public void ShouldStartTrafficLightCycle()
{
var configuration = new TrafficLightConfig();
configuration.Add(TrafficLightState.Go, 4);
configuration.Add(TrafficLightState.Stop, 4);
SetTrafficLightConfiguration(configuration);
var lights = new TrafficLights {
_l1, _l2, _l3, _l4
};
var timer = new TrafficLightTimer();
var tc1 = new TetheredTrafficLightCluster {
_l1, _l2
};
tc1.Name = "TC-1";
var pc1 = new PolarTrafficLightCluster(_l3)
{
{ _l4 }
};
pc1.Name = "TC-2";
Assert.IsTrue(lights.Add(tc1));
Assert.IsTrue(lights.Add(pc1));
var controller = new TrafficLightController(lights, timer);
//Assert initial state is where expected
Assert.AreEqual(TrafficLightState.StopThenGo, _l1.State);
Assert.AreEqual(TrafficLightState.StopThenGo, _l2.State);
Assert.AreEqual(TrafficLightState.StopThenGo, _l3.State);
Assert.AreEqual(TrafficLightState.StopThenGo, _l4.State);
controller.Start(); //Will trigger traffic light state changes
Thread.Sleep(2000);
Assert.AreEqual(TrafficLightState.Go, _l1.State);
Assert.AreEqual(TrafficLightState.Go, _l2.State);
Assert.AreEqual(TrafficLightState.Go, _l3.State);
Assert.AreEqual(TrafficLightState.Stop, _l4.State);
Thread.Sleep(5000);
Assert.AreEqual(TrafficLightState.Stop, _l1.State);
Assert.AreEqual(TrafficLightState.Stop, _l2.State);
Assert.AreEqual(TrafficLightState.Stop, _l3.State);
Assert.AreEqual(TrafficLightState.Go, _l4.State);
controller.Stop();
}
public void ShouldRaiseEventWhenClusterRequiresUpdating()
{
var configuration = new TrafficLightConfig();
configuration.Add(TrafficLightState.Go, 3);
var light = new TrafficLight
{
Name = "State Expired Test Light",
Configuration = configuration
};
var cluster = new TetheredTrafficLightCluster {
light
};
var receivedEvents = new List <TetheredClusterRequiresUpdateEventArg>();
cluster.ClusterRequiresUpdateEvent += (sender, e)
=> receivedEvents.Add(e);
light.State = TrafficLightState.Go;
Thread.Sleep(4000);
Assert.AreEqual(1, receivedEvents.Count);
}
public void ShouldRevertToSafeStateAfterStateTimerExpires()
{
var config = new TrafficLightConfig();
config.Add(TrafficLightState.Go, 1); //Set to one second
var light = new TrafficLight {
Configuration = config, State = TrafficLightState.Go
};
Assert.AreEqual(TrafficLightState.Go, light.State);
Thread.Sleep(7000); //Wait for fail-safe to kick in
Assert.AreEqual(TrafficLightState.StopThenGo, light.State);
}
public void ShouldRaiseEventWhenStateExpires()
{
var configuration = new TrafficLightConfig();
configuration.Add(TrafficLightState.Go, 3);
var light = new TrafficLight
{
Name = "State Expired Test Light",
Configuration = configuration
};
var receivedEvents = new List <TrafficLightStateExpirationEventArgs>();
light.StateExpirationEvent += (sender, e)
=> receivedEvents.Add(e);
light.State = TrafficLightState.Go;
Thread.Sleep(4000);
Assert.AreEqual(1, receivedEvents.Count);
Assert.AreEqual(light.Id, receivedEvents[0].TrafficLightId);
}