zhouxy108/hutool
1
0
Fork 0
mirror of https://gitee.com/chinabugotech/hutool.git synced 2025-08-18 20:38:02 +08:00
Code Issues Packages Projects Releases Wiki Activity

IterUtil当为List时直接获取值

Browse Source
This commit is contained in:
青韵
2022-08-15 22:39:16 +08:00
parent 2f66008d02
commit 1c457414b9
2 changed files with 18 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
hutool-core/src/test/java/cn/hutool/core/collection/IterUtilTest.java
View File

@@ -5,6 +5,7 @@ import lombok.Data;
import org.junit.Assert;
import org.junit.Test;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
@@ -20,6 +21,18 @@ import java.util.Map;
*/
public class IterUtilTest {
@Test
public void getFirst() {
Assert.assertNull(IterUtil.getFirst((Iterable<Object>) null));
Assert.assertNull(IterUtil.getFirst(CollUtil.newArrayList()));
Assert.assertEquals("1", IterUtil.getFirst(CollUtil.newArrayList("1", "2", "3")));
ArrayDeque<String> deque = new ArrayDeque<>();
deque.add("3");
deque.add("4");
Assert.assertEquals("3", IterUtil.getFirst(deque));
}
@Test
public void getFirstNonNullTest(){
final ArrayList<String> strings = CollUtil.newArrayList(null, null, "123", "456", null);