@Test
@SuppressWarnings("LocalVariableName")
public void testCombineLists() {

  ObservableList<String> a = FXCollections.observableArrayList("a");
  ObservableList<String> b = FXCollections.observableArrayList("b");
  ObservableList<String> combine = PropertyUtils.combineLists(a, b);
  assertEquals(2, combine.size());
  assertEquals(a.get(0), combine.get(0));
  assertEquals(b.get(0), combine.get(1));
}