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Add User story example on state pattern

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This commit is contained in:
Petrutiu Mihai
2016-06-30 17:52:11 +03:00
parent f9631ea99a
commit 0a6d290c3e
5 changed files with 516 additions and 0 deletions
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188
src/StatePattern/ScrumExample/ScrumMotivationalExample.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace StatePattern.ScrumExample
{
public class ScrumMotivationalExample
{
public static void Run()
{
ScrumMotivationalContext context = new ScrumMotivationalContext();
UserStoryMotivational userStory = new UserStoryMotivational();
context.Create(userStory);
context.RemoveFromBacklog(userStory);
context.MoveToBacklog(userStory);
context.StartImplementation(userStory);
context.AcceptanceTestsFail(userStory);
context.StartImplementation(userStory);
context.AcceptanceTestsPassed(userStory);
context.StartImplementation(userStory);
}
}
/// <summary>
/// User story states: New, Active, Resolved, Closed, Removed
/// Actions on user stories:
/// Create - creates a new user story in state New
/// RemoveFromBacklog - moves a user story from state New to State removed
/// StartImplementation - moves user story from state New to state Active
/// MoveToBacklog - moves user story from state Active/Removed to state New
/// CodeFinishedAnUnitTestsPassed - move user story from state Active to state Resolved
/// AcceptanceTestsFail - move user story from state Resolved to state Active
/// AcceptanceTestsPassed - moves user story from state Resolved to state Closed
/// </summary>
public class ScrumMotivationalContext
{
public void Create(UserStoryMotivational userStory)
{
userStory.State = UserStoryState.New;
}
public void RemoveFromBacklog(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("User story removed");
userStory.State = UserStoryState.Removed;
break;
case UserStoryState.Removed:
Console.WriteLine("Already in removed state");
break;
case UserStoryState.Closed:
Console.WriteLine("Once a User Story is Closed, it cannot be removed");
break;
case UserStoryState.Resolved:
Console.WriteLine(@"The item was already resolved, it can be deleted only if the acceptance tests failed and moved to backlog");
break;
case UserStoryState.Active:
Console.WriteLine("You must first move the item to backlog");
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
public void StartImplementation(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("Started work on User story: {0}", userStory.Name);
userStory.State = UserStoryState.Active;
break;
case UserStoryState.Removed:
case UserStoryState.Active:
case UserStoryState.Resolved:
case UserStoryState.Closed:
Console.WriteLine("You can start work only on user stories that are new, current user story state is: {0}", userStory.State);
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
public void MoveToBacklog(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("Already in backlog");
break;
case UserStoryState.Removed:
case UserStoryState.Active:
Console.WriteLine("Moved userstory to backlog");
userStory.State = UserStoryState.New;
break;
case UserStoryState.Resolved:
Console.WriteLine("Item was already resolved, it can be moved to backlog, only if the acceptance tests failed");
break;
case UserStoryState.Closed:
Console.WriteLine("Item was already closed, cannot move to new state");
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
public void CodeFinishedAnUnitTestsPassed(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("Before you can finish the code, you should have started implementation");
break;
case UserStoryState.Active:
Console.WriteLine("I'll notify the testers!");
userStory.State = UserStoryState.Resolved;
break;
case UserStoryState.Resolved:
Console.WriteLine("The item was already resolved");
break;
case UserStoryState.Closed:
Console.WriteLine("Item was already closed");
break;
case UserStoryState.Removed:
Console.WriteLine("Item was removed, you can only move it to backlog again");
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
public void AcceptanceTestsFail(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("Implementation did not start yet, probably that's why the tests are failing");
break;
case UserStoryState.Active:
Console.WriteLine("Implementation is not done yet, probably that's why tests are failing");
break;
case UserStoryState.Resolved:
Console.WriteLine("We'll notify the devs, that they did a bad job");
userStory.State = UserStoryState.Active;
break;
case UserStoryState.Closed:
Console.WriteLine("User story is already closed");
break;
case UserStoryState.Removed:
Console.WriteLine("Item was removed, you can only move it to backlog again");
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
public void AcceptanceTestsPassed(UserStoryMotivational userStory)
{
switch (userStory.State)
{
case UserStoryState.New:
Console.WriteLine("Development didn't even started, you should check your tests");
break;
case UserStoryState.Active:
Console.WriteLine("Development is not yet done");
break;
case UserStoryState.Resolved:
Console.WriteLine("Cool, we'll close the us");
userStory.State = UserStoryState.Closed;
break;
case UserStoryState.Closed:
Console.WriteLine("User story is already closed");
break;
case UserStoryState.Removed:
Console.WriteLine("Item was removed, you can only move it to backlog again");
break;
default:
throw new Exception(string.Format("Cannot process user stories that are in {0} state", userStory.State));
}
}
}
}