Rob coaches teams to be prepared to use the BDD cycle and the TDD cycle when appropriate, and to be willing to move fluidly between these two intertwined cycles on a daily basis. Rob has witnessed significantly-improved levels of communication, alignment, quality, and enthusiasm on teams, and just in mere days, when BDD is embraced as the central activity of the whole team.

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Making Agile a Reality®
agileforall.com
How/When to do
TDD & BDD Together
Rob Myers
21 February 2018

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 1986 – First software development internship.
 1998 – First Agile/TDD team (a.k.a. eXtreme Programming).
 2002 – Taught my first TDD course.
 2018(?!) – My first (& likely only) book will be published.

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TDD

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• Teams noted a 15–35% increase in initial development
time.
• Defect rates decreased between 40% & 90%.
http://research.microsoft.com/en-us/projects/esm/nagappan_tdd.pdf, Nagappan et al, © Springer Science +
Business Media, LLC 2008
The Nagappan Study: IBM & Microsoft

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Portland Japanese Rock Garden © Rob Myers

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Kamakura Buddha through the Trees © Rob Myers

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Refactoring TDD
Continuous
Integration
Pairing

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Given Lisa’s wishlist contains “Brothers Karamazov”
And “Brothers Karamazov” is a bookclub alternative
When Lisa views her bookclub options
Then a Star symbol appears next to “Brothers Karamazov”

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Given “The Bell Jar” is a bookclub alternative
And Lisa has already purchased “The Bell Jar”
When Lisa views her bookclub options
Then a Stop symbol appears next to “The Bell Jar”

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TDD
Exploratory
Behavior Driven Development

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• Combinatorials.
• Unsurfaced or non-obvious helpful domain objects. e.g.,
“Needs” and “Wants” story.
• Can’t quickly take the scenario from red to green.
• Jetlagged Intern Principle.
• Avoid cluttering product specification.

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Stay connected
Method Rob’s contact information
e-mail Rob.Myers@agileforall.com
Twitter @agilecoach
LinkedIn https://www.linkedin.com/in/RobMyersAgileCoach/
blog http://agileforall.com/author/rmyers/

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Subu Sankara
subu@synerzip.com
+1. 510-579-9673

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