public async Task LoopTest()
{
Func <EventWaitAsync, EventWaitAsync, Task> loop = async(EventWaitAsync ewa1, EventWaitAsync ewa2) => {
for (int i = 0; i < 10; ++i)
{
Assert.IsTrue(await ewa1.WaitAsync(1000));
await Task.Delay(100);
ewa2.Signal();
}
};
Func <EventWaitAsync, Task> starter = async(EventWaitAsync ewa) => {
await Task.Delay(100);
ewa.Signal();
};
var start = DateTime.UtcNow;
var ewa1 = new EventWaitAsync();
var ewa2 = new EventWaitAsync();
await Task.WhenAll(loop(ewa1, ewa2), loop(ewa2, ewa1), starter(ewa1));
var time = (DateTime.UtcNow - start).Ticks;
Assert.IsTrue((TimeSpan.TicksPerMillisecond * 2200) <= time && time <= (TimeSpan.TicksPerMillisecond * 2400));
}
public async Task LockedTimeout()
{
var start = DateTime.UtcNow;
try {
var ewa = new EventWaitAsync();
ewa.Signal();
Assert.IsTrue(await ewa.WaitAsync(2000));
Assert.IsFalse(await ewa.WaitAsync(2000));
}
catch (TimeoutException) {
var time = (DateTime.UtcNow - start).Ticks;
Assert.IsTrue((TimeSpan.TicksPerMillisecond * 1900) <= time && time <= (TimeSpan.TicksPerMillisecond * 2100));
}
}
public async Task LockedCancellation()
{
var start = DateTime.UtcNow;
try {
var ewa = new EventWaitAsync();
using (var cts = new CancellationTokenSource(2000)) {
ewa.Signal();
await ewa.WaitAsync(cts.Token);
await ewa.WaitAsync(cts.Token);
}
Assert.Fail();
}
catch (OperationCanceledException) {
var time = (DateTime.UtcNow - start).Ticks;
Assert.IsTrue((TimeSpan.TicksPerMillisecond * 1900) <= time && time <= (TimeSpan.TicksPerMillisecond * 2100));
}
}