ObservableListAggregationTest.java 文件源码

@Test
public void permuteElementsTest()
{
    final ObservableList<Integer> list1 = FXCollections.observableArrayList(1, 2, 0);
    final ObservableList<Integer> list2 = FXCollections.observableArrayList(3);
    final ObservableList<Integer> list3 = FXCollections.observableArrayList(4, 5);

    final ObservableListAggregation<Integer> listAggregation = new ObservableListAggregation<>(list1, list2, list3);
    final AtomicReference<Change<? extends Integer>> change = new AtomicReference<>(null);
    listAggregation.addListener((ListChangeListener<Integer>) c -> {
        change.set(c);
    });

    list1.sort(Integer::compareTo);

    assertNotNull("Change event", change.get());
    assertTrue("Has change", change.get().next());
    assertFalse("Was added", change.get().wasAdded());
    assertFalse("Was removed", change.get().wasRemoved());
    assertFalse("Was update", change.get().wasUpdated());
    assertTrue("Was permuted", change.get().wasPermutated());
    assertEquals("from", 0, change.get().getFrom());
    assertEquals("to", 3, change.get().getTo());
    assertEquals("permitation(0)", 1, change.get().getPermutation(0));
    assertEquals("permitation(1)", 2, change.get().getPermutation(1));
    assertEquals("permitation(2)", 0, change.get().getPermutation(2));
    assertFalse("Has more change", change.get().next());

    assertEquals("size", 6, listAggregation.size());
    assertEquals("get(0)", Integer.valueOf(0), listAggregation.get(0));
    assertEquals("get(1)", Integer.valueOf(1), listAggregation.get(1));
    assertEquals("get(2)", Integer.valueOf(2), listAggregation.get(2));
    assertEquals("get(3)", Integer.valueOf(3), listAggregation.get(3));
    assertEquals("get(4)", Integer.valueOf(4), listAggregation.get(4));
    assertEquals("get(5)", Integer.valueOf(5), listAggregation.get(5));
}