Download pdf - A (Brief) Introduction to Story Testing

A Brief Introduction to Story Testing

By Zee Spencer

LeanDogA N A G I L E S O F T W A R E S T U D I O

By @zspencer from @leandog. Download materials at http://spkr8.com/t/8568

Tuesday, October 11, 11

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http://spkr8.com/t/8563


What The Heck Is Story Testing?!









• Formal Scenarios

• That are Collaboratively Generated

• Which Focus On A Specific Aspect Of an Interaction

Story Tests Are









• For a specific interaction

• Formats:

• Given/When/Then

• Permutation Tables

Formal Scenarios









• Scenario: Buy 1 get 1 free

• Given a coupon which offers buy 1 get 1 free for a product

• When I buy 2 of that product

• Then I am only charged for 1 product

Given/When/Then









• Scenario: Incompatible Coupons

• Given two coupons which can’t be used together

• When I try to use them both

• Then no discounts are applied to my cart

Given/When/Then









• Scenario: Using coupons together

• Given two coupons which can be used together

• When I try to use them both

• Then both discounts are applied to my cart

Given/When/Then









• Scenario: Fulfilling a coupon

• Given a coupon which requires you to buy a drink with your meal

• When I just buy a meal

• Then I cannot use the coupon

Given/When/Then









Permutation Tables

Item Price

Apple $0.50

Pear $0.25

Coupon Discount Item

50%off 50% Any

10%off 10% Any

Background

Tests Cart Coupon Price

3xApple, 2xPear 10%off $1.80

5xApple, 10xPear 50%off $2.50

Scenario: Applying Percentage Discounts









Collaboratively Generated

Whole Team

User Activity

User Tasks

User Test

Product Team









Why?

• A Multitude of Perspectives Drives Out Uncertainty

• Collaboratively Determining Acceptance Criteria Shares Knowledge Faster Than a Handoff









Specifically General

• Write scenarios for the happy path

• Write scenarios for edge cases and error conditions

• Write scenarios for performance cases









Let’s Practice!

• Go to the story map nearest to you

• Start breaking the user tasks closest to the top down into scenarios

• Hint: There are no bad scenarios! Write collaboratively!

• In 15 minutes, we’ll reconvene and share









Better Scenarios

• Keep them to 1 Given, 1 When, and 1 Then

• Write at a user goal abstraction

• Don’t use “click/type/etc” You’re writing for a person! not a computer!

• Use your personas!

• More Scenarios the merrier! Survival of the Fittest!









Let’s Practice! (Again!)

• Go back to the story map nearest to you

• Write some more scenarios with your knew knowledge and feedback

• WRITE A BUNCH OF EM!

• In 15 minutes, we’ll reconvene.









Some Final Secrets

• Awesome developers can automate these story tests so that they slowly turn on as development continues.

• When written well, scenarios can be used as living reference documentation for your application

• Iterate and Adapt!









Some Giants Whose Shoulders I Stand On

Patrick Wilson Welsh

Jeff “Chzy” MorganLisa Crispin

Adam Goucher

Aslak HellesøyRobert C Martin

Angela Harms

Matt HeusserMel Bugai

Lanette Creamer

By @zspencer from @leandog. Leave feedback, ask questions and download materials at http://spkr8.com/t/8568









