1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.numbers.core;
19
20 import java.io.ByteArrayInputStream;
21 import java.io.ByteArrayOutputStream;
22 import java.io.IOException;
23 import java.io.ObjectInputStream;
24 import java.io.ObjectOutputStream;
25
26 /**
27 * Test utilities.
28 */
29 public final class TestUtils {
30 /**
31 * Collection of static methods used in math unit tests.
32 */
33 private TestUtils() {
34 }
35
36 /**
37 * Serializes an object to a bytes array and then recovers the object from the bytes array.
38 * Returns the deserialized object.
39 *
40 * @param o object to serialize and recover
41 * @return the recovered, deserialized object
42 */
43 public static Object serializeAndRecover(Object o) {
44 try {
45 // serialize the Object
46 final ByteArrayOutputStream bos = new ByteArrayOutputStream();
47 final ObjectOutputStream so = new ObjectOutputStream(bos);
48 so.writeObject(o);
49
50 // deserialize the Object
51 final ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
52 final ObjectInputStream si = new ObjectInputStream(bis);
53 return si.readObject();
54 } catch (final IOException ioe) {
55 return null;
56 } catch (final ClassNotFoundException cnfe) {
57 return null;
58 }
59 }
60 }