Slides of my talk about how to start using TDD and how TDD works. For achieve that the PHPunit Framework was used to demostrate simple examples. The problem chose was how to create a codebar from 44 characteres to 48, in Brazil this is a common task among developers who work with the financial market. You can find more information about that in my personal website http://marabesi.com/thoughts/not-using-tdd-part-1/

1. ARE YOU NOT USING TDD ?!
while ( TDD === false ) {
bugs ++;
}

4. T.D.D ?

5. TEST
DRIVEN
DEVELOPMENT

8. TEST FIRST

9. MAKE IT PASS AS SIMPLE AS POSSIBLE

10. REFACTOR

11. The web service offered by the government
returns the value of the barcode with 44
characters.
A barcode with 48 characters
Our goal
What we have

18. BRING IT ON !
What if we change the code bar to a
new one ?
What if we provide a code bar with
less than 44 characters ?