修改类名，调整包结构。

src/test/java/xyz/zhouxy/plusone/commons/model/ValidatableStringRecordTests.java

@@ -0,0 +1,91 @@
+package xyz.zhouxy.plusone.commons.model;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+import cn.hutool.core.util.ObjectUtil;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import xyz.zhouxy.plusone.commons.annotation.StaticFactoryMethod;
+import xyz.zhouxy.plusone.commons.annotation.ValueObject;
+import xyz.zhouxy.plusone.commons.constant.PatternConsts;
+
+import java.io.Serializable;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+class ValidatableStringRecordTests {
+
+    private static final Logger log = LoggerFactory.getLogger(ValidatableStringRecordTests.class);
+
+    @Test
+    void test() {
+        Username username = Username.of("ZhouXY");
+        assertNotNull(username);
+        String usernameStr = username.value();
+        assertNotNull(usernameStr);
+        log.info("usernameStr: {}", usernameStr);
+
+        List<Username> usernames = Arrays.asList(
+                Username.of("ZhouXY108"),
+                Username.of("code_108"),
+                Username.of("Luquan"),
+                Username.of("Code108")
+        );
+        log.info("{}", Collections.max(usernames));
+        log.info("{}", Collections.max(usernames,
+                Comparator.comparing(o -> o.value().toLowerCase())));
+    }
+
+    @Test
+    void testSerial() {
+        User obj = new User(Username.of("zhouxy"), Email.of("zhouxy@outlook.com"));
+        User snapshot = ObjectUtil.clone(obj);
+        obj.setUsername(Username.of("ZhouXY108"));
+        log.info("snapshot: {}", snapshot);
+        log.info("obj: {}", obj);
+    }
+}
+
+@AllArgsConstructor
+@NoArgsConstructor
+@Data
+class User implements Serializable {
+    private static final long serialVersionUID = 3549288698636099823L;
+    Username username;
+    Email email;
+}
+
+@ValueObject
+class Email extends ValidatableStringRecord {
+    private static final long serialVersionUID = -2092385577843676401L;
+
+    private Email(String value) {
+        super(value, PatternConsts.EMAIL);
+    }
+
+    @StaticFactoryMethod(Email.class)
+    public static Email of(String value) {
+        return new Email(value);
+    }
+}
+
+@ValueObject
+class Username extends ValidatableStringRecord {
+    private static final long serialVersionUID = -7105647514140482394L;
+
+    private Username(String username) {
+        super(username, PatternConsts.USERNAME);
+    }
+
+    @StaticFactoryMethod(Username.class)
+    public static Username of(String username) {
+        return new Username(username);
+    }
+}