public IEnumerator UpdateValuesTest()
{
Scene testScene = SceneManager.GetActiveScene();
yield return(SceneManager.LoadSceneAsync("TestLevel", LoadSceneMode.Additive));
SceneManager.SetActiveScene(SceneManager.GetSceneByName("TestLevel"));
TextDisplayer textDisplayer = GameObject.Find("Score").GetComponent <TextDisplayer>();
textDisplayer.UpdateValues("Hello World!");
Assert.AreEqual("Hello World!", GameObject.Find("Score").GetComponent <Text>().text);
SceneManager.SetActiveScene(testScene);
yield return(SceneManager.UnloadSceneAsync("TestLevel"));
}