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#region Copyright notice and license
// Protocol Buffers - Google's data interchange format
// Copyright 2015 Google Inc. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
#endregion
using System;
using NUnit.Framework;
namespace Google.Protobuf
{
/// <summary>
/// Helper methods when testing equality. NUnit's Assert.AreEqual and
/// Assert.AreNotEqual methods try to be clever with collections, which can
/// be annoying...
/// </summary>
internal static class EqualityTester
{
public static void AssertEquality<T>(T first, T second) where T : IEquatable<T>
{
Assert.IsTrue(first.Equals(second));
Assert.IsTrue(first.Equals((object) second));
Assert.AreEqual(first.GetHashCode(), second.GetHashCode());
}
public static void AssertInequality<T>(T first, T second, bool checkHashcode = true) where T : IEquatable<T>
{
Assert.IsFalse(first.Equals(second));
Assert.IsFalse(first.Equals((object) second));
// While this isn't a requirement, the chances of this test failing due to
// coincidence rather than a bug are very small.
// For such rare cases, an argument can be used to disable the check.
if (checkHashcode && first != null && second != null)
{
Assert.AreNotEqual(first.GetHashCode(), second.GetHashCode());
}
}
}
}