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.

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 <?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?

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 :)

Test

by Eddie Kao on Jan 15, 2009

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