public void TryAcquire() {
// TryAcquired acquires the lock once
var r = new OnetimeLock();
Assert.IsTrue(r.TryAcquire());
Assert.IsTrue(!r.TryAcquire());
Assert.IsTrue(!r.TryAcquire());
}
public void IsAcquired() {
// IsAcquired determines if the lock is acquired
var r = new OnetimeLock();
Assert.IsTrue(!r.IsAcquired());
Assert.IsTrue(r.TryAcquire());
Assert.IsTrue(r.IsAcquired());
}
public void TryAcquire()
{
// TryAcquired acquires the lock once
var r = new OnetimeLock();
Assert.IsTrue(r.TryAcquire());
Assert.IsTrue(!r.TryAcquire());
Assert.IsTrue(!r.TryAcquire());
}
public void IsAcquired()
{
// IsAcquired determines if the lock is acquired
var r = new OnetimeLock();
Assert.IsTrue(!r.IsAcquired());
Assert.IsTrue(r.TryAcquire());
Assert.IsTrue(r.IsAcquired());
}
public void TryAcquire_Race() {
// racing TryAcquires: only one wins
var r = new OnetimeLock();
var x = Task.WhenAll(
Enumerable.Range(0, 10).Select(
e => Task.Factory.StartNew(
() => r.TryAcquire(),
TaskCreationOptions.LongRunning))).AssertRanToCompletion();
Assert.IsTrue(x.Where(e => e).Count() == 1);
Assert.IsTrue(r.IsAcquired());
}
public void TryAcquire_Race()
{
// racing TryAcquires: only one wins
var r = new OnetimeLock();
var x = Task.WhenAll(
Enumerable.Range(0, 10).Select(
e => Task.Factory.StartNew(
() => r.TryAcquire(),
TaskCreationOptions.LongRunning))).AssertRanToCompletion();
Assert.IsTrue(x.Where(e => e).Count() == 1);
Assert.IsTrue(r.IsAcquired());
}
