Nuclex.Support/Source/Licensing/LicenseKey.Test.cs

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#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2008 Nuclex Development Labs
This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.
You should have received a copy of the IBM Common Public
License along with this library
*/
#endregion
using System;
using System.Collections;
#if UNITTEST
using NUnit.Framework;
namespace Nuclex.Support.Licensing {
/// <summary>Unit test for the license key class</summary>
[TestFixture]
public class LicenseKeyTest {
/// <summary>Tests the default constructor of the license key class</summary>
[Test]
public void TestDefaultConstructor() {
new LicenseKey();
}
/// <summary>Validates the correct translation of keys to GUIDs and back</summary>
[Test]
public void TestGuidKeyConversion() {
for(int i = 0; i < 128; ++i) {
// Create a new BitArray with the n.th bit set
BitArray guidBits = new BitArray(128);
guidBits[i] = true;
// Create a GUID from this Bitarray
byte[] guidBytes = new byte[16];
guidBits.CopyTo(guidBytes, 0);
Guid originalGuid = new Guid(guidBytes);
// Convert the GUID into a license key and back to a GUID
string licenseKey = new LicenseKey(originalGuid).ToString();
Guid rebuiltGuid = LicenseKey.Parse(licenseKey).ToGuid();
// Verify that the original GUID matches the fore-and-back converted one
Assert.AreEqual(originalGuid, rebuiltGuid, "Test for GUID bit " + i);
}
}
/// <summary>Tests whether license keys can be modified without destroying them</summary>
[Test]
public void TestKeyModification() {
for(int i = 0; i < 4; ++i) {
for(int j = 0; j < 8; ++j) {
LicenseKey testKey = new LicenseKey(
new Guid(-1, -1, -1, 255, 255, 255, 255, 255, 255, 255, 255)
);
string originalString = testKey.ToString();
testKey[i] &= ~(1 << j);
string modifiedString = testKey.ToString();
Assert.IsTrue(
originalString != modifiedString, "Modified string differs from original"
);
testKey[i] |= (1 << j);
string revertedString = testKey.ToString();
Assert.AreEqual(
originalString, revertedString, "Original state restorable"
);
} // for j
} // for i
}
/// <summary>Tests whether license keys can be modified without destroying them</summary>
[Test, ExpectedException(typeof(ArgumentException))]
public void TestParseInvalidLicenseKey() {
LicenseKey.Parse("hello world");
}
/// <summary>
/// Tests whether an exception is thrown if the indexer of a license key is used
/// with an invalid index to retrieve a component of the key
/// </summary>
[Test, ExpectedException(typeof(IndexOutOfRangeException))]
public void TestGetByIndexerWithInvalidIndex() {
LicenseKey key = new LicenseKey();
int indexMinusOne = key[-1];
}
/// <summary>
/// Tests whether an exception is thrown if the indexer of a license key is used
/// with an invalid index to set a component of the key
/// </summary>
[Test, ExpectedException(typeof(IndexOutOfRangeException))]
public void TestSetByIndexerWithInvalidIndex() {
LicenseKey key = new LicenseKey();
key[-1] = 0;
}
/// <summary>
/// Verifies that a license key can be converted into a byte array
/// </summary>
[Test]
public void TestToByteArray() {
Guid someGuid = Guid.NewGuid();
LicenseKey someKey = new LicenseKey(someGuid);
CollectionAssert.AreEqual(someGuid.ToByteArray(), someKey.ToByteArray());
}
}
} // namespace Nuclex.Support.Licensing
#endif // UNITTEST