}

  /**
   * Testing the behavior in https://github.com/google/guava/issues/1900 - this behavior may want to
   * be changed?
   */
  public void testMapSplitter_extraValueDelimiter() {
    assertThrows(
        IllegalArgumentException.class,
        () -> COMMA_SPLITTER.withKeyValueSeparator("=").split("a=1,c=2="));
  }

  public void testMapSplitter_orderedResults() {