first commit.

plusone-start/src/test/java/xyz/zhouxy/plusone/SerialTests.java

@@ -0,0 +1,22 @@
+package xyz.zhouxy.plusone;
+
+import java.io.ObjectStreamClass;
+
+import org.junit.jupiter.api.Test;
+
+import lombok.extern.slf4j.Slf4j;
+import xyz.zhouxy.plusone.exception.PlusoneException;
+
+@Slf4j
+class SerialTests {
+
+    @Test
+    void testSerialVersionUID() {
+        var cl = PlusoneException.class;
+        var c = ObjectStreamClass.lookup(cl);
+        var uid = c.getSerialVersionUID();
+        log.info("\n    @java.io.Serial" +
+                 "\n    private static final long serialVersionUID = {}L;", uid);
+    }
+
+}