Behat & PhpSpec workshop

Transcript

1. Workshop: BDD with Behat & PhpSpec Pierre Ferré, June 23rd 2015
2. What is BDD? • It’s simply test driven development, but with a twist • Focuses on “behaviour” rather than the “how” to build software • Feels more natural • Think about the feature and describe the behaviour
3. Given, When, Then • State machine transitions • Finite State Machine • Given the system is in some state • When some event is triggered • Then we expect some outcome
4. Behat • Ported to PHP from ruby Cucumber by @everzet (Konstantin Kudryashov) • Uses Gherkin as BRDSL (Business Readable Domain Specific Language) • BRDSL is also used by cucumber • Is used to describe the behaviour of your application from the outside in
5. PhpSpec • Drives the design of your classes by describing their behaviour • It is at unit level • For example, a parser. You would drive the design of a Parser class by describing what it should do. • Not the same as testing from the outside in
6. Example Feature Scenario Feature: Authenticate users In order to allow users to access the site’s admin As a system user We need to have a mechanism to authenticate the user Scenario: Login user Given there is an entry for user “john.doe@worldstores” When I sign in as “john.doe@worldstores” Then I should be signed in
7. Let’s see some code ……..
8. Supported material “What’s in a story?” Dan North - Link The truth about BDD, Robert C. Martin - Link Cucumber - Link Gherkin - Link Behat on Github - Link PhpSpec - Link Dan North, “What’s In a Story?” - Link Behat Configuration options - Link “Classic” TDD vs “London school” TDD - Link
9. Few books • Growing object oriented software guided by tests - http://www.growing-object-oriented- software.com/ • Refactoring, by Martin Fowler - Link
10. Demo: http://github.com/pferre/bdd-demo
11. Thank you!