Back to basics - PHPUnit

Back to basics Sebastian Marek

What is a unit test?In computer programming, unit testing is a method bywhich individual units of source code are tested todetermine if they are fit for use. A unit is the smallesttestable part of an application. http://en.wikipedia.org/wiki/Unit_testing

For whom?Unit tests are typically written and run by softwaredevelopers to ensure that code meets its design andbehaves as intended. http://en.wikipedia.org/wiki/Unit_testing

What for?The goal of unit testing is to isolate each part of theprogram and show that the individual parts are correct. Aunit test provides a strict, written contract that the pieceof code must satisfy. As a result, it affords severalbenefits. Unit tests find problems early in thedevelopment cycle. http://en.wikipedia.org/wiki/Unit_testing

Benefits● Facilitates change● Simplifies integration● Living documentation● Early design

Installing PHPUnit#> pear channel-discover pear.phpunit.de#> pear channel-discover components.ez.no#> pear channel-discover pear.symfony-project.com#> pear install phpunit/PHPUnit#> phpunit –versionPHPUnit 3.5.11 by Sebastian Bergmann.

Managing tests

Writing tests● assertions● testing exceptions● data providers● test dependencies● test fixtures● stubs● mock objects

Logging results● verbose mode● testdox format● test results● code coverage results

PHPUnit configuration file● bootstrap file● process isolation● including and excluding files for code coverage● logging

Resources● http://www.phpunit.de/manual/current/en/index.html

Back to basics - PHPUnit

by Sebastian Marek on Apr 08, 2011

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