add map

hutool-core/src/test/java/cn/hutool/core/lang/SimpleCacheTest.java

@@ -50,7 +50,7 @@ public class SimpleCacheTest {
 		final SimpleCache<String, String> cache = new SimpleCache<>();
 		final ConcurrencyTester tester = new ConcurrencyTester(9000);
 		tester.test(()-> cache.get("aaa", ()-> {
-			ThreadUtil.sleep(1000);
+			ThreadUtil.sleep(200);
 			return "aaaValue";
 		}));
 

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

@@ -0,0 +1,22 @@
+package cn.hutool.core.map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+
+public class FuncMapTest {
+
+	@Test
+	public void putGetTest(){
+		final FuncMap<Object, Object> map = new FuncMap<>(HashMap::new,
+				(key)->key.toString().toLowerCase(),
+				(value)->value.toString().toUpperCase());
+
+		map.put("aaa", "b");
+		map.put("BBB", "c");
+
+		Assert.assertEquals("B", map.get("aaa"));
+		Assert.assertEquals("C", map.get("bbb"));
+	}
+}

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

@@ -0,0 +1,52 @@
+package cn.hutool.core.map;
+
+import cn.hutool.core.thread.ConcurrencyTester;
+import cn.hutool.core.thread.ThreadUtil;
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.RandomUtil;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class WeakConcurrentMapTest {
+
+	@Test
+	public void putAndGetTest(){
+		final WeakConcurrentMap<Object, Object> map = new WeakConcurrentMap<>();
+		Object
+				key1 = new Object(), value1 = new Object(),
+				key2 = new Object(), value2 = new Object(),
+				key3 = new Object(), value3 = new Object(),
+				key4 = new Object(), value4 = new Object();
+		map.put(key1, value1);
+		map.put(key2, value2);
+		map.put(key3, value3);
+		map.put(key4, value4);
+
+		Assert.assertEquals(value1, map.get(key1));
+		Assert.assertEquals(value2, map.get(key2));
+		Assert.assertEquals(value3, map.get(key3));
+		Assert.assertEquals(value4, map.get(key4));
+
+		// 清空引用
+		//noinspection UnusedAssignment
+		key1 = null;
+		//noinspection UnusedAssignment
+		key2 = null;
+
+		System.gc();
+		ThreadUtil.sleep(200L);
+
+		Assert.assertEquals(2, map.size());
+	}
+
+	@Test
+	public void getConcurrencyTest(){
+		final WeakConcurrentMap<String, String> cache = new WeakConcurrentMap<>();
+		final ConcurrencyTester tester = new ConcurrencyTester(9000);
+		tester.test(()-> cache.computeIfAbsent("aaa" + RandomUtil.randomInt(2), (key)-> "aaaValue"));
+
+		Assert.assertTrue(tester.getInterval() > 0);
+		String value = ObjectUtil.defaultIfNull(cache.get("aaa0"), cache.get("aaa1"));
+		Assert.assertEquals("aaaValue", value);
+	}
+}