opendaylight/md-sal/cds-access-api/src/test/java/org/opendaylight/controller/cluster/access/concepts/AbstractIdentifierTest.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.access.concepts;
   9
  10 import static org.junit.Assert.assertEquals;
  11 import static org.junit.Assert.assertFalse;
  12 import static org.junit.Assert.assertTrue;
  13
  14 import java.io.ByteArrayInputStream;
  15 import java.io.ByteArrayOutputStream;
  16 import java.io.IOException;
  17 import java.io.ObjectInputStream;
  18 import java.io.ObjectOutputStream;
  19 import org.junit.Test;
  20 import org.opendaylight.yangtools.concepts.Identifier;
  21
  22 public abstract class AbstractIdentifierTest<T extends Identifier> {
  23     abstract T object();
  24
  25     abstract T differentObject();
  26
  27     abstract T equalObject();
  28
  29     abstract int expectedSize();
  30
  31     @Test
  32     public final void testEquals() {
  33         assertTrue(object().equals(object()));
  34         assertTrue(object().equals(equalObject()));
  35         assertFalse(object().equals(null));
  36         assertFalse(object().equals("dummy"));
  37         assertFalse(object().equals(differentObject()));
  38     }
  39
  40     @Test
  41     public final void testHashCode() {
  42         assertEquals(object().hashCode(), equalObject().hashCode());
  43     }
  44
  45     @Test
  46     public final void testSerialization() throws Exception {
  47         assertTrue(object().equals(copy(object())));
  48         assertTrue(object().equals(copy(equalObject())));
  49         assertFalse(differentObject().equals(copy(object())));
  50     }
  51
  52     @SuppressWarnings("unchecked")
  53     private T copy(final T obj) throws IOException, ClassNotFoundException {
  54         final ByteArrayOutputStream bos = new ByteArrayOutputStream();
  55         try (ObjectOutputStream oos = new ObjectOutputStream(bos)) {
  56             oos.writeObject(obj);
  57         }
  58
  59         final byte[] bytes = bos.toByteArray();
  60         assertEquals(expectedSize(), bytes.length);
  61
  62         try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bytes))) {
  63             return (T) ois.readObject();
  64         }
  65     }
  66 }