TDD - Think First, Code Later, PHP Way

A unit test concept in php

Transcript

1. TEST DRIVEN DEVELOPMENT Think first, code later, php way
2. Schema
3. 3 Factors 1. Test 2. Code 3. Refactor Result: 1. Readable code 2. Managed code
4. First Implement?
5. Second Implement?
6. Are you sure?
7. Source Code Tested?
8. How? User Stories: As a guest, i want to go to homepage and want to see “hello World” message
9. 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);
10. Result? remember: source code not exists yet! so it must be fail!
11. Implement Feature ~ CakePHP <?php //file: app/Controller/HomeController.php class HomeController extends AppController { public function index() { $this->autoRender = false; echo ‘hello world’; } }
12. Implement Feature ~ Laravel <?php //file: app/routes.php Route::get(‘/’, function() { return ‘hello world’; });
13. Result?
14. Programmer
15. Why? ‘hello world’ != ‘hello World’
16. Fix it! Replace : ‘hello world’ with ‘hello World’
17. Test it!
18. Programmer
19. It’s just a simple test! Simple doesn’t mean not to fail!
20. Complex? (example 1)
21. Complex ? (example 2)
22. Then?
23. Your boss?
24. the question is...
25. Good Quality Good Quality == Good Business Good Quality == More Happy Customers Good Quality == More Happy Programmers Happy Programmers == Readable Source Code Readable Source Code == Good Quality
26. Time Management CODE FIRST, TEST LATER == TIME LOSS TEST FIRST, CODE LATER == TIME INVESTMENT
27. Time Loss 1. We don’t know bug 2. We don’t know errors 3. 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!!
28. Time Investment 1. 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!
29. Test All Features (cli) $ phpunit
30. Test Sub Features (cli) $ phpunit --testsuite FeatureA $ phpunit --testsuite FeatureB
31. Tools PHPUnit http://phpunit.de PEAR http://pear.php.net
32. MVC Framework Unit Test 1. Controller 2. Model 3. View 4. Library / Vendor /Package 5. Helper
33. Forbidden Framework 1. Developed not by test 2. Not integrated with unit test 3. Cannot test their own self!
34. Suggested Framework 1. Laravel >= 4.1 2. CakePHP >= 2.4.5
35. Unit Test Environment 1. OS: Linux Base (Ubuntu) 2. PHP Error Level: error_reporting(-1) *all
36. Refactor
37. Programmer Assumptions The real problem is not whether machines think but whether men do.
38. END - Happy Hunting