@Test
public void testCompare_EMPTY_DEFAULT() {

  assertThat(TRANSLATION_COMPARATOR.compare(
    new Translation(Language.of(""), "empty"),
    new Translation(Language.of("<default>"), "default")
  )).isLessThan(0);
  assertThat(TRANSLATION_COMPARATOR.compare(
    new Translation(Language.of("<default>"), "default"),
    new Translation(Language.of(""), "empty")
  )).isGreaterThan(0);
}