/*
* Copyright (c) 2002-2012 Alibaba Group Holding Limited.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.citrus.util;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
/**
* 测试<code>Paginator</code>。
*
* @author Michael Zhou
*/
public class PaginatorTests {
private Paginator pg;
@Before
public void init() {
pg = new Paginator(10);
}
/** 测试无限多项。 */
@Test
public void unknownItems() {
assertEquals(Paginator.UNKNOWN_ITEMS, pg.getItems());
assertEquals(10, pg.getItemsPerPage());
// 初始状态，第1页
assertEquals(1, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(1, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(2, pg.getNextPage());
assertEquals(11, pg.getNextPage(10));
assertEquals(1, pg.getBeginIndex());
assertEquals(10, pg.getEndIndex());
assertEquals(0, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertTrue(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
// 下一页，第2页
pg.setPage(2);
assertEquals(2, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(1, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(3, pg.getNextPage());
assertEquals(12, pg.getNextPage(10));
assertEquals(11, pg.getBeginIndex());
assertEquals(20, pg.getEndIndex());
assertEquals(10, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertTrue(pg.isDisabledPage(2));
// 第11页
pg.setPage(11);
assertEquals(11, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(10, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(12, pg.getNextPage());
assertEquals(21, pg.getNextPage(10));
assertEquals(101, pg.getBeginIndex());
assertEquals(110, pg.getEndIndex());
assertEquals(100, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(11));
assertFalse(pg.isDisabledPage(12));
}
/** 测试有限多项。 */
@Test
public void limitedItems() {
pg.setItems(123);
assertEquals(13, pg.getPages());
assertEquals(123, pg.getItems());
assertEquals(10, pg.getItemsPerPage());
// 初始状态，第1页
assertEquals(1, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(1, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(2, pg.getNextPage());
assertEquals(11, pg.getNextPage(10));
assertEquals(13, pg.getLastPage());
assertEquals(1, pg.getBeginIndex());
assertEquals(10, pg.getEndIndex());
assertEquals(0, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertTrue(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertFalse(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
// 下一页，第2页
pg.setPage(2);
assertEquals(2, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(1, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(3, pg.getNextPage());
assertEquals(12, pg.getNextPage(10));
assertEquals(11, pg.getBeginIndex());
assertEquals(20, pg.getEndIndex());
assertEquals(10, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertTrue(pg.isDisabledPage(2));
assertFalse(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
// 第11页
pg.setPage(11);
assertEquals(11, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(10, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(12, pg.getNextPage());
assertEquals(13, pg.getNextPage(10));
assertEquals(101, pg.getBeginIndex());
assertEquals(110, pg.getEndIndex());
assertEquals(100, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(11));
assertFalse(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
// 第13页（最后一页）
pg.setPage(13);
assertEquals(13, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(12, pg.getPreviousPage());
assertEquals(3, pg.getPreviousPage(10));
assertEquals(13, pg.getNextPage());
assertEquals(13, pg.getNextPage(10));
assertEquals(121, pg.getBeginIndex());
assertEquals(123, pg.getEndIndex());
assertEquals(120, pg.getOffset());
assertEquals(3, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertFalse(pg.isDisabledPage(11));
assertTrue(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
}
@Test
public void setItems() {
pg.setItems(123);
pg.setPage(11);
pg.setItems(133); // 改变items
assertEquals(14, pg.getPages());
assertEquals(133, pg.getItems());
assertEquals(10, pg.getItemsPerPage());
assertEquals(11, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(10, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(12, pg.getNextPage());
assertEquals(14, pg.getNextPage(10));
assertEquals(101, pg.getBeginIndex());
assertEquals(110, pg.getEndIndex());
assertEquals(100, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(11));
assertFalse(pg.isDisabledPage(13));
assertFalse(pg.isDisabledPage(14));
