97183d2335
git-svn-id: file:///srv/devel/repo-conversion/nusu@333 d2e56fa2-650e-0410-a79f-9358c0239efd
70 lines
2.2 KiB
C#
70 lines
2.2 KiB
C#
#region CPL License
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/*
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Nuclex Framework
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Copyright (C) 2002-2017 Nuclex Development Labs
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This library is free software; you can redistribute it and/or
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modify it under the terms of the IBM Common Public License as
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published by the IBM Corporation; either version 1.0 of the
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License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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IBM Common Public License for more details.
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You should have received a copy of the IBM Common Public
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License along with this library
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*/
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#endregion
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using System;
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using System.IO;
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#if UNITTEST
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using NUnit.Framework;
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namespace Nuclex.Support {
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/// <summary>Unit Test for the shared instance provider class</summary>
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[TestFixture]
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internal class SharedTest {
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#region class Dummy
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/// <summary>Dummy class for testing the shared instance provider</summary>
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private class Dummy {
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/// <summary>Initializes a new dummy</summary>
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public Dummy() {}
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}
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#endregion // class Dummy
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/// <summary>
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/// Verifies that the shared instance provider returns the same instance of a class
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/// when asked for the same class twice.
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/// </summary>
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[Test]
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public void TestSameInstance() {
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#pragma warning disable 0618
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Dummy dummyInstance = Shared<Dummy>.Instance;
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Dummy otherDummyInstance = Shared<Dummy>.Instance;
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#pragma warning restore 0618
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// Make sure they're the same instance. We could have put an instance counter in
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// the dummy class, but this might or might not work well across multiple tests
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// because the order in which tests are executed is undefined and Shared<> changes
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// its global state when the first test is run by remembering the instance.
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//
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// Maybe this really is a defect in Shared<> and the class should be equipped with
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// a method such as Discard() or Dispose() to get rid of the instance?
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Assert.AreSame(dummyInstance, otherDummyInstance);
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}
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}
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} // namespace Nuclex.Support
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#endif // UNITTEST
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