testComparator(
        comparator,
        ImmutableList.of(
            "applesauce",
            "apricot",
            "artichoke",
            "banality",
            "banana",
            "banquet",
            "tangelo",
            "tangerine"));
    reserializeAndAssert(comparator);
  }

  public void testCompound_instance() {
    Comparator<String> comparator = byCharAt(1).compound(byCharAt(0));

    testComparator(
        comparator,
        ImmutableList.of(
            "applesauce",
            "apricot",
            "artichoke",
            "banality",
            "banana",
            "banquet",
            "tangelo",
            "tangerine"));
    reserializeAndAssert(comparator);
  }

  public void testCompound_instance() {
    Comparator<String> comparator = byCharAt(1).compound(byCharAt(0));

    When the pie was all finished, the Owl, as a boon,
    Was kindly permitted to pocket the spoon:
    While the Panther received knife and fork with a growl,
    And concluded the banquet--]

  `What IS the use of repeating all that stuff,' the Mock Turtle
interrupted, `if you don't explain it as you go on?  It's by far
the most confusing thing I ever heard!'

    When the pie was all finished, the Owl, as a boon,
    Was kindly permitted to pocket the spoon:
    While the Panther received knife and fork with a growl,
    And concluded the banquet--]

  `What IS the use of repeating all that stuff,' the Mock Turtle
interrupted, `if you don't explain it as you go on?  It's by far
the most confusing thing I ever heard!'

Matt Conley, Max H. Gerlach, mdfaijul, Mh Kwon, Michael Martis, Michal
Szutenberg, Måns Nilsson, nammbash, Neil Girdhar, Nicholas Vadivelu, Nick
Kreeger, Nirjas Jakilim, okyanusoz, Patrice Vignola, Patrik Laurell, Pedro
Marques, Philipp Hack, Phillip Cloud, Piergiacomo De Marchi, Prashant Kumar,
puneeshkhanna, pvarouktsis, QQ喵, Rajeshwar Reddy T, Rama Ketineni, Reza Rahimi,
Robert Kalmar, rsun, Ryan Kuester, Saduf2019, Sean Morgan, Sean Moriarity,

1F3F1..1F3F7  ; valid                  ;      ; NV8    # 7.0  WHITE PENNANT..LABEL
1F3F8..1F3FF  ; valid                  ;      ; NV8    # 8.0  BADMINTON RACQUET AND SHUTTLECOCK..EMOJI MODIFIER FITZPATRICK TYPE-6
1F400..1F43E  ; valid                  ;      ; NV8    # 6.0  RAT..PAW PRINTS
1F43F         ; valid                  ;      ; NV8    # 7.0  CHIPMUNK