def METHOD_NAME(self):
    twitter_data = TwitterAPIData()
    twitter_data.update_id_mapping(
        {
            "id": 42,
            "screen_name": "FooBarBazQuux",
            "profile_image_url_https": "https://example.com/foo.jpg",
        }
    )
    self.assertEqual(
        twitter_data.screen_name_to_user_id, {"foobarbazquux": "42"}
    )
    self.assertEqual(
        twitter_data.user_id_to_screen_name, {"42": "FooBarBazQuux"}
    )
    self.assertEqual(
        twitter_data.user_id_to_photo_url,
        {"42": "https://example.com/foo.jpg"},
    )