System.Threading.Tests.ExecutionContextTests.AsyncFlowControlTest C# (CSharp) Method

        public static void AsyncFlowControlTest()
        {
            ThreadTestHelpers.RunTestInBackgroundThread(() =>
            {
                Action<AsyncFlowControl, AsyncFlowControl, bool> verifyEquality =
                    (afc0, afc1, areExpectedToBeEqual) =>
                    {
                        Assert.Equal(areExpectedToBeEqual, afc0.Equals(afc1));
                        Assert.Equal(areExpectedToBeEqual, afc0.Equals((object)afc1));
                        Assert.Equal(areExpectedToBeEqual, afc0 == afc1);
                        Assert.NotEqual(areExpectedToBeEqual, afc0 != afc1);
                    };

                AsyncFlowControl asyncFlowControl0 = ExecutionContext.SuppressFlow();
                ExecutionContext.RestoreFlow();
                AsyncFlowControl asyncFlowControl1 = ExecutionContext.SuppressFlow();
                ExecutionContext.RestoreFlow();
                verifyEquality(asyncFlowControl0, asyncFlowControl1, true);
                verifyEquality(asyncFlowControl1, asyncFlowControl0, true);

                var asyncLocal = new AsyncLocal<int>();
                asyncLocal.Value = 1;
                asyncFlowControl1 = ExecutionContext.SuppressFlow();
                ExecutionContext.RestoreFlow();
                verifyEquality(asyncFlowControl0, asyncFlowControl1, true);
                verifyEquality(asyncFlowControl1, asyncFlowControl0, true);

                asyncFlowControl1 = new AsyncFlowControl();
                verifyEquality(asyncFlowControl0, asyncFlowControl1, false);
                verifyEquality(asyncFlowControl1, asyncFlowControl0, false);

                ThreadTestHelpers.RunTestInBackgroundThread(() => asyncFlowControl1 = ExecutionContext.SuppressFlow());
                verifyEquality(asyncFlowControl0, asyncFlowControl1, false);
                verifyEquality(asyncFlowControl1, asyncFlowControl0, false);
            });
        }