private static void ChangeToNeighboringState(ManualEventQueue manualQueue) // Running --> Suspended
{
AppStateChangedEvent.Critical criticalEvent = null;
var subscriber = DelegateEventHandler.On <AppStateChangedEvent.Critical>(
e =>
{
criticalEvent = e;
});
TestApp.MainEventQueue.Subscribers.Add(subscriber);
// immediately changes state, using a critical event
TestApp.MoveToState(AppState.Suspended);
Assert.AreEqual(AppState.Suspended, TestApp.CurrentState);
Assert.NotNull(criticalEvent);
Assert.AreEqual(AppState.Running, criticalEvent.OldState);
Assert.AreEqual(AppState.Suspended, criticalEvent.NewState);
// followed by a regular event
Assert.True(manualQueue.HandleNext(out var evnt));
var regularEvent = (AppStateChangedEvent.Regular)evnt;
Assert.AreEqual(AppState.Suspended, regularEvent.CurrentState);
TestApp.MainEventQueue.Subscribers.Remove(subscriber);
}
private static void ChangeToSameState(ManualEventQueue manualQueue)
{
AppStateChangedEvent.Critical criticalEvent = null;
var subscriber = DelegateEventHandler.On <AppStateChangedEvent.Critical>(
e =>
{
criticalEvent = e;
});
TestApp.MainEventQueue.Subscribers.Add(subscriber);
var currentState = TestApp.CurrentState;
TestApp.MoveToState(currentState);
Assert.AreEqual(currentState, TestApp.CurrentState); // no state change
Assert.Null(criticalEvent); // no critical event
Assert.False(manualQueue.HandleNext()); // no regular event
TestApp.MainEventQueue.Subscribers.Remove(subscriber);
}
