assertEquals("H_T_T_P", UPPER_CAMEL.to(UPPER_UNDERSCORE, "HTTP"));
    assertEquals("H__T__T__P", UPPER_CAMEL.to(UPPER_UNDERSCORE, "H_T_T_P"));
  }

  public void testUpperUnderscoreToLowerHyphen() {
    assertEquals("foo", UPPER_UNDERSCORE.to(LOWER_HYPHEN, "FOO"));
    assertEquals("foo-bar", UPPER_UNDERSCORE.to(LOWER_HYPHEN, "FOO_BAR"));
  }

  public void testUpperUnderscoreToLowerUnderscore() {