MergeObservableTest.java 文件源码

@Test
public void changingItemFromBackingListChangesItInList() {
    MergeObservableList<String> list = new MergeObservableList<>();
    ObservableList.OnListChangedCallback callback = mock(ObservableList.OnListChangedCallback.class);
    list.addOnListChangedCallback(callback);
    list.insertItem("test1");
    ObservableList<String> items = new ObservableArrayList<>();
    items.add("test2");
    list.insertList(items);
    items.set(0, "test3");

    assertThat(list)
            .hasSize(2)
            .containsExactly("test1", "test3");
    verify(callback).onItemRangeInserted(list, 0, 1);
    verify(callback).onItemRangeInserted(list, 1, 1);
    verify(callback).onItemRangeChanged(list, 1, 1);
}