@Test
public void testUnfold() throws Exception {

    String expectedA = "So Long, and Thanks for All the Fish";
    String obfuscated = Main.obfuscate(expectedA);
    String expectedB = "How many roads must a man walk down?";
    String encrypted = Main.encrypt(expectedB);
    Assert.assertEquals(Main.unfold(obfuscated), expectedA.toCharArray());
    Assert.assertEquals(Main.unfold(encrypted), expectedB.toCharArray());
}