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feat: add utilities method for list

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This commit is contained in:
easepan
2020-07-20 19:21:25 +08:00
parent 8236ae61f2
commit d9f862ce67
2 changed files with 69 additions and 44 deletions
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42
hutool-core/src/test/java/cn/hutool/core/collection/CollUtilTest.java
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@@ -10,20 +10,7 @@ import lombok.Data;
import org.junit.Assert;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.SortedSet;
import java.util.*;
/**
* 集合工具类单元测试
@@ -32,6 +19,33 @@ import java.util.SortedSet;
*/
public class CollUtilTest {
@Test
public void testPadLeft() {
List<Integer> srcList = CollUtil.newArrayList();
List<Integer> answerList = CollUtil.newArrayList(2, 1);
CollUtil.padLeft(srcList, 1, 1);
CollUtil.padLeft(srcList, 2, 2);
Assert.assertEquals(srcList, answerList);
srcList = CollUtil.newArrayList(1, 2);
answerList = CollUtil.newArrayList(1, 2);
CollUtil.padLeft(srcList, 2, 1);
Assert.assertEquals(srcList, answerList);
srcList = CollUtil.newArrayList(3);
answerList = CollUtil.newArrayList(1, 1, 3);
CollUtil.padLeft(srcList, 3, 1);
Assert.assertEquals(srcList, answerList);
}
@Test
public void testPadRight() {
List<Integer> srcList = CollUtil.newArrayList(6);
List<Integer> answerList = CollUtil.newArrayList(6, 3, 3, 3, 3);
CollUtil.padRight(srcList, 5, 3);
Assert.assertEquals(srcList, answerList);
}
@Test
public void isNotEmptyTest() {
Assert.assertFalse(CollUtil.isNotEmpty((Collection<?>) null));