Object[] mapInternalArray = map.alternatingKeysAndValues;
    assertSame(builderArray, builderArrayAfterPuts);
    assertSame(builderArray, mapInternalArray);
  }

  public void testBuilder_orderEntriesByValue() {
    ImmutableMap<String, Integer> map =
        new Builder<String, Integer>()
            .orderEntriesByValue(Ordering.natural())
            .put("three", 3)
            .put("one", 1)