In the book, the Everlasting Gobstopper was being tested in The Testing Room. An Oompa-Loompa was sucking on it for a year, and the Gobstopper was just as good as ever. In the 1971 film, a fake Slugworth wanted Charlie Bucket and the other Golden Ticket winners to bring him an Everlasting Gobstopper to him so he can make a new candy. This was a test given to Charlie and the others to test their loyalty, as Wonka made them promise not to show them to anyone else. Veruca was the only one to fail the test. Charlie kept his prmise, returned his Gobstopper to Willy Wonka, and passed the test with flying colors with Wonka giving him the factory.