@Test
public void test_pagination() {
Paging paging = forPageIndex(1).withPageSize(5).andTotal(20);
assertThat(paging.pageSize()).isEqualTo(5);
assertThat(paging.pageIndex()).isEqualTo(1);
assertThat(paging.total()).isEqualTo(20);
assertThat(paging.offset()).isEqualTo(0);
assertThat(paging.pages()).isEqualTo(4);
}
private static Collection<? extends Component> pagedComponents(
Collection<? extends Component> components, Paging paging) {
Set<Component> pagedComponents = Sets.newLinkedHashSet();
int index = 0;
for (Component component : components) {
if (index >= paging.offset() && pagedComponents.size() < paging.pageSize()) {
pagedComponents.add(component);
} else if (pagedComponents.size() >= paging.pageSize()) {
break;
}
index++;
}
return pagedComponents;
}
