BDD agile china2012_share

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This document provides an overview of Behavior Driven Development (BDD). It discusses how BDD is focused on development rather than testing. BDD uses user stories and acceptance criteria written in a Given/When/Then format to define requirements and drive the development process. Developers use test-driven development, writing tests before code, to ensure all acceptance criteria are met. The document also outlines how BDD fits into the agile development process and provides coaching tips for implementing BDD.

Technology Education

BEHAVIOR
DRIVEN
DEVELOPMENT
Adding value with less work

GIUSEPPE DE SIMONE
› Agile/Lean coach, Trainer, Lecturer, Change catalyst,
Visionary, Scout leader. Passionate to help people grow.

› mail: giuseppe.desimone@ericsson.com

› Twitter: @giusdesimone

› web:
– Agile Coaching Network

– http://it.linkedin.com/in/giuseppedesimone

Page 2

nt
m ou
h ea
g t ial.
izin ent
xim ess
m a - is
of e -
art on
th e o t d
t y -- rk n
lici f wo
S imp o

DELIVER AS FAST AS
POSSIBLE
Page 4 Learn as fast as possible

BDD IS NOT ABOUT TESTING...

…IT’S ABOUT DEVELOPMENT!

Page 6

USER STORY

As a Returning Customer I want the
system to remember my details so I
can purchase goods more quickly.

Acceptance criteria:
Scenario: Review Details Before Purchase
Given I’m on the Amazon website
And I’m logged in as a returning customer
When I click the “1-Click” button
Then I should see my order details

Page 7

Acceptance Criteria

Page 8

Acceptance Tests

Acceptance Criteria

Page 9

Acceptance Tests

Acceptance Criteria

Page 10

Acceptance Tests

Acceptance Criteria

Page 11

Acceptance Tests

Acceptance Criteria

Page 12

Acceptance Tests

Acceptance Criteria

Page 13

Acceptance Tests

Acceptance Criteria

Page 14

Acceptance Tests

Acceptance Criteria

Page 15

Acceptance Tests

Acceptance Criteria

Page 16

Acceptance Tests

Acceptance Criteria

Page 17

Acceptance Tests

Acceptance Criteria

Page 18

Acceptance Tests

Acceptance Criteria

Page 19

Acceptance Tests

Acceptance Criteria

Page 20
D
O
N
E

Acceptance Tests

TEST DRIVEN DEVELOPMENT

start with a failing Quickly write the refactoring
test simplest code needed
to pass the test

Repeat as needed to meet requirements
Test everything that could possibly break

Page 21

TESTING QUADRANTS
Business-facing
D
BD

Critique the product
Exploratory Tests
Support the team
Acceptance
Usability Tests
Tests
UAT

Q2 Q3
Q1 Q4
D
TD Unit Tests
Performance,
Security,
Component Tests
Load Tests

Technology-facing
Page 22

DESIGN, IMPLEMENT,
TEST ALL IN ONE...

Traditional Development

Analyze Implement Test

Deliverable
Agile Development

Deliverable

Page 23

Given <context>
When <action>
Then <expected result>

Page 24

BDD INSTANT WORKSHOP

› What could be for you (your team, your context) the
benefits of using BDD?

› What do you miss to start tomorrow?

lk
ta
Page 26

SM
ScrumMaster

…
...

PO TM
Product Owner
Development Team

Sprint Review Meeting

Page 31

REFLECTIONS
› BDD is NOT a tool

› Always challenge the desired behaviour

› Fast feedback is essential

› Communicate and collaborate

› Risk-first!

Page 32

COACHING BDD
› No special secret!

› Teaching and mentoring

› “Ha-ha” moments need to happen for lasting effects

› Grow agilists

› Stimulate curiosity and enthusiasm
– Throw questions and challenges

Page 33

USEFUL LINKS
› Cucumber site
– cukes.info

› Liz Keogh’s blog
– lizkeogh.com

› Gojko Adzic web site
– gojko.net

Page 35

Technical stream: Moving to test- and behaviour-driven development In this session Kim will be going over the benefits of introducing TDD and BDD: How to introduce them, their differences, how to deal with push back from team members and upper management. The benefits of driving our development with tests, how it helps the quality and maintainability of our software, how it helps the business and the client. The types of tests that best serve us for the different layers of our application development and how business people can get benefit from TDD and especially BDD. When Kim’s not working at his day job as a senior software engineer, consultant, Scrum Master, you can find him indulging his passions of software architecture, creating and exploiting software and networks. In order to develop and release software faster, it's Kim’s aim to increase the awareness for the need of higher quality incremental software releases.

