!87 提供一个自带默认值的Map

Merge pull request !87 from Ease/v5-dev

hutool-core/src/test/java/cn/hutool/core/map/TolerantMapTest.java

@@ -0,0 +1,40 @@
+package cn.hutool.core.map;
+
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.RandomUtil;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.HashMap;
+
+public class TolerantMapTest {
+
+    private final TolerantMap<String, String> map = TolerantMap.of(new HashMap<>(), "default");
+
+    @Before
+    public void before() {
+        map.put("monday", "星期一");
+        map.put("tuesday", "星期二");
+    }
+
+    @Test
+    public void testSerialize() {
+        byte[] bytes = ObjectUtil.serialize(map);
+        TolerantMap<String, String> serializedMap = ObjectUtil.deserialize(bytes);
+        assert serializedMap != map;
+        assert map.equals(serializedMap);
+    }
+
+    @Test
+    public void testClone() {
+        TolerantMap<String, String> clonedMap = ObjectUtil.clone(map);
+        assert clonedMap != map;
+        assert map.equals(clonedMap);
+    }
+
+    @Test
+    public void testGet() {
+        assert "星期二".equals(map.get("tuesday"));
+        assert "default".equals(map.get(RandomUtil.randomString(6)));
+    }
+}