77 lines
2.3 KiB
C#
77 lines
2.3 KiB
C#
//
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// Unit tests for System.Collections.Generic.EqualityComparer
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//
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// Authors:
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// Sebastien Pouliot <sebastien@ximian.com>
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//
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// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using NUnit.Framework;
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namespace MonoTests.System.Collections.Generic {
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[TestFixture]
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public class EqualityComparerTest {
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enum E
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{
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A,
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B
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}
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[Test]
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public void Default_GetHashCode_Null ()
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{
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// https://bugzilla.novell.com/show_bug.cgi?id=372892
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Assert.AreEqual (0, EqualityComparer<object>.Default.GetHashCode (null), "object");
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Assert.AreEqual (0, EqualityComparer<string>.Default.GetHashCode (null), "string");
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}
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[Test]
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public void NonGenericGetHashCodeForNullArgument ()
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{
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IEqualityComparer comparer = EqualityComparer<object>.Default;
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Assert.AreEqual (0, comparer.GetHashCode (null));
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}
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[Test] // #703027
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public void NonGenericEqualsForNullArguments ()
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{
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IEqualityComparer comparer = EqualityComparer<object>.Default;
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Assert.IsTrue (comparer.Equals (null, null));
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}
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[Test]
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public void EnumComparison ()
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{
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Assert.IsFalse (EqualityComparer<E>.Default.Equals (E.A, E.B));
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Assert.IsFalse (EqualityComparer<object>.Default.Equals (E.A, E.B));
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}
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}
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}
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