Testausala on suuressa murroksessa. Muutos heijastuu testaajien työhön siten, että testaajan tulee miettiä entistä luovemmin suhtautumistaan omaan työhönsä. Sen sijaan että kehittäjät ja testaajat rajoittavat työskentelynsä yhteen tuotantotapaan, kuten vaikkapa yhteen tiettyyn Agile-viitekehykseen, heidän tulee itse osoittaa ketteryyttä valitsemalla ja yhdistelemällä luovasti erilaisia tuotantotapoja tilanteen vaatimalla tavalla.

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BDD agile china2012_share

1. BEHAVIOR DRIVEN DEVELOPMENT Adding value with less work

2. GIUSEPPE DE SIMONE › Agile/Lean coach, Trainer, Lecturer, Change catalyst, Visionary, Scout leader. Passionate to help people grow. › mail: giuseppe.desimone@ericsson.com › Twitter: @giusdesimone › web: – Agile Coaching Network – http://it.linkedin.com/in/giuseppedesimone Page 2

3. MANIFESTO OF SW CRAFTSMANSHIP Page 3

4. nt m ou h ea g t ial. izin ent xim ess m a - is of e - art on th e o t d t y -- rk n lici f wo S imp o DELIVER AS FAST AS POSSIBLE Page 4 Learn as fast as possible

5. BDD IN A NUTSHELL Page 5

6. BDD IS NOT ABOUT TESTING... …IT’S ABOUT DEVELOPMENT! Page 6

7. USER STORY As a Returning Customer I want the system to remember my details so I can purchase goods more quickly. Acceptance criteria: Scenario: Review Details Before Purchase Given I’m on the Amazon website And I’m logged in as a returning customer When I click the “1-Click” button Then I should see my order details Page 7

8. Acceptance Criteria Page 8 Acceptance Tests

9. Acceptance Criteria Page 9 Acceptance Tests

10. Acceptance Criteria Page 10 Acceptance Tests

11. Acceptance Criteria Page 11 Acceptance Tests

12. Acceptance Criteria Page 12 Acceptance Tests

13. Acceptance Criteria Page 13 Acceptance Tests

14. Acceptance Criteria Page 14 Acceptance Tests

15. Acceptance Criteria Page 15 Acceptance Tests

16. Acceptance Criteria Page 16 Acceptance Tests

17. Acceptance Criteria Page 17 Acceptance Tests

18. Acceptance Criteria Page 18 Acceptance Tests

19. Acceptance Criteria Page 19 Acceptance Tests

20. Acceptance Criteria Page 20 D O N E Acceptance Tests

21. TEST DRIVEN DEVELOPMENT start with a failing Quickly write the refactoring test simplest code needed to pass the test Repeat as needed to meet requirements Test everything that could possibly break Page 21

22. TESTING QUADRANTS Business-facing D BD Critique the product Exploratory Tests Support the team Acceptance Usability Tests Tests UAT Q2 Q3 Q1 Q4 D TD Unit Tests Performance, Security, Component Tests Load Tests Technology-facing Page 22

23. DESIGN, IMPLEMENT, TEST ALL IN ONE... Traditional Development Analyze Implement Test Deliverable Agile Development Deliverable Page 23

24. Given <context> When <action> Then <expected result> Page 24

25. Page 25

26. BDD INSTANT WORKSHOP › What could be for you (your team, your context) the benefits of using BDD? › What do you miss to start tomorrow? lk ta Page 26

27. OUR EXPERIENCE

28. Page 28

29. Page 29

30. Page 30

31. SM ScrumMaster … ... PO TM Product Owner Development Team Sprint Review Meeting Page 31

32. REFLECTIONS › BDD is NOT a tool › Always challenge the desired behaviour › Fast feedback is essential › Communicate and collaborate › Risk-first! Page 32

33. COACHING BDD › No special secret! › Teaching and mentoring › “Ha-ha” moments need to happen for lasting effects › Grow agilists › Stimulate curiosity and enthusiasm – Throw questions and challenges Page 33

34. GAMIFYING BDD Page 34

35. USEFUL LINKS › Cucumber site – cukes.info › Liz Keogh’s blog – lizkeogh.com › Gojko Adzic web site – gojko.net Page 35

36. Page 36

BDD agile china2012_share

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