AsyncEx.Tests.AsyncParallelTests.CancelledWhileProcessingTest C# (CSharp) Method

        public async Task CancelledWhileProcessingTest()
        {
            var source = new[] { true, false };

            var cts = new CancellationTokenSource();

            await AsyncParallel.ForEach(
                source, new ParallelOptions { CancellationToken = cts.Token, MaxDegreeOfParallelism = 1 },
                async b =>
                {
                    if (b)
                        cts.Cancel();
                    else
                        Assert.Fail();
                });
        }