecated_string()})
    data = {'unique_student_identifier': self.students[0].email.encode('utf-8')}
    response = self.client.post(url, data)
    self.assertEqual(response.status_code, 200)
    res_json = json.loads(response.content)
    self.assertIn('progress_url', res_json)
