EncodedKeySpecTest.java revision 561ee011997c6c2f1befbfaa9d5f0a99771c1d63 
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/**
19* @author Vladimir N. Molotkov
20*/
21
22package org.apache.harmony.security.tests.java.security.spec;
23
24import java.security.spec.EncodedKeySpec;
25
26import org.apache.harmony.security.tests.support.spec.MyEncodedKeySpec;
27
28import junit.framework.TestCase;
29
30/**
31 * Tests for <code>EncodedKeySpec</code> class fields and methods.
32 *
33 */
34
35public class EncodedKeySpecTest extends TestCase {
36
37    /**
38     * Constructor for EncodedKeySpecTest.
39     * @param name
40     */
41    public EncodedKeySpecTest(String name) {
42        super(name);
43    }
44
45    /**
46     * Tests that <code>getEncoded()</code> method
47     * returns valid byte array
48     */
49    public final void testGetEncoded() {
50
51        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
52        EncodedKeySpec meks = new MyEncodedKeySpec(encodedKey);
53
54        /* Get encoded key */
55        byte[] ek = meks.getEncoded();
56
57        /* Check returned array */
58        boolean result = true;
59        for (int i=0; i<encodedKey.length; i++) {
60            if (encodedKey[i] != ek[i]) {
61                /* indicate failure */
62                result = false;
63            }
64        }
65        /* passed */
66        assertTrue(result);
67    }
68
69    /**
70     * Tests that internal state of the object
71     * can not be modified by modifying initial array value
72     */
73    public final void testIsStatePreserved1() {
74        /* Create initial byte array */
75        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
76
77        EncodedKeySpec meks = new MyEncodedKeySpec(encodedKey);
78
79        /* Modify initial array's value */
80        encodedKey[3] = (byte)5;
81
82        /* Get encoded key */
83        byte[] ek = meks.getEncoded();
84
85        /* Check that byte value has not been changed */
86        assertTrue(ek[3] == (byte)4);
87    }
88
89    /**
90     * Tests that internal state of the object
91     * can not be modified using returned value
92     * of <code>getEncoded()</code> method
93    */
94    public final void testIsStatePreserved2() {
95
96        byte[] encodedKey = new byte[] {(byte)1,(byte)2,(byte)3,(byte)4};
97        EncodedKeySpec meks = new MyEncodedKeySpec(encodedKey);
98
99        /* Get encoded key */
100        byte[] ek = meks.getEncoded();
101        /* Modify returned value */
102        ek[3] = (byte)5;
103        /* Get encoded key again */
104        byte[] ek1 = meks.getEncoded();
105
106        /* Check that byte value has not been changed */
107        assertTrue(ek1[3] == (byte)4);
108    }
109
110}
111