@Test
public void testAnyToken() {

  assertEquals("any token", Parsers.ANY_TOKEN.toString());
  Token token = new Token(0, 1, 'a');
  assertEquals(Character.valueOf('a'),
      Parsers.ANY_TOKEN.from(Parsers.constant(token).times(1)).parse("", mode));
  assertFailure(mode, 
      Parsers.ANY_TOKEN.from(Parsers.constant(token).times(0)), "", 1, 1);
}