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add method

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Looly
2021-08-22 17:53:02 +08:00
parent 8be645e9fb
commit 40828f69d1
6 changed files with 138 additions and 34 deletions
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29
hutool-core/src/test/java/cn/hutool/core/collection/ListUtilTest.java
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@@ -9,13 +9,14 @@ import org.junit.Ignore;
import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class ListUtilTest {
@Test
@Ignore
public void split() {
public void splitBenchTest() {
List<String> list = new ArrayList<>();
CollUtil.padRight(list, RandomUtil.randomInt(1000_0000, 1_0000_0000), "test");
@@ -37,6 +38,32 @@ public class ListUtilTest {
Console.log(stopWatch.prettyPrint());
}
@Test
public void splitAvgTest(){
List<List<Object>> lists = ListUtil.splitAvg(null, 3);
Assert.assertEquals(ListUtil.empty(), lists);
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3, 4), 1);
Assert.assertEquals("[[1, 2, 3, 4]]", lists.toString());
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3, 4), 2);
Assert.assertEquals("[[1, 2], [3, 4]]", lists.toString());
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3, 4), 3);
Assert.assertEquals("[[1, 2], [3], [4]]", lists.toString());
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3, 4), 4);
Assert.assertEquals("[[1], [2], [3], [4]]", lists.toString());
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3), 5);
Assert.assertEquals("[[1], [2], [3], [], []]", lists.toString());
lists = ListUtil.splitAvg(Arrays.asList(1, 2, 3), 2);
Assert.assertEquals("[[1, 2], [3]]", lists.toString());
}
@Test(expected = IllegalArgumentException.class)
public void splitAvgNotZero(){
// limit不能小于等于0
ListUtil.splitAvg(Arrays.asList(1, 2, 3, 4), 0);
}
@Test
public void editTest(){
List<String> a = ListUtil.toLinkedList("1", "2", "3");