// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Reflection;
using Xunit.v3;
 
namespace Xunit;
 
/// <summary>
///  Apply this attribute to a test class or method to force a full GC collection
///  after each test. This helps prevent <see cref="OutOfMemoryException"/> in x86
///  test runs where memory-intensive operations (e.g. Roslyn compilations) accumulate.
/// </summary>
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public sealed class ForceGCAttribute : BeforeAfterTestAttribute
{
    public override void After(MethodInfo methodUnderTest, IXunitTest test)
    {
        GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true);
        GC.WaitForPendingFinalizers();
        GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced, blocking: true);
    }
}