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/*
* SonarQube :: Plugin API
* Copyright (C) 2009-2016 SonarSource SA
* mailto:contact AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.api.utils;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.assertj.core.api.Assertions.assertThat;
import static org.sonar.api.utils.Paging.forPageIndex;
public class PagingTest {
@Rule
public ExpectedException expectedException = ExpectedException.none();
@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);
}
@Test
public void test_offset() {
assertThat(forPageIndex(1).withPageSize(5).andTotal(20).offset()).isEqualTo(0);
assertThat(forPageIndex(2).withPageSize(5).andTotal(20).offset()).isEqualTo(5);
}
@Test
public void test_number_of_pages() {
assertThat(forPageIndex(2).withPageSize(5).andTotal(20).pages()).isEqualTo(4);
assertThat(forPageIndex(2).withPageSize(5).andTotal(21).pages()).isEqualTo(5);
assertThat(forPageIndex(2).withPageSize(5).andTotal(25).pages()).isEqualTo(5);
assertThat(forPageIndex(2).withPageSize(5).andTotal(26).pages()).isEqualTo(6);
}
@Test
public void page_size_should_be_strictly_positive() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("Page size must be strictly positive. Got 0");
forPageIndex(5).withPageSize(0).andTotal(5);
}
@Test
public void page_index_should_be_strictly_positive() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("Page index must be strictly positive. Got 0");
forPageIndex(0).withPageSize(5).andTotal(5);
}
@Test
public void total_items_should_be_positive() {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("Total items must be positive. Got -1");
forPageIndex(5).withPageSize(5).andTotal(-1);
}
}
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