public void Should_Execute_Tasks_Sequentially()
{
var poolExec = new DotNetThreadPoolUnitOfExecution();
ISequencer sequencer = this.BuildSequencer(poolExec);
var context = new RaceConditionDetector();
sequencer.Dispatch(() => context.Delay(20));
int current = 0;
bool failed = false;
for (int i = 0; i < 1000; i++)
{
int targetCount = i;
sequencer.Dispatch(
() =>
{
// we check if the task is executed at the proper rank
if (targetCount != current)
{
failed = true;
}
current++;
});
}
Check.That(context.WaitForTasks(1)).IsFalse();
Check.That(failed).IsFalse();
}
public void Sequencer_should_process_fairly()
{
var factory = new UnitOfExecutionsFactory();
var thread = factory.GetDedicatedThread();
var sequencer = this.BuildSequencer(thread);
var context = new RaceConditionDetector();
// we inject delay deliberately, to ensure queueing happens
sequencer.Dispatch(() => context.Delay(20));
var current = 0;
var failed = false;
for (var i = 0; i < 1000; i++)
{
var targetCount = i;
var executor = ((i % 2) == 0) ? thread : (IUnitOfExecution)sequencer;
executor.Dispatch(
() =>
{
// we check if the task is executed at the proper rank
if (targetCount != current)
{
failed = true;
}
current++;
});
}
//thread.Dispose();
Check.That(context.WaitForTasks(1)).IsFalse();
Check.That(failed).IsFalse();
}
public void Should_Execute_Tasks_Non_Concurrently()
{
var poolExec = new DotNetThreadPoolUnitOfExecution();
ISequencer sequencer = this.BuildSequencer(poolExec);
var context = new RaceConditionDetector();
// first task inject delay
sequencer.Dispatch(() => context.Delay(20));
// second task check non concurrence
sequencer.Dispatch(() => context.Delay(20));
// wait for the two tasks to be executed
context.WaitForTasks(2);
Check.That(context.RaceConditionDetected).IsFalse();
}