}
  }

  public void testLowerHyphenToLowerHyphen() {
    assertEquals("foo", LOWER_HYPHEN.to(LOWER_HYPHEN, "foo"));
    assertEquals("foo-bar", LOWER_HYPHEN.to(LOWER_HYPHEN, "foo-bar"));
  }

  public void testLowerHyphenToLowerUnderscore() {
    assertEquals("foo", LOWER_HYPHEN.to(LOWER_UNDERSCORE, "foo"));
    assertEquals("foo_bar", LOWER_HYPHEN.to(LOWER_UNDERSCORE, "foo-bar"));
  }

  public void testLowerHyphenToLowerCamel() {

 *
 * @author Mike Bostock
 * @since 1.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public enum CaseFormat {
  /** Hyphenated variable naming convention, e.g., "lower-hyphen". */
  LOWER_HYPHEN(CharMatcher.is('-'), "-") {
    @Override
    String normalizeWord(String word) {
      return Ascii.toLowerCase(word);
    }

    @Override
    String convert(CaseFormat format, String s) {

 *
 * @author Mike Bostock
 * @since 1.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public enum CaseFormat {
  /** Hyphenated variable naming convention, e.g., "lower-hyphen". */
  LOWER_HYPHEN(CharMatcher.is('-'), "-") {
    @Override
    String normalizeWord(String word) {
      return Ascii.toLowerCase(word);
    }

    @Override
    String convert(CaseFormat format, String s) {