GuardedStringTests.cs

/*
 * ====================
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved.     
 * 
 * The contents of this file are subject to the terms of the Common Development 
 * and Distribution License("CDDL") (the "License").  You may not use this file 
 * except in compliance with the License.
 * 
 * You can obtain a copy of the License at 
 * http://opensource.org/licenses/cddl1.php
 * See the License for the specific language governing permissions and limitations 
 * under the License. 
 * 
 * When distributing the Covered Code, include this CDDL Header Notice in each file
 * and include the License file at http://opensource.org/licenses/cddl1.php.
 * If applicable, add the following below this CDDL Header, with the fields 
 * enclosed by brackets [] replaced by your own identifying information: 
 * "Portions Copyrighted [year] [name of copyright owner]"
 * ====================
 * Portions Copyrighted 2014 ForgeRock AS.
 */
using System;
using System.Text;
using Org.IdentityConnectors.Common.Security;
using Org.IdentityConnectors.Framework.Common.Serializer;
using NUnit.Framework;

namespace FrameworkTests
{
    [TestFixture]
    public class GuardedStringTests
    {
        [Test]
        public void TestBasics()
        {
            GuardedString ss = new GuardedString();
            ss.AppendChar('f');
            ss.AppendChar('o');
            ss.AppendChar('o');
            ss.AppendChar('b');
            ss.AppendChar('a');
            ss.AppendChar('r');
            String decrypted = DecryptToString(ss);
            Assert.AreEqual("foobar", decrypted);
            String hash = ss.GetBase64SHA1Hash();
            Assert.IsTrue(ss.VerifyBase64SHA1Hash(hash));
            ss.AppendChar('2');
            Assert.IsFalse(ss.VerifyBase64SHA1Hash(hash));
        }
        [Test]
        public void TestUnicode()
        {

            for (int i = 0; i < 0xFFFF; i++)
            {
                int expected = i;
                char c = (char)i;
                GuardedString gs = new GuardedString();
                gs = (GuardedString)SerializerUtil.CloneObject(gs);
                gs.AppendChar(c);
                gs.Access(new GuardedString.LambdaAccessor(clearChars =>
                {
                    int v = (int)clearChars[0];
                    Assert.AreEqual(expected, v);
                }));

            }
        }

        [Test]
        public void TestEquals()
        {
            GuardedString str1 = new GuardedString();
            GuardedString str2 = new GuardedString();
            Assert.AreEqual(str1, str2);
            str2.AppendChar('2');
            Assert.AreNotEqual(str1, str2);
            str1.AppendChar('2');
            Assert.AreEqual(str1, str2);
        }

        /// <summary>
        /// Highly insecure method! Do not do this in production
        /// code.
        /// </summary>
        /// <remarks>
        /// This is only for test purposes
        /// </remarks>
        private String DecryptToString(GuardedString str)
        {
            StringBuilder buf = new StringBuilder();
            str.Access(new GuardedString.LambdaAccessor(
                                            array =>
                                            {
                                                for (int i = 0; i < array.Length; i++)
                                                {
                                                    buf.Append(array[i]);
                                                }
                                            }));
            return buf.ToString();
        }
    }
}