/// <summary>
/// Test whether the constraint is satisfied by a given value
/// </summary>
/// <param name="actual">The value to be tested</param>
/// <returns>True for if the base constraint fails, false if it succeeds</returns>
public override ConstraintResult ApplyTo <TActual>(TActual actual)
{
long now = Stopwatch.GetTimestamp();
long delayEnd = TimestampOffset(now, DelayInterval.AsTimeSpan);
if (PollingInterval.IsNotZero)
{
long nextPoll = TimestampOffset(now, PollingInterval.AsTimeSpan);
while ((now = Stopwatch.GetTimestamp()) < delayEnd)
{
if (nextPoll > now)
{
ThreadUtility.BlockingDelay((int)TimestampDiff(delayEnd < nextPoll ? delayEnd : nextPoll, now).TotalMilliseconds);
}
nextPoll = TimestampOffset(now, PollingInterval.AsTimeSpan);
ConstraintResult result = BaseConstraint.ApplyTo(actual);
if (result.IsSuccess)
{
return(new ConstraintResult(this, actual, true));
}
}
}
if ((now = Stopwatch.GetTimestamp()) < delayEnd)
{
ThreadUtility.BlockingDelay((int)TimestampDiff(delayEnd, now).TotalMilliseconds);
}
return(new ConstraintResult(this, actual, BaseConstraint.ApplyTo(actual).IsSuccess));
}
/// <summary>
/// Test whether the constraint is satisfied by a delegate
/// </summary>
/// <param name="del">The delegate whose value is to be tested</param>
/// <returns>A ConstraintResult</returns>
public override ConstraintResult ApplyTo <TActual>(ActualValueDelegate <TActual> del)
{
long now = Stopwatch.GetTimestamp();
long delayEnd = TimestampOffset(now, DelayInterval.AsTimeSpan);
object actual;
if (PollingInterval.IsNotZero)
{
long nextPoll = TimestampOffset(now, PollingInterval.AsTimeSpan);
while ((now = Stopwatch.GetTimestamp()) < delayEnd)
{
if (nextPoll > now)
{
ThreadUtility.BlockingDelay((int)TimestampDiff(delayEnd < nextPoll ? delayEnd : nextPoll, now).TotalMilliseconds);
}
nextPoll = TimestampOffset(now, PollingInterval.AsTimeSpan);
actual = InvokeDelegate(del);
try
{
ConstraintResult result = BaseConstraint.ApplyTo(actual);
if (result.IsSuccess)
{
return(new ConstraintResult(this, actual, true));
}
}
catch (Exception)
{
// Ignore any exceptions when polling
}
}
}
if ((now = Stopwatch.GetTimestamp()) < delayEnd)
{
ThreadUtility.BlockingDelay((int)TimestampDiff(delayEnd, now).TotalMilliseconds);
}
actual = InvokeDelegate(del);
return(new ConstraintResult(this, actual, BaseConstraint.ApplyTo(actual).IsSuccess));
}