assertTrue(pg.isDisabledPage(15));
}
@Test
public void setItemsPerPage() {
pg.setItems(123);
pg.setPage(11);
// 变大itemsPerPage
pg.setItemsPerPage(20);
assertEquals(7, pg.getPages());
assertEquals(123, pg.getItems());
assertEquals(20, pg.getItemsPerPage());
assertEquals(6, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(5, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(7, pg.getNextPage());
assertEquals(7, pg.getNextPage(10));
assertEquals(101, pg.getBeginIndex());
assertEquals(120, pg.getEndIndex());
assertEquals(100, pg.getOffset());
assertEquals(20, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(6));
assertFalse(pg.isDisabledPage(7));
assertTrue(pg.isDisabledPage(8));
// 变小itemsPerPage
pg.setItemsPerPage(5);
assertEquals(25, pg.getPages());
assertEquals(123, pg.getItems());
assertEquals(5, pg.getItemsPerPage());
assertEquals(21, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(20, pg.getPreviousPage());
assertEquals(11, pg.getPreviousPage(10));
assertEquals(22, pg.getNextPage());
assertEquals(25, pg.getNextPage(10));
assertEquals(101, pg.getBeginIndex());
assertEquals(105, pg.getEndIndex());
assertEquals(100, pg.getOffset());
assertEquals(5, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(21));
assertFalse(pg.isDisabledPage(22));
assertTrue(pg.isDisabledPage(26));
}
@Test
public void noItems() {
pg.setItems(0);
pg.setPage(1);
assertEquals(0, pg.getPages());
assertEquals(10, pg.getItemsPerPage());
assertEquals(0, pg.getPage());
assertEquals(0, pg.getFirstPage());
assertEquals(0, pg.getPreviousPage());
assertEquals(0, pg.getPreviousPage(10));
assertEquals(0, pg.getNextPage());
assertEquals(0, pg.getNextPage(10));
assertEquals(0, pg.getBeginIndex());
assertEquals(0, pg.getEndIndex());
assertEquals(0, pg.getOffset());
assertEquals(0, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertTrue(pg.isDisabledPage(1));
assertTrue(pg.isDisabledPage(2));
assertTrue(pg.isDisabledPage(21));
assertTrue(pg.isDisabledPage(22));
assertTrue(pg.isDisabledPage(26));
}
@Test
public void setItem() {
pg.setItems(123);
// 13页
pg.setItem(122);
assertEquals(13, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(12, pg.getPreviousPage());
assertEquals(3, pg.getPreviousPage(10));
assertEquals(13, pg.getNextPage());
assertEquals(13, pg.getNextPage(10));
assertEquals(121, pg.getBeginIndex());
assertEquals(123, pg.getEndIndex());
assertEquals(120, pg.getOffset());
assertEquals(3, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertFalse(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertFalse(pg.isDisabledPage(11));
assertTrue(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
// 1页
pg.setItem(0);
assertEquals(1, pg.getPage());
assertEquals(1, pg.getFirstPage());
assertEquals(1, pg.getPreviousPage());
assertEquals(1, pg.getPreviousPage(10));
assertEquals(2, pg.getNextPage());
assertEquals(11, pg.getNextPage(10));
assertEquals(13, pg.getLastPage());
assertEquals(1, pg.getBeginIndex());
assertEquals(10, pg.getEndIndex());
assertEquals(0, pg.getOffset());
assertEquals(10, pg.getLength());
assertTrue(pg.isDisabledPage(0));
assertTrue(pg.isDisabledPage(1));
assertFalse(pg.isDisabledPage(2));
assertFalse(pg.isDisabledPage(13));
assertTrue(pg.isDisabledPage(14));
}
@Test
public void slider() {
pg.setItems(0);
assertEquals(0, pg.getSlider().length);
pg.setItems(123);
assertEquals(0, pg.getSlider(0).length);
assertSlide(1, 2, 3, 4, 5, 6, 7);
pg.setPage(2);
assertSlide(1, 2, 3, 4, 5, 6, 7);
pg.setPage(3);
assertSlide(1, 2, 3, 4, 5, 6, 7);
pg.setPage(4);
assertSlide(1, 2, 3, 4, 5, 6, 7);
pg.setPage(5);
assertSlide(2, 3, 4, 5, 6, 7, 8);
pg.setPage(6);
assertSlide(3, 4, 5, 6, 7, 8, 9);
pg.setPage(7);
assertSlide(4, 5, 6, 7, 8, 9, 10);
pg.setPage(8);
assertSlide(5, 6, 7, 8, 9, 10, 11);
pg.setPage(9);
assertSlide(6, 7, 8, 9, 10, 11, 12);
pg.setPage(10);
assertSlide(7, 8, 9, 10, 11, 12, 13);
pg.setPage(11);
assertSlide(7, 8, 9, 10, 11, 12, 13);
pg.setPage(12);
assertSlide(7, 8, 9, 10, 11, 12, 13);
pg.setPage(13);
assertSlide(7, 8, 9, 10, 11, 12, 13);
}
private void assertSlide(int a, int b, int c, int d, int e, int f, int g) {
int i = 0;
int[] slider = pg.getSlider(7);
assertEquals(a, slider[i++]);
assertEquals(b, slider[i++]);
assertEquals(c, slider[i++]);
assertEquals(d, slider[i++]);
assertEquals(e, slider[i++]);
assertEquals(f, slider[i++]);
assertEquals(g, slider[i++]);
}
}