public void Cancel_Loop_That_Is_Executing_An_Action()
{
"Given a loop that executes a long running action every 1 tick"
._(() =>
{
var loop = new RxLoopCancellable(_testSchedulers, _longRunningAction, TimeSpan.FromTicks(1));
_tokenSource = new CancellationTokenSource();
loop.StartLoop(_tokenSource.Token);
});
"Given the loop starts but we cancel the loop after a 0.2 second delay"
._(() =>
{
var timerToStopLoop = new Timer(200);
timerToStopLoop.Elapsed += (sender, args) => _tokenSource.Cancel();
timerToStopLoop.Start();
_testSchedulers.AdvanceAllBy(20.Ticks());
});
"The long running action should gracefully exit and the loop should stop"
._(() =>
{
_longRunningActionCancelled.Should().BeTrue();
_callCount.Should().BeGreaterThan(1000);
});
}
public void AsTimePasses_TheLoopAction_ShouldBePerformedMultipleTimes()
{
"Given a loop that increments a call counter every 5 ticks"
._(() =>
{
var loop = new RxLoopCancellable(_testSchedulers, _action, TimeSpan.FromTicks(5));
_tokenSource = new CancellationTokenSource();
loop.StartLoop(_tokenSource.Token);
});
"Given an initial call count of 0"
._(() =>
{
_callCount.Should().Be(0);
});
"Then the call count should be one after 4 ticks"
._(() =>
{
_testSchedulers.AdvanceAllBy(TimeSpan.FromTicks(4));
_callCount.Should().Be(1);
});
"Then the call count should be 2 after 5 ticks"
._(() =>
{
_testSchedulers.AdvanceAllBy(TimeSpan.FromTicks(2));
_callCount.Should().Be(2);
});
"Then the call count should be 3 after 10 ticks"
._(() =>
{
_testSchedulers.AdvanceAllBy(TimeSpan.FromTicks(5));
_callCount.Should().Be(3);
});
"Then the call count should be 11 after 50 ticks"
._(() =>
{
_testSchedulers.AdvanceAllBy(TimeSpan.FromTicks(40));
_callCount.Should().Be(11);
});
"Then let's cancel the loop"
._(() =>
{
_tokenSource.Cancel();
});
"Then the call count should not change while time elapses"
._(() =>
{
_testSchedulers.AdvanceAllBy(1000.Ticks());
_callCount.Should().Be(11);
});
}