TEST

TEST
presented by eddie
2009.1.15

Agenda

Agenda
• Something about Test

Agenda
• Something about Test
what? why? why not and how to....

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!
Test tools introduction, installation and real
coding practice.

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!
Test tools introduction, installation and real
coding practice.
Unit test, Integration test and Acceptance test.

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!
Test tools introduction, installation and real
coding practice.
Unit test, Integration test and Acceptance test.
• Test in PHP Frameworks

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!
Test tools introduction, installation and real
coding practice.
Unit test, Integration test and Acceptance test.
• Test in PHP Frameworks
Zend Framework(still working...)

Agenda
• Something about Test
what? why? why not and how to....
• Test in action!
Test tools introduction, installation and real
coding practice.
Unit test, Integration test and Acceptance test.
• Test in PHP Frameworks
Zend Framework(still working...)
CakePHP(still working...)

What’s Test?

Test != Debug

Why Test?

Every Programmers
Makes Mistakes!!

Why Not Test?

Why not Test?

Why not Test?
• No Time!

Why not Test?
• No Time!
• Boring!

Why not Test?
• No Time!
• Boring!
• Hey! I’m an experienced programmer!

Advantages

Advantages
• The sooner you test for a mistake, the
greater your chance of finding it and the
less it will cost to find and fix.

Advantages
• The sooner you test for a mistake, the
greater your chance of finding it and the
less it will cost to find and fix.
• Good software quality.

Advantages
• The sooner you test for a mistake, the
greater your chance of finding it and the
less it will cost to find and fix.
• Good software quality.
• More confidence in your product(code)!

Then....
What’s the problem?

Unit Test

Unit Test
• Verify the individual units of source code are
working properly.

Unit Test
• Verify the individual units of source code are
working properly.
• A unit is the smallest testable part of an
application.

Unit Test
• Verify the individual units of source code are
working properly.
• A unit is the smallest testable part of an
application.
• May belong to a base/super class, abstract
class or derived/child class.

Integration Test

Integration Test
• Verify high level components of the
application work as expected.

Integration Test
• Verify high level components of the
application work as expected.
• Use mocks, stubs and specialised test classes.

Acceptance Test

Acceptance Test
• Aka “Functional Test”

Acceptance Test
• Aka “Functional Test”
• Ensures that an application behaves as
expected by the client.

Tools

Test Tools

Test Tools
• PHPUnit(Modelled after JUnit)

Test Tools
• PHPUnit(Modelled after JUnit)
• Selenium Remote-Control

PHPUnit

PHPUnit
• Requirements

PHPUnit
• Requirements
• PHP 5.1.4 (or greater) is required, PHP 5.2 is
recommended. PHPUnit 4 will require PHP 5.3.

PHPUnit
• Requirements
• PHP 5.1.4 (or greater) is required, PHP 5.2 is
recommended. PHPUnit 4 will require PHP 5.3.
• more information:
http://www.phpunit.de/wiki/Requirements

How to Test?

How to Test?
• Setup

How to Test?
• Setup
• Execute

How to Test?
• Setup
• Execute
• Verify

How to Test?
• Setup
• Execute
• Verify
• Teardown

PHPUnit Install

PHPUnit Install
• Install from PEAR or manual installation.

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:
1. download source

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:
1. download source
2. extract and put library in include_path

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:
1. download source
2. extract and put library in include_path
3. minor modifications:

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:
1. download source
2. extract and put library in include_path
3. minor modifications:
CLI : phpunit

PHPUnit Install
• Install from PEAR or manual installation.
• Manual installation:
1. download source
2. extract and put library in include_path
3. minor modifications:
CLI : phpunit
utils/fileloader.php

Conventions

Conventions
• Function test*() without arguments
ex: testArray(), testmyfunction()

Conventions
• Function test*() without arguments
ex: testArray(), testmyfunction()
• Define in docblock:
ex: @test

Conventions
• Function test*() without arguments
ex: testArray(), testmyfunction()
• Define in docblock:
ex: @test
• Test functions have to be PUBLIC

Remember!!

