TEST DRIVEN DEVELOPMENTThink first, code later, php way

Schema

3 Factors1. Test2. Code3. Refactor

Result:1. Readable code2. Managed code

First Implement?

Second Implement?

Are you sure?

Source Code Tested?

How?User Stories:

As a guest, i want to go to homepage and want to see “hello World” message

Test Code<?php //cakephp way

$msg = $this->testAction(‘/’, array(‘return’ => ‘contents’));$this->assertEquals(‘hello World’, $msg);========================================================<?php //laravel way

$msg = $this->call(‘GET’, ‘/’);$this->assertEquals(‘hello World’, $msg);

Result?

remember: source code not exists yet! so it must be fail!

Implement Feature ~ CakePHP<?php //file: app/Controller/HomeController.php

class HomeController extends AppController { public function index() { $this->autoRender = false; echo ‘hello world’; }}

Implement Feature ~ Laravel<?php //file: app/routes.php

Route::get(‘/’, function() { return ‘hello world’;});

Result?

Programmer

Why?

‘hello world’ != ‘hello World’

Fix it!

Replace : ‘hello world’ with ‘hello World’

Test it!

Programmer

It’s just a simple test!

Simple doesn’t mean not to fail!

Complex? (example 1)

Complex ? (example 2)

Then?

Your boss?

the question is...

Good QualityGood Quality == Good BusinessGood Quality == More Happy CustomersGood Quality == More Happy Programmers

Happy Programmers == Readable Source CodeReadable Source Code == Good Quality

Time Management

CODE FIRST, TEST LATER == TIME LOSSTEST FIRST, CODE LATER == TIME INVESTMENT

Time Loss1. We don’t know bug2. We don’t know errors3. We don’t know fail validations!

Question: If you don’t know anything, are you sleeping or coding?

4. Test features? just open the browser!It’s 2014 now!!

Time Investment1. More fast we detect a bug, we can fix it

faster!2. More fast we know an error, we can fix it

faster!3. We control the code, not controlled by code!4. Test all features? One single hit => Enter!

Test All Features (cli)$ phpunit

Test Sub Features (cli)$ phpunit --testsuite FeatureA$ phpunit --testsuite FeatureB

ToolsPHPUnithttp://phpunit.de

PEARhttp://pear.php.net

MVC Framework Unit Test1. Controller2. Model3. View4. Library / Vendor /Package5. Helper

Forbidden Framework1. Developed not by test2. Not integrated with unit test3. Cannot test their own self!

Suggested Framework1. Laravel >= 4.12. CakePHP >= 2.4.5

Unit Test Environment1. OS: Linux Base (Ubuntu)2. PHP Error Level: error_reporting(-1) *all

Refactor

Programmer Assumptions

The real problem is not whether machines think but whether men do.

END - Happy Hunting