BDD + PHP = Behat Behavior Driven Development (BDD) is a technique for testing and developing software using an agile approach. Behat is a BDD testing tool for PHP that allows writing tests in a natural language format called features. Behat tests in PHP look like scenarios written in plain English with structured keywords.

1. BDD + PHP = Behat
Łukasz Kużyński – wookieb
@wookiebpl
http://wookieb.pl

2. What is BDD
● BDD = Behavior Driven Development
● technique for testing and develop software
● agile software development technique
● variant of TDD
● bridge between programmer and client

3. What is BDD
Is a state of mind *
* http://blog.robustsoftware.co.uk/2009/11/what-is-bdd-behaviour-driven-design.html

4. BDD in PHP

5. How Behat's tests looks like

6. Behat scenario schema

7. Behat scenario - example

8. Behat - FeatureContext

9. Behat – First run (with our code)

10. Same scenario with new values

11. Scenario Outline

12. Feature Background
Executed before each scenario

13. Hooks

14. Mooore hooks
BeforeSuite BeforeFeature BeforeaScenario BeforeStep
AfterSuite AfterFeature AfterScenario AfterStep

15. Given, When, Then
● No special meaning in code
● Just a possibility to mark steps
● Increase readability of FeatureContext

16. Extend FeatureContext
Substitute for „horizontal inheritance”

17. Useful contexts
https://github.com/Behat/CommonContexts

18. Pitfalls
Feature should be written for humans,
not programmers
http://elabs.se/blog/15-you-re-cuking-it-wrong

19. Can i write „unit tests” in BDD?
It is possible but ...
inefficient

20. Does BDD is a replacement
for my standard tests
Questions?

21. Łukasz Kużyński – wookieb
@wookiebpl
http://wookieb.pl