Who am i

@alvarobiz - #introTDD

• I craft software
• Currently, one big client
  • and some small ones
• I tweet at @alvarobiz
• I blog at alvarogarcia7.github.io
• Came here to learn from you

This is me crafting

@alvarobiz - #introTDD

More like...

@alvarobiz - #introTDD

Who am i (II)

@alvarobiz - #introTDD

• Invited to organize:
  • Software Craftsmanship Barcelona meetup
  • Software Craftsmanship Barcelona 2014
  • Dev Practices & Craftsmanship Track at the CAS 2014

What is this tdd thing

@alvarobiz - #introTDD

?

Wasn't tdd dead?

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Wait what??

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well maybe not...

@alvarobiz - #introTDD

• The right tool for the right job
• It works for others and for me
• is there some interest?
  • that's why you came :)

a tdd cycle

@alvarobiz - #introTDD

Have you understood?

let me implement that

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Refactor

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@alvarobiz - #introTDD

Have you understood?

What it really is about

@alvarobiz - #introTDD

• Clean code that works (Ron Jeffries)
• Predictable way to develop

some benefits

@alvarobiz - #introTDD

• {Learn from / Listen to} your tests (GOOS)
• Reduce speculative development
• Increase confidence in team
•  

More in depth

@alvarobiz - #introTDD

Compare that to test last

@alvarobiz - #introTDD

@alvarobiz - #introTDD

Compare that to test last (II)

TDD to explain tdd

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Thanks to Stanley Milgram for the social experiment :)

Show me the code

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Specifications

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As a meetup organizer, 

I want a list

That can store strings

So I can store the attendants' names

(Java) API

@alvarobiz - #introTDD

• Constructor: new MyStringList()
• Methods:
  • void add(String)
  • boolean isEmpty()
  • boolean contains(String)

(please don't use any java.util.* collection :) )

Final code

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here:

That's all folks

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Questions?

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Feedback ?

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Raise your hands when:

Thanks

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tweet about it: @alvarobiz :)

Mocks, stubs, fakes

 AND OTHER TEST DOUBES

@alvarobiz - #introTDD

Mock

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STUB

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FAKE

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DUMMY

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SPY

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That's all folks

@alvarobiz - #introTDD

@alvarobiz - #introTDD

NOW IT IS YOUR TURN

@alvarobiz - #introTDD

NOW IT IS   MY TURN