public static void Run()
{
UserStory userStory = new UserStory();
userStory.RemoveFromBacklog();
userStory.MoveToBacklog();
userStory.StartImplementation();
userStory.AcceptanceTestsFail();
userStory.StartImplementation();
userStory.AcceptanceTestsPassed();
userStory.StartImplementation();
//This is the first example where a state may not execute all transitions
//There is an active debate if this violates liskov substitution principle or not -> https://en.wikipedia.org/wiki/Liskov_substitution_principle
//but leaving that asside, assuming we will have to add another transition availalable that can be executed only from one state
//we will have to modify all the existing states, just to throw the exception.
//To view what are the allowed transitions, is very hard when using state pattern with roles
}
public ScrumStateRemoved(UserStory userStory)
{
this.userStory = userStory;
}
public ScrumStateActive(UserStory userStory)
{
this.userStory = userStory;
}
public ScrumStateClosed(UserStory userStory)
{
this.userStory = userStory;
}
public ScrumStateNew(UserStory userStory)
{
this.userStory = userStory;
}