Codeception is a popular framework for all kind of testing. It helps you to find a suitable level of testing and start writing tests in a pleasant and elegant way. This year a new major version of Codeception was released with new features to improve the testing experience. What stands behind this? Let's hear the story of Michael Bodnarchuk, PHP developer who started Codeception 7 years ago, and his journey to testing. What he learned by maintaining a testing framework and working as a test consultant nowadays.

2. ABOUT MEABOUT ME
Michael Bodnarchuk @davert
Lead developer of Codeception Testing Framework
Also author of CodeceptJS, Robo and others
Consultant @
Web developer from Kyiv, Ukraine
SDCLabs

3. CONFERENCE SPEAKERCONFERENCE SPEAKER

4. TESTING IN PHPTESTING IN PHP

5. UGLY PASTUGLY PAST
<div id="page">
<div id="header" role="banner">
<div id="headerimg">
<h1><a href="<?php echo home_url(); ?>/">
<?php bloginfo('name'); ?></a>
</h1>
<div class="description">
<?php bloginfo('description'); ?>
</div>
</div>
</div>
<hr />
How would we test this?

6. ELEGANT MODERNITYELEGANT MODERNITY
import React from 'react';
export default React.createClass({
render() {
return (
<div className='container'>
<Header
title={this.props.title}
link={this.props.home}>
<div className="description">
{this.props.description}
</div>
</Header>
{this.props.children}
</div>
);
}
How would we test this?

7. EVOLUTION OF PHPEVOLUTION OF PHP
PHP was a templating language
Business logic in C
MiniSQL/MySQL - storage
Commons - CMSes/Frameworks

8. UNIT TESTS?UNIT TESTS?
how?
is PHP designed for unit testing?
mocks?
is PHP designed for long run?

9. TOOL: PHPUNITTOOL: PHPUNIT
<?php
protected function setUp()
{
$this->ba = new BankAccount;
}
public function testBalanceCannotBecomeNegative()
{
try {
$this->ba->withdrawMoney(1);
}
catch (BankAccountException $e) {
$this->assertEquals(0, $this->ba->getBalance());
return;
}
$this->fail();

10. ACCEPTANCE TESTSACCEPTANCE TESTS
How to test interaction with application
How to test controllers and database
How to run this?

11. TOOL: BEHATTOOL: BEHAT
Given there is a "Sith Lord Lightsaber", which costs £5
When there is a "Sith Lord Lightsaber", which costs £10
Then there is an 'Anakin Lightsaber', which costs £10
And there is a Lightsaber, which costs £2
But there is a Lightsaber, which costs £25

12. HOW TO TEST PHPHOW TO TEST PHP
APPLICATION?APPLICATION?
when it's 2011

13. MY STORY (2011)MY STORY (2011)
Symfony1 project
2 developers
framework-level functional tests
lime testing framework
tests saved our lives
no one understood them

14. MY VISIONMY VISION
$I = new TestGuy();
$I->amOnPage('/register');
$I->fillField('login', 'davert');
$I->fillField('password', '123345');
$I->fillField('password_confirmation', '123345');
$I->click('Register');
$I->see('Hello, Davert');

15. TESTGUY 1.0TESTGUY 1.0
(original title)
symfony1 plugin
alternative to Behat+Mink

16. MY STORY (2012)MY STORY (2012)
Project failed
symfony1 stopped development
Alternative frameworks: Zend, Yii, Symfony 2
but what about tests?

17. CODECEPTION 1.0CODECEPTION 1.0
Symfony components
PHPUnit wrapper
Modules => Actors
Code Generation
Suites
Cept
Self tests?

18. MARKETINGMARKETING
Post on habr.ru
reddit.com/r/php
Comments in others post
Early adopters
Conferences

19. MY STORY (2013-2016)MY STORY (2013-2016)
Golden Age
Sponsorship by Rebilly & 2Amigos
Codeception = Full time job
Getting traction and stability

20. WHAT I LEARNEDWHAT I LEARNED
Developers do not test
Testing is not TDD or BDD
Tests should cover application internally & externally
Developers are afraid to change code to not break code
Functional tests are the most efficient

21. CODECEPTION TODAYCODECEPTION TODAY
All major frameworks supported
Custom modules (over 10)
phpunit wrapper (5.0-8.0)
Community modules/extensions

22. ELEGANT MODERNITYELEGANT MODERNITY
<?php
class Scanner
{
protected $url;
protected $httpClient;
public function __construct(HttpClient $httpClient, string $url)
{
$this->httpClient = $httpClient;
$this->urls = $url;
}
public function isInvalidUrl() : bool
{
try {
$statusCode = $this->getStatusCodeForUrl($url);
i $

23. EVOLUTION OF PHPEVOLUTION OF PHP
Business Logic in PHP
No templating
SOLID principles
Depdency Management via Composer

24. HOW WOULD WE TEST THIS?HOW WOULD WE TEST THIS?
unit tests
integration tests
functional (framework)
acceptance (webserver-browser)
=> Codeception

25. CODECEPTION 3.0CODECEPTION 3.0

26. PHPUNIT INTEGATIONPHPUNIT INTEGATION
PHPUnit 6.0-8.0
PHPUnit tests compatible
Codecoverage
Reports
Assertions

27. PHPUNIT COMPATIBILITYPHPUNIT COMPATIBILITY

28. HOA CONSOLEHOA CONSOLE
$I->pause();
Interactive REPL
[Live Demo]

29. CODE GENERATIONCODE GENERATION
Multiple Inheritance
Auto Rebuilds
Step Decorators
loggers
events
conditional assertions
tryTo
retry

30. MODULESMODULES
PhpBrowser
WebDriver
Symfony/Laravel
REST
Db

31. WHEN PHP IS NOT ENOUGH?WHEN PHP IS NOT ENOUGH?
JS Testing
Browser Testing
JSON Wire
WebDriver Protocol
Mobile Testing
native solutions
Appium

32. WHAT CAN WE DO?WHAT CAN WE DO?
==> CodeceptJS
codecept.io

33. CodeceptJS
I.amOnPage('https://bugira.app/auth');
I.fillField('Email', email);
I.click('Login');
I.wait(2);
I.fillField('Password', secret(password));
I.click('Sign in');
I.see('CodeceptJS Projects');

34. CODECEPTJS HELPERSCODECEPTJS HELPERS
webdriverio
Protractor
Puppeteer
Appium
REST

35. TAKEAWAYS!TAKEAWAYS!

36. YOUR TESTING STORYYOUR TESTING STORY
It's 2019, tests are not 👾
Test even if your code is 💩
Tests are: unit, functional, acceptance.
Don't couple specification to implementation.
Switch to JS for mobile & browser tests

37. YOUR OPENSOURCE STORYYOUR OPENSOURCE STORY
Do the work you 💓 no matter you are paid or not
Ask community leaders for promotion 👫
Write posts & articles 📖
Build community and team 🤗
Go to conferences! 🛫

38. THANK YOU!THANK YOU!
Try Codeception3 / CodeceptJS today!
codeception.com
codecept.io