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!141 添加填充List的工具方法

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Merge pull request !141 from Ease/v5-master
This commit is contained in:
Looly
2020-07-23 16:20:58 +08:00
committed by Gitee
parent b47125c9f1 78729283e8
commit 28f149b2bc
2 changed files with 64 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<String> srcList = CollUtil.newArrayList();
List<String> answerList = CollUtil.newArrayList("a", "b");
CollUtil.padLeft(srcList, 1, "b");
CollUtil.padLeft(srcList, 2, "a");
Assert.assertEquals(srcList, answerList);
srcList = CollUtil.newArrayList("a", "b");
answerList = CollUtil.newArrayList("a", "b");
CollUtil.padLeft(srcList, 2, "a");
Assert.assertEquals(srcList, answerList);
srcList = CollUtil.newArrayList("c");
answerList = CollUtil.newArrayList("a", "a", "c");
CollUtil.padLeft(srcList, 3, "a");
Assert.assertEquals(srcList, answerList);
}
@Test
public void testPadRight() {
List<String> srcList = CollUtil.newArrayList("a");
List<String> answerList = CollUtil.newArrayList("a", "b", "b", "b", "b");
CollUtil.padRight(srcList, 5, "b");
Assert.assertEquals(srcList, answerList);
}
@Test
public void isNotEmptyTest() {
Assert.assertFalse(CollUtil.isNotEmpty((Collection<?>) null));