From 486500d026a1e9da2783d94571d8e2deb57152c1 Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Fri, 24 Jan 2025 16:33:10 +0800
Subject: [PATCH] add test

---
 .../src/test/java/cn/hutool/json/JSONObjectTest.java  | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/hutool-json/src/test/java/cn/hutool/json/JSONObjectTest.java b/hutool-json/src/test/java/cn/hutool/json/JSONObjectTest.java
index 1d5e0d557..f6a36847a 100755
--- a/hutool-json/src/test/java/cn/hutool/json/JSONObjectTest.java
+++ b/hutool-json/src/test/java/cn/hutool/json/JSONObjectTest.java
@@ -729,4 +729,15 @@ public class JSONObjectTest {
 		});
 		assertEquals("value2_edit", jsonObject.get("b"));
 	}
+
+	@Test
+	void issue3844Test(){
+		String camelCaseStr = "{\"userAge\":\"123\"}";
+		final JSONObject entries = new JSONObject(camelCaseStr, null, (pair) -> {
+			pair.setKey(StrUtil.toUnderlineCase(pair.getKey()));
+			return true;
+		});
+
+		Console.log(entries);
+	}
 }