@Test
public void testCompareWithEmptyLists() {
final List<String> working = Collections.emptyList();
final List<String> base = Collections.emptyList();
final CollectionNode node = differ.compare(working, base);
assertThat(node.hasChanges(), is(false));
assertThat(node.hasChildren(), is(false));
}
@Test
public void testCompareWithRemovedItem() throws Exception {
final Collection<String> working = new LinkedList<String>();
final Collection<String> base = new LinkedList<String>(Arrays.asList("foo"));
final CollectionNode node = differ.compare(working, base);
assertThat(node.hasChanges(), is(true));
final Node child =
node.getChild(PropertyPath.createBuilder().withRoot().withCollectionItem("foo").build());
assertThat(child.getState(), is(Node.State.REMOVED));
}
@Test
public void testCompareWithChangedItem() throws Exception {
final List<ObjectWithHashCodeAndEquals> working =
Arrays.asList(new ObjectWithHashCodeAndEquals("foo", "1"));
final List<ObjectWithHashCodeAndEquals> base =
Arrays.asList(new ObjectWithHashCodeAndEquals("foo", "2"));
final CollectionNode node = differ.compare(working, base);
assertThat(node.hasChanges(), is(true));
final PropertyPath propertyPath =
PropertyPath.createBuilder()
.withRoot()
.withCollectionItem(new ObjectWithHashCodeAndEquals("foo"))
.build();
final Node child = node.getChild(propertyPath);
assertThat(child.getState(), is(Node.State.CHANGED));
}