Role of Testing in Agile

8/6/2019 Role of Testing in Agile

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agile42 | The Agile Coaching CompanyCoaching Good Teams to Great www.agile42.com | All rights reserved. Copyright 2007 - 2011.

Which Role does Testing Play in an Agile Development

Organisation?

Olaf Lewitz, Agile Coach


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www.agile42.com | All rights reserved. Copyright 2007 - 2011.agile42 | The Agile Coaching CompanyCoaching Good Teams to Great

Agile Testing - Myths and Facts


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On the sticky notes I give you,

write 3 facts you already know

and 3 myths youve heard about Agile Testing

Write only one fact or myth per note

Don't indicate whether any particular note is a fact or a myth

Don't share them yet

Fact or Fiction?


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Ideal world


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The ideal project

We know all requirements up front

We devise the perfect design

We build everything according to specification

We pass all the tests

The client is delightedWe are cool... or not?


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Whats wrong with thispicture?


7/49www.agile42.com | All rights reserved. Copyright 2007 - 2011.agile42 | The Agile Coaching CompanyCoaching Good Teams to Great

The Client Does Not Know

The Real Problem Yet



We Need To Deliver Faster

http://www.flickr.com/photos/curns/4237949343/
http://www.flickr.com/photos/curns/4237949343/http://www.flickr.com/photos/curns/4237949343/



We Need To Master New

Technology



It Does Not Match!

http://www.flickr.com/photos/_nezemnaya_/2958522973/
http://www.flickr.com/photos/_nezemnaya_/2958522973/http://www.flickr.com/photos/_nezemnaya_/2958522973/



Why Agile?



Growing SoftwareComplexity

Software complexity in FORD vehicles

quadruplicated in 5 years

0

2.5

5

7.5

10

2005 2006 2007 2008 2009 2010

10

6

4.5

3.4

2.82.4

Software lines in FORD vehicles over the past 5 years




Software complexity in FORD vehicles

quadruplicated in 5 years

0

2.5

5

7.5

10

2005 2006 2007 2008 2009 2010

10

6

4.5

3.4

2.82.4

Software lines in FORD vehicles over the past 5 years

x4




Compared software complexity growth in

aerospace and automotive






F-22 Raptor

F-35 Joint Strike

Boeing 787 Dreamliner

S-Class Daimler 98.6

6.5

5.7

1.7






F-22 Raptor

F-35 Joint Strike

Boeing 787 Dreamliner

S-Class Daimler 98.6

6.5

5.7

1.7

x10



Time to Market

Due to globalization effects, and other

economical changes, the time to market over

time decreased significantly

1915 1939 1972 1976 1983 1994 1998 2000 2002 2004



Time to Market




Deepa Chandrasekaran, Gerard J. Tellis - Marshall School of Business, University of Southern California, Los Angeles, California

1915 1939 1972 1976 1983 1994 1998 2000 2002 2004



Time to Market




Deepa Chandrasekaran, Gerard J. Tellis - Marshall School of Business, University of Southern California, Los Angeles, California

1915 1939 1972 1976 1983 1994 1998 2000 2002 2004

13.5years

3months



Why does that matter?


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Change from this...

Defined Process, suited to produce faster


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... to this.

R&D based process


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The Lean Principles...

Eliminate Waste

Build Quality In

Create Knowledge / Amplify LearningDefer Commitment / Decide as late as possible

Deliver as fast as possible

Respect People / Empower the Team

Optimize the whole / Improve the System


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The Agile Values...

A g i l e M a n i f e s t o :

We are uncovering better ways of developing

software by doing it and helping others do it.

Through this work we have come to value:

Individuals and interactions over processes and tools

Working software over comprehensive documentation

Customer collaboration over contract negotiation

Responding to change over following a plan

That is, while there is value in the items on

the right, we value the items on the left more.


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Quality


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Quality in Service

In a service economy, quality does not mean

conformance to a script;

it means adapting to meet the changing expectations of

many different customers.Mary and Tom Poppendieck, Lean Software Development (2003)


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Quality in Design

Quality in design means

realization ofpurpose or fitness for use rather than

conformance to requirements.Mary and Tom Poppendieck, Lean Software Development (2003)


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The Myth of Independence

Testers need to be independent of the developers

Testers and developers need to be isolated

Testing needs to be done after development


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The Myth of Independence

Testers need to be independent of the developers

Testers and developers need to be isolated

Testing needs to be done after development

Why?


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Testers Stay Being Testers

Change from:

Assure Quality

to

Build Quality In

and

Build Integrity In


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Testers Stay Being Testers

Change from:

Assure Quality

to

Build Quality In

and

Build Integrity In


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Bugs Become More Expensive

The Later You Find Them

Ron Jeffries (http://xprogramming.com/)
http://xprogramming.com/index.phphttp://xprogramming.com/index.php


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Agile Roles - Where Is The Tester?

Process

Expectation

BusinessExpectation

QualityExpectation


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Scrum Process Overview - Where Is Quality?


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Q2Q1

Q3Q4

Business-facing

Technology-facing

Supporttheteam

Critiquethe

product


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Changes You Should Expect


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Roles Outside The Teams

Change from assurance to facilitation

Change from defining rules to aligning constraints

Change from assignment to delegation


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Workspace

Image fromjustaddwater.dk blog
http://justaddwater.dk/2008/03/14/where-to-find-a-giant-affordable-touch-screen/http://justaddwater.dk/2008/03/14/where-to-find-a-giant-affordable-touch-screen/


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Workspace

Enable collaboration



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Workspace


Prefer colocation



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Workspace


Prefer colocation

Establish information radiators



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Workspace


Prefer colocation


Enable team ownership

Keep it simple



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Workspace


Prefer colocation


Enable team ownership

Keep it simple

Let it evolve



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Tools

Use tools that are open, easily changed

Users (esp. the teams) need to have ownership

Do the simplest thing that could possibly work! http://www.pomodorotechnique.com/products.html
http://www.pomodorotechnique.com/products.htmlhttp://www.pomodorotechnique.com/products.html


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Conclusion

Quality is more important in Agile than in traditional methods

Its built in so it might seem less explicit at first glance


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Feedback worth your time?


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Thank you.

@OlafLewitz

[email protected]
mailto:[email protected]:[email protected]

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Role of Testing in Agile

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