public async Task If_triggers_critical_action_after_10_failures()
{
var criticalActionTriggered = false;
var timer = new FakeTimer();
var cleaner = new TestableCleaner((time, token) => Task.FromResult(0),
(m, e) => criticalActionTriggered = true, TimeSpan.FromDays(7), TimeSpan.Zero, timer);
await cleaner.Start().ConfigureAwait(false);
for (var i = 0; i < 9; i++)
{
timer.OnError(new Exception("Simulated!"));
}
Assert.IsFalse(criticalActionTriggered);
//Trigger the 10th time
timer.OnError(new Exception("Simulated!"));
Assert.IsTrue(criticalActionTriggered);
criticalActionTriggered = false;
//Trigger again -- the counter should be reset
timer.OnError(new Exception("Simulated!"));
Assert.IsFalse(criticalActionTriggered);
}
public async Task It_uses_correct_cut_off_time()
{
var timer = new FakeTimer();
var cutOffTime = DateTime.MinValue;
var cleaner = new TestableCleaner((time, token) =>
{
cutOffTime = time;
return(Task.FromResult(0));
}, (m, e) => { }, TimeSpan.FromDays(7), TimeSpan.Zero, timer);
await cleaner.Start().ConfigureAwait(false);
var now = new DateTime(2017, 3, 31, 0, 0, 0);
await timer.Tick(now, CancellationToken.None).ConfigureAwait(false);
var expected = new DateTime(2017, 3, 24, 0, 0, 0);
Assert.AreEqual(expected, cutOffTime);
}
public async Task It_resets_the_failure_counter_after_successful_attempt()
{
var criticalActionTriggered = false;
var timer = new FakeTimer();
var cleaner = new TestableCleaner((time, token) => Task.FromResult(0),
(m, e) => criticalActionTriggered = true, TimeSpan.FromDays(7), TimeSpan.Zero, timer);
await cleaner.Start().ConfigureAwait(false);
for (var i = 0; i < 100; i++)
{
if (i % 9 == 0) //Succeed every 9th attempt
{
await timer.Tick(DateTime.UtcNow, CancellationToken.None).ConfigureAwait(false);
}
else
{
timer.OnError(new Exception("Simulated!"));
}
}
Assert.IsFalse(criticalActionTriggered);
}
