Home Accessibility Courses Twitter The Mouth