From cbf16443dd7a033074183a4da51a0d9a1ecf4245 Mon Sep 17 00:00:00 2001
From: "Mr.Po" <504919167@qq.com>
Date: Tue, 16 Mar 2021 10:56:56 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=B5=8B=E8=AF=95=E7=94=A8?=
 =?UTF-8?q?=E4=BE=8B?=
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---
 .../core/lang/loader/LazyFunLoaderTest.java   | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100644 hutool-core/src/test/java/cn/hutool/core/lang/loader/LazyFunLoaderTest.java

diff --git a/hutool-core/src/test/java/cn/hutool/core/lang/loader/LazyFunLoaderTest.java b/hutool-core/src/test/java/cn/hutool/core/lang/loader/LazyFunLoaderTest.java
new file mode 100644
index 000000000..5155af838
--- /dev/null
+++ b/hutool-core/src/test/java/cn/hutool/core/lang/loader/LazyFunLoaderTest.java
@@ -0,0 +1,42 @@
+package cn.hutool.core.lang.loader;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class LazyFunLoaderTest {
+
+	static class BigObject {
+
+		private boolean isDestroy = false;
+
+		public void destroy() {
+			this.isDestroy = true;
+		}
+	}
+
+	@Test
+	public void test1() {
+
+		LazyFunLoader<BigObject> loader = new LazyFunLoader<>(BigObject::new);
+
+		Assert.assertNotNull(loader.get());
+
+		// 对于某些对象，在程序关闭时，需要进行销毁操作
+		loader.ifInitialized(BigObject::destroy);
+
+		Assert.assertTrue(loader.get().isDestroy);
+	}
+
+	@Test
+	public void test2() {
+
+		LazyFunLoader<BigObject> loader = new LazyFunLoader<>(BigObject::new);
+
+		// 若从未使用，则可以避免不必要的初始化
+		loader.ifInitialized(it -> {
+
+			Assert.fail();
+			it.destroy();
+		});
+	}
+}