Codeception 1.0.4 Released. Behavior Driven Development.

Published on February 21, 2012

This release brings a real behavior driven development to Codeception. Before that we talked about testing in BDD-style, but nothing about real development by behavior. There were just few changes made in code. More changes are coming to documentation.

Specifications

With Behavior Driven Development you start development of class by writing it’s specifications. Specifications are written as methods of Cest class and start with ‘should’ word.

<?php

class EventMachineCest {

$class = 'EventMachine';

function shouldHaveInitialState() {}
function shouldMoveBetweenTransitions() {}
function shouldMoveBetweenTransitionsOnCondition() {}
}
?>

The EventMachine class in example above is not written, but we’ve already defined what to expect from it. After a basic requirements are specified we can take a deeper look into it and describe how it should be used. From this point your specifications become a valid Codeception tests.

<?php
class EventMachineCest {

$class = 'EventMachine';

/**
* @doc getState
*/

function shouldHaveInitialState(CodeGuy $I)
{
$em = new EventMachine;
$I->executeMethod($em, 'getState')
->seeResultEquals('initial');
}
}
?>

For full EventMachineCest example see my Gist on Github.

Codeception generates a pretty good documentation with DocBlox based on your scenario. The @doc annotation marks that a getState method documentation will be updated by current test scenario.

I want to have initial state

I execute method $eventMachine, 'getState'
I see result equals 'initial'

Scenarios

For making acceptnace tests usable for writing Stories we’ve added 2 new methods. It’s am and lookForwardTo which represent ‘As a …’ and ‘So that’ definitions from Story.

<?php
$I = new WebGuy();
$I->am('regular site user'); // As a regular user
$I->wantTo('create my blog page'); // I want to create my blog page
$I->lookForwardTo('get a cool blog here'); // So that I get a cool blog

$I->expect("blog can't be created twice");
$I->expect("blog has RSS feed");
$I->expect("am administrator of this blog");
?>

After that Cept can be extended in a valid Cept file. Refer to this Gist demonstrates for example.

Bugfixes

  • seeLink and dontSeeLink for acceptance tests were fixed. Thanks to Kanstantsin Kamkou.
  • comments are displayed in output as well as actions.
  • Selenium docs updated.

Please update your version via PEAR:

$ pear install codeception/Codeception

or download updated Phar package.