src/System.Runtime.InteropServices/tests/System/Runtime/InteropServices/ComUnregisterFunctionAttributeTests.cs


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// 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.

using System.Linq;
using System.Reflection;
using Xunit;

namespace System.Runtime.InteropServices.Tests
{
    public class ComUnregisterFunctionAttributeTests
    {
        [ComUnregisterFunction]
        private int Func(int a, int b)
        {
            return a + b;
        }

        [Fact]
        public void Exists()
        {
            var type = typeof(ComUnregisterFunctionAttributeTests);
            var method = type.GetTypeInfo().DeclaredMethods.Single(m => m.Name == "Func");
            var attr = method.GetCustomAttributes(typeof(ComUnregisterFunctionAttribute), false).OfType<ComUnregisterFunctionAttribute>().SingleOrDefault();
            Assert.NotNull(attr);
        }
    }
}