@Test
public void testNotAllowesNameError() {

  assertThrows(JBBPTokenizerException.class, () -> new JBBPTokenizer("int $$;").next());
  assertThrows(JBBPTokenizerException.class, () -> new JBBPTokenizer("int $a;").next());
  assertThrows(JBBPTokenizerException.class, () -> new JBBPTokenizer("int a%d;").next());
  assertThrows(JBBPTokenizerException.class, () -> new JBBPTokenizer("int 1a;").next());
  assertThrows(JBBPTokenizerException.class, () -> new JBBPTokenizer("int _;").next());
}