Post on 05-Dec-2014
description
Agile Analysis with Use CasesBalancing Simplicity with Utility
Presented by Ted HustedNimbleUsertwitter.com/TedHusted
How is Pong like a Use Case?
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
How do we play use case?1. System sends puck toward player.2. Player moves paddle to meet puck.3. Puck misses paddle.4. System increments score for other player.5. System resets acceleration factor.6. Round repeats for other player.
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
Is that all there is?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
How do we win?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins
How do we win?2a Puck trajectory is too steep2b Puck angles for a corner shot3a Player returns puck3b Puck intersects center segment3c Puck intersects outer segment5a Player wins1. Score exceeds the maximum number of points. 2. System presents game over banner.3. End.
What about diagrams?
How is a user story different?
What’s wrong with this story?Pong is a two-dimensional sports game which simulates table tennis. The player controls an in-game paddle by moving it vertically across the left side of the screen, and can compete against either a computer controlled opponent or another player controlling a second paddle on the opposing side. Players use the paddles to hit a ball back and forth. The aim is for a player to earn more points than the opponent; points are earned when one fails to return the ball to the other.
What’s wrong with this story?Pong is a two-dimensional sports game which simulates table tennis. The player controls an in-game paddle by moving it vertically across the left side of the screen, and can compete against either a computer controlled opponent or another player controlling a second paddle on the opposing side. Players use the paddles to hit a ball back and forth. The aim is for a player to earn more points than the opponent; points are earned when one fails to return the ball to the other.
What’s wrong with this story?Pong is a two-dimensional sports game which simulates table tennis. The player controls an in-game paddle by moving it vertically across the left side of the screen, and can compete against either a computer controlled opponent or another player controlling a second paddle on the opposing side. Players use the paddles to hit a ball back and forth. The aim is for a player to earn more points than the opponent; points are earned when one fails to return the ball to the other.
What’s wrong with this story?Pong is a two-dimensional sports game which simulates table tennis. The player controls an in-game paddle by moving it vertically across the left side of the screen, and can compete against either a computer controlled opponent or another player controlling a second paddle on the opposing side. Players use the paddles to hit a ball back and forth. The aim is for a player to earn more points than the opponent; points are earned when one fails to return the ball to the other.
What can go wrong with this story?
Agile Analysis with Use CasesA mainstay of conventional requirements gathering, use cases can ease the transition to agile methodologies. In this practical program, we explore:
how to write uses caseshow to adapt uses cases to agile projectshow to automate acceptance testing with use cases
What’s our agenda?
About Ted HustedCo-author of JUnit in Action (1st Edition)
Speaker at Ajax Experience, ApacheCon Business Analyst, NimbleUserMember, International Institute for Business Analysis (IIBA)Executive VP, Rochester NY IIBAtwitter.com/TedHusted
Do you take questions?
Slides Available at slideshare.net / ted.husted
How to write use casesThe
Why, What, Where, When, Who, and How
of use cases
Why? Actors Interact
Why? Change Happens
Why? Systems Adapt
What? Main Scenario
First Draft1. System sends puck
toward player.2. Player moves paddle to
meet puck.3. Puck intersects paddle 4. …
Second Draft1. System sends puck
toward player.2. Player moves paddle to
meet puck.3. Puck misses paddle.4. …
What? Main Scenario
What? Extensions
What? Annotations
What? Annotations
What? Annotations1a Browser does not provide cookie 1. System redirects to login page and passes
original URL through a parameter2. System authenticates user (UC-4)3. Return at Step 1
What? Annotations1a Browser does not provide cookie 1. System redirects to login page and passes
original URL through a parameter2. System authenticates user (UC-4)3. Return at Step 1
What? Annotations1a Browser does not provide cookie 1. System redirects to login page and passes
original URL through a parameterhttps://www.domain.org/sso/Signon.aspx?redirectUrl=default.aspx
2. System authenticates user (UC-4)3. Return at Step 1
What? AnnotationsExtensions
1a Browser does not provide cookie 1. System redirects to login page and passes
original URL through a parameter2. System authenticates user (UC-4)3. Return at Step 1
Annotations1a1 Example URL: https://www.domain.org/sso/Signon.aspx?redirectUrl=default.aspx
Where? Can use cases do it all?
Where? Requirements Outline 1. Vision and Scope Document2. Use Cases3. Software Requirements Specification4. Business Rules
Where? Requirements Outline 1. Findings2. Requirements3. Use Cases4. Technical Specification
When? Requirements Analysis
When? Organize and Allocate
Who? You …
Who? Them …
Who? Us!
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Workflow1. Identify the actors2. Identify the use cases3. Identify actor/use case relationships4. Outline use cases5. Refine use cases
How? Use Case Template1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
How? Use Case Template1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
How? Right-size templates1. Name2. Brief description3. Actors4. Main Scenario5. Extensions6. Pre-conditions7. Post-Conditions8. Other stakeholders9. System/sub-system
10. Special requirements
Adapt?
Adapt? Agile
Adapt? Agile
Adapt? Backlog1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
Adapt? Iteration Planning1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
Agile? Backlog Pruning1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
Agile? Epic Iteration1. Name2. Brief description3. Actors4. Main Scenario5. Extensions
1. Pre-conditions2. Post-conditions3. Other stakeholders4. System/sub-system5. Special requirements
Adapt? Training Materials
Adapt? Quality Assurance
Adapt? TestingOpen Signin Page
Signin page: http://domain.org/sso/ Enter credentials
Username: mg Password: va123123
Process Succeeds System Creates Cookie
System Redirects
Adapt? TestingOpen Signin Page
Signin page: http://domain.org/sso/ Enter credentials
Username: mg Password: va123123
Process Succeeds System Creates Cookie
System Redirects
Adapt? TestingOpen Signin Page
Signin page: http://domain.org/sso/ Enter credentials
Username: mg Password: va123123
Process Succeeds System Creates Cookie
System Redirects
Adapt? TestingOpen Signin Page
Signin page: http://domain.org/sso/ Enter credentials
Username: mg Password: va123123
Process Succeeds System Creates Cookie
System Redirects
Adapt? TestingOpen Signin Page
Signin page: http://domain.org/sso/ Enter credentials
Username: mg Password: va123123
Process Succeeds System Creates Cookie
System Redirects
Automate?
Automate? Testing
Automate? Testing
Adapt? Testing
http://seleniumhq.org/
Resources
http://www.rose-hulman.edu/class/csse/csse371/csse371-2007-2008/Lectures/usecases.ppt
Inventor of Pong, Alan Alcorn
DisclaimerAlan Alcorn is not Ted’s cousin,
but he did invent Pong, though without the help of use cases.
Use cases and Pong can both make you cross-eyed