// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
#nullable disable
 
using Xunit;
 
namespace Microsoft.Extensions.Internal;
 
public class HashCodeCombinerTest
{
    [Fact]
    public void GivenTheSameInputs_ItProducesTheSameOutput()
    {
        var hashCode1 = HashCodeCombiner.Start();
        var hashCode2 = HashCodeCombiner.Start();
 
        hashCode1.Add(42);
        hashCode1.Add("foo");
        hashCode2.Add(42);
        hashCode2.Add("foo");
 
        Assert.Equal(hashCode1.CombinedHash, hashCode2.CombinedHash);
    }
 
    [Fact]
    public void HashCode_Is_OrderSensitive()
    {
        var hashCode1 = HashCodeCombiner.Start();
        var hashCode2 = HashCodeCombiner.Start();
 
        hashCode1.Add(42);
        hashCode1.Add("foo");
 
        hashCode2.Add("foo");
        hashCode2.Add(42);
 
        Assert.NotEqual(hashCode1.CombinedHash, hashCode2.CombinedHash);
    }
}