Add test case to check that SecureKeyBlock is serializable.

jpos/src/test/java/org/jpos/security/SecureKeyBlockTest.java

@@ -1,6 +1,6 @@
 /*
  * jPOS Project [http://jpos.org]
- * Copyright (C) 2000-2023 jPOS Software SRL
+ * Copyright (C) 2000-2024 jPOS Software SRL
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -18,20 +18,23 @@
 
 package org.jpos.security;
 
+import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
 import java.io.PrintStream;
 import java.util.LinkedHashMap;
 import java.util.Map;
+
+import org.bouncycastle.util.Arrays;
 import org.jpos.iso.ISOUtil;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.mockito.Mockito;
 
 import static org.junit.jupiter.api.Assertions.*;
 
-/**
- *
- */
 public class SecureKeyBlockTest {
 
     private static final String NL = System.getProperty("line.separator");
@@ -227,4 +230,26 @@ public void testDumpWithNameAndOptHeader() {
         assertEquals(sb.toString(), os.toString());
     }
 
+    @Test
+    public void testSerialization() throws IOException, ClassNotFoundException {
+        String tr31 = "C0088P0TN00E000054CF02CF89CCC36897E3D4AC22D7BBECA1CBD08296A315A47228274A2FAE03EA699AF35F";
+        SecureKeyBlock key = SecureKeyBlockBuilder.newBuilder().build(tr31);
+        key.dump(System.out, "  ");
+        // Serialize instance.lkajsdf
+        Object obj = key;
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        ObjectOutputStream os = new ObjectOutputStream(baos);
+        os.writeObject(obj); // This call errors out if 'obj' is not serializable.
+        byte[] img = baos.toByteArray();
+        // Deserialize.
+        ByteArrayInputStream bais = new ByteArrayInputStream(img);
+        ObjectInputStream is = new ObjectInputStream(bais);
+        SecureKeyBlock key2 = (SecureKeyBlock) is.readObject();
+        key2.dump(System.out, "  ");
+        assertEquals(key.getKeyName(), key2.getKeyName());
+        assertEquals(key.getModeOfUse(), key2.getModeOfUse());
+        assertEquals(key.getKeyUsage().getCode(), key2.getKeyUsage().getCode());
+        assertEquals(key.getAlgorithm().getCode(), key2.getAlgorithm().getCode());
+        assertTrue(Arrays.areEqual(key.getKeyBytes(), key2.getKeyBytes()));
+    }
 }