|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.UnitTests.Collections
{
public class CachingFactoryTests
{
private sealed class CacheKey
{
public CacheKey(int value) { this.Value = value; }
public readonly int Value;
public static int GetHashCode(CacheKey key) { return key.Value; }
}
private sealed class CacheValue
{
public CacheValue(int value) { this.Value = value; }
public readonly int Value;
}
[WorkItem(620704, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/620704")]
[Fact]
public void ZeroHash()
{
var cache = new CachingFactory<CacheKey, CacheValue>(512,
k => new CacheValue(k.Value + 1),
k => k.Value,
(k, v) => k.Value == v.Value);
var key = new CacheKey(0);
Assert.Equal(0, CacheKey.GetHashCode(key));
CacheValue value;
bool found = cache.TryGetValue(key, out value);
Assert.False(found);
}
}
}
|