public static void WaitNotificationTest()
{
ThreadTestHelpers.RunTestInBackgroundThread(() =>
{
var tsc = new TestSynchronizationContext();
SynchronizationContext.SetSynchronizationContext(tsc);
Assert.Same(tsc, SynchronizationContext.Current);
var e = new ManualResetEvent(false);
tsc.WaitAction = () => e.Set();
Assert.False(tsc.IsWaitNotificationRequired());
Assert.False(e.WaitOne(0));
tsc.SetWaitNotificationRequired();
Assert.True(tsc.IsWaitNotificationRequired());
Assert.True(e.WaitOne(0));
var mres = new ManualResetEventSlim();
tsc.WaitAction = () => mres.Set();
mres.Reset();
mres.CheckedWait();
e.Reset();
tsc.WaitAction = () => e.Set();
SynchronizationContext.SetSynchronizationContext(new TestSynchronizationContext());
Assert.False(e.WaitOne(0));
SynchronizationContext.SetSynchronizationContext(tsc);
Assert.True(e.WaitOne(0));
e.Reset();
e.CheckedWait();
e.Reset();
var lockObj = new object();
var lockAcquiredFromBackground = new AutoResetEvent(false);
Action waitForThread;
Thread t =
ThreadTestHelpers.CreateGuardedThread(out waitForThread, () =>
{
lock (lockObj)
{
lockAcquiredFromBackground.Set();
e.CheckedWait();
}
});
t.IsBackground = true;
t.Start();
lockAcquiredFromBackground.CheckedWait();
Assert.True(Monitor.TryEnter(lockObj, ThreadTestHelpers.UnexpectedTimeoutMilliseconds));
Monitor.Exit(lockObj);
waitForThread();
e.Reset();
var m = new Mutex();
t = ThreadTestHelpers.CreateGuardedThread(out waitForThread, () =>
{
m.CheckedWait();
try
{
lockAcquiredFromBackground.Set();
e.CheckedWait();
}
finally
{
m.ReleaseMutex();
}
});
t.IsBackground = true;
t.Start();
lockAcquiredFromBackground.CheckedWait();
m.CheckedWait();
m.ReleaseMutex();
waitForThread();
});
}