An introduction talk to unit testing concept and PHPUnit

1. Back to basics
Sebastian Marek

2. What is a unit test?
In computer programming, unit testing is a method by
which individual units of source code are tested to
determine if they are fit for use. A unit is the smallest
testable part of an application.
http://en.wikipedia.org/wiki/Unit_testing

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

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

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

6. 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 –version
PHPUnit 3.5.11 by Sebastian Bergmann.

7. Managing tests

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

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

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

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

12. Q&A
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