Nuclex.Support/Source/Collections/Variegator.Test.cs
Markus Ewald 63ddef021d Added more unit tests to the floating point helper classes; Variegator unit test is now internal
git-svn-id: file:///srv/devel/repo-conversion/nusu@287 d2e56fa2-650e-0410-a79f-9358c0239efd
2013-07-15 13:38:21 +00:00

85 lines
2.5 KiB
C#

#region CPL License
/*
Nuclex Framework
Copyright (C) 2002-2013 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.Generic;
#if UNITTEST
using NUnit.Framework;
namespace Nuclex.Support.Collections {
/// <summary>Unit Test for the Variegator multi dictionary</summary>
[TestFixture]
internal class VariegatorTest {
/// <summary>
/// Tests whether the default constructor of the reverse comparer works
/// </summary>
[Test]
public void InstancesCanBeCreated() {
new Variegator<int, string>();
}
/// <summary>
/// Verifies that querying for a missing value leads to an exception being thrown
/// </summary>
[Test]
public void QueryingMissingValueThrowsException() {
var variegator = new Variegator<int, string>();
Assert.Throws<KeyNotFoundException>(
() => {
variegator.Get(123);
}
);
}
/// <summary>
/// Verifies that the variegator resolves ambiguous matches according to its design
/// </summary>
[Test]
public void AmbiguityResolvesToLeastRecentValue() {
var variegator = new Variegator<int, string>();
variegator.Add(1, "one");
variegator.Add(1, "eins");
string first = variegator.Get(1);
string second = variegator.Get(1);
// The variegator should have selected the first value by random and then
// returned the other value on the second query
Assert.AreNotEqual(first, second);
// Now the variegator should return the first value again because it is
// the least recently used value
Assert.AreEqual(first, variegator.Get(1));
// Repeating the query, the second should be returned again because now
// it has become the least recently used value
Assert.AreEqual(second, variegator.Get(1));
}
}
} // namespace Nuclex.Support.Collections
#endif // UNITTEST