String leading = ",a,b,c";
    Iterable<String> letters = COMMA_SPLITTER.split(leading);
    assertThat(letters).containsExactly("", "a", "b", "c").inOrder();
  }

  public void testCharacterSplitWithMultipleLetters() {
    Iterable<String> testCharacteringMotto =
        Splitter.on('-').split("Testing-rocks-Debugging-sucks");
    assertThat(testCharacteringMotto)