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保存 CollectionTools#nullToEmptyXXX 的单元测试。

pull/11/head^2
ZhouXY108 2024-12-29 22:35:53 +08:00
parent f1412d6eea
commit 8a60f4db66
1 changed files with 23 additions and 0 deletions
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src/test/java/xyz/zhouxy/plusone/commons/collection/CollectionToolsTests.java
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@ -16,16 +16,24 @@
package xyz.zhouxy.plusone.commons.collection;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.junit.jupiter.api.Test;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
public class CollectionToolsTests {
@Test
void testIsEmpty() {
@ -46,4 +54,19 @@ public class CollectionToolsTests {
assertFalse(CollectionTools.isEmpty(map));
assertTrue(CollectionTools.isNotEmpty(map));
}
@Test
void testNullToEmpty() {
List<String> list = Lists.newArrayList("Java", "C", "C++", "C#");
assertSame(list, CollectionTools.nullToEmptyList(list));
assertEquals(Collections.emptyList(), CollectionTools.nullToEmptyList(null));
Set<String> set = Sets.newHashSet("Java", "C", "C++", "C#");
assertSame(set, CollectionTools.nullToEmptySet(set));
assertEquals(Collections.emptySet(), CollectionTools.nullToEmptySet(null));
Map<String, Integer> map = ImmutableMap.of("K1", 1, "K2", 2, "K3", 3);
assertSame(map, CollectionTools.nullToEmptyMap(map));
assertEquals(Collections.emptyMap(), CollectionTools.nullToEmptyMap(null));
}
}