From b5ccc1a7c9116ec8f1c79a4e0b5b4c49f0b47798 Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Thu, 24 Jul 2025 16:26:35 +0800
Subject: [PATCH] add test

---
 .../java/cn/hutool/core/util/IssueICOJVZTest.java   | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 hutool-core/src/test/java/cn/hutool/core/util/IssueICOJVZTest.java

diff --git a/hutool-core/src/test/java/cn/hutool/core/util/IssueICOJVZTest.java b/hutool-core/src/test/java/cn/hutool/core/util/IssueICOJVZTest.java
new file mode 100644
index 000000000..1e3e5997d
--- /dev/null
+++ b/hutool-core/src/test/java/cn/hutool/core/util/IssueICOJVZTest.java
@@ -0,0 +1,13 @@
+package cn.hutool.core.util;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class IssueICOJVZTest {
+	@Test
+	void toUnderlineTest(){
+		String field = "PAGE_NAME";
+		field = StrUtil.toUnderlineCase(field).toUpperCase();
+		Assertions.assertEquals("PAGE_NAME", field);
+	}
+}