grpc/src/csharp/Grpc.Core.Tests/NUnitVersionTest.cs

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using System;
using System.Threading;
using System.Threading.Tasks;
using Grpc.Core;
using Grpc.Core.Internal;
using Grpc.Core.Utils;
using NUnit.Framework;

namespace Grpc.Core.Tests
{
    /// <summary>
    /// Tests if the version of nunit-console used is sufficient to run async tests.
    /// </summary>
    public class NUnitVersionTest
    {
        private int testRunCount = 0;

        [TestFixtureTearDown]
        public void Cleanup()
        {
            if (testRunCount != 2)
            {
                Console.Error.WriteLine("You are using and old version of NUnit that doesn't support async tests and skips them instead. " +
                "This test has failed to indicate that.");
                Console.Error.Flush();
                Environment.Exit(1);
            }
        }

        [Test]
        public void NUnitVersionTest1()
        {
            testRunCount++;
        }

        // Old version of NUnit will skip this test
        [Test]
        public async Task NUnitVersionTest2()
        {
            testRunCount++;
            await Task.Delay(10);
        }
    }
}