Remember!!
Comments(docblock) are MEANINGFUL !

Assert Method

Assert Method
They are methods for automatically checking
values and reporting discrepancies.

Test Skeleton
Generator

Test Skeleton
Generator
• Generate a test class file from classes.

Test Skeleton
Generator
• Generate a test class file from classes.
• Usage:
phpunit --skeleton-test testname(.php)

And....vise versa

And....vise versa
• Generate a class skeleton from test case
classes.

And....vise versa
• Generate a class skeleton from test case
classes.
• Usage:
phpunit --skeleton-class classname(.php)

And....vise versa
• Generate a class skeleton from test case
classes.
• Usage:
phpunit --skeleton-class classname(.php)
• Test-Driven Developement.

Test Case Extensions

Test Case Extensions
• Tests for Output

Test Case Extensions
• Tests for Output
• Tests for Performance

Test Case Extensions
• Tests for Output
• Tests for Performance
• Tests for Database

Not finish yet...

Not finish yet...
• Incompleted Tests

Not finish yet...
• Incompleted Tests
• Skip Tests

Unit Test

Unit Test

Unit Test
<?php
require_once 'PHPUnit/Framework.php';
require_once 'testcal.php';
class testcalTest extends PHPUnit_Framework_TestCase
{
protected $object;
protected function setUp()
{
$this->object = new testcal;
}
public function testAdd()
{
$this->assertEquals(2, $this->object->add(1, 1));
}
}

Easy Way...

Easy Way...
<?php
class Calculator
{
/**
* @assert (0,0) == 0
* @assert (0,1) == 1
* @assert (1,0) == 1
* @assert (1,1) == 2
* @assert (1,2) != 3
*/
public function add($a, $b)
{
return $a + $b;
}
}

Compose your Tests

Compose your Tests
• Test Function(phpunit --filter testFunc)

Compose your Tests
• Test Function(phpunit --filter testFunc)
• Test Case

Compose your Tests
• Test Function(phpunit --filter testFunc)
• Test Case
• Test Suite(setUp(), tearDown())

Integration Test

Test Double

Test Double
• When some other components cannot be used in
the test environment...

Test Double
• When some other components cannot be used in
the test environment...
• The Test Double doesn't have to behave exactly
like the real components; it merely has to provide
the same API as the real one so that just let the
test procedure thinks it is the real one!

Acceptance Test

Selenium RC

Selenium RC
• Selenium Remote-Control(RC) is a test
tool that allows you to write automated
user-interface tests for web applications in
any programming language against any
HTTP website using any mainstream
browser.

Selenium RC
• Selenium Remote-Control(RC) is a test
tool that allows you to write automated
user-interface tests for web applications in
any programming language against any
HTTP website using any mainstream
browser.
• More infomation:
http://seleniumhq.org

How it works?

How it works?

More details....

More details....

Code Coverage

Code Coverage
• phpunit --coverage-html <reportDIR>
testClass(.php)

Code Coverage
• phpunit --coverage-html <reportDIR>
testClass(.php)
• xdebug is required

Test-Driven
Development

Test-Driven
Development
• Test before coding.

Test-Driven
Development
• Test before coding.
• Well-designed architecture and APIs.

Test for
PHP Frameworks

Test for
Zend Framework

Test for
Zend Framework
• Application Login TestCase Example.
• Test Case:
The login page should contain one login form
and be displayed to non-authenticated users.
When a user logs in, they should be redirected
to their profile page, and that profile page
should show relevant information.

Test for
CakePHP

Test for
CakePHP
• To be Continued...

References

References
• Manual:
• PHPUnit Manual V3.3
• Articles:
• PHPUnit:
• An Introduction to the Art of Unit Testing in PHP
• Check your PHP code at every level with unit tests
• Acceptance Testing of Web Applications with PHP
• Zend Framework:
• Zend_Test_PHPUnit

Debugging Sucks,
Testing Rocks!

Thank you :)