add test

hutool-core/src/main/java/org/dromara/hutool/core/date/DateUtil.java

@@ -219,7 +219,7 @@ public class DateUtil {
 		return formatDate(new DateTime());
 	}
 
-	// -------------------------------------------------------------- Part of Date start
+	// region ----- Part of Date start
 
 	/**
 	 * 获得年的部分
@@ -497,7 +497,7 @@ public class DateUtil {
 	public static int thisMillisecond() {
 		return millisecond(now());
 	}
-	// -------------------------------------------------------------- Part of Date end
+	// endregion
 
 	/**
 	 * 获得指定日期年份和季节<br>

hutool-http/src/main/java/org/dromara/hutool/http/useragent/UserAgent.java

@@ -209,4 +209,17 @@ public class UserAgent implements Serializable {
 		this.engineVersion = engineVersion;
 	}
 
+	@Override
+	public String toString() {
+		return "UserAgent{" +
+				"mobile=" + mobile +
+				", browser=" + browser +
+				", version='" + version + '\'' +
+				", platform=" + platform +
+				", os=" + os +
+				", osVersion='" + osVersion + '\'' +
+				", engine=" + engine +
+				", engineVersion='" + engineVersion + '\'' +
+				'}';
+	}
 }

hutool-http/src/test/java/org/dromara/hutool/http/useragent/Issue3813Test.java

@@ -0,0 +1,16 @@
+package org.dromara.hutool.http.useragent;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * https://android-developers.googleblog.com/2024/12/user-agent-reduction-on-android-webview.html
+ */
+public class Issue3813Test {
+	@Test
+	void parseTest() {
+		final String ua = "Mozilla/5.0 (Linux; Android 10; K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/125.000 Mobile Safari/537.36";
+		final UserAgent parse = UserAgentUtil.parse(ua);
+		Assertions.assertEquals("UserAgent{mobile=true, browser=Chrome, version='125.000', platform=Android, os=Android, osVersion='10', engine=Webkit, engineVersion='537.36'}", parse.toString());
+	}
+}