private void EnsureStage(AvailabilityTestScope.Stage requiredA, AvailabilityTestScope.Stage requiredB)
{
int requiredStageA = (int)requiredA, requiredStageB = (int)requiredB;
int currStage = _currentStage;
if (currStage != requiredStageA && currStage != requiredStageB)
{
throw new InvalidOperationException($"For this operation {nameof(AvailabilityTestScope)}.{nameof(CurrentStage)}"
+ $" is required to be \'{requiredA}\' (={requiredStageA}) or \'{requiredB}\' (={requiredStageB}),"
+ $" but it is actually \'{((Stage) currStage)}\' (={currStage}).");
}
}
private void TransitionStage(AvailabilityTestScope.Stage from, AvailabilityTestScope.Stage to)
{
int fromStage = (int)from, toStage = (int)to;
int prevStage = Interlocked.CompareExchange(ref _currentStage, toStage, fromStage);
if (prevStage != fromStage)
{
throw new InvalidOperationException($"Error transitioning {nameof(AvailabilityTestScope)}.{nameof(CurrentStage)}"
+ $" to \'{to}\' (={toStage}): Previous {nameof(CurrentStage)} was expected to"
+ $" be \'{from}\' (={fromStage}), but it was actually \'{((Stage) prevStage)}\' (={prevStage}).");
}
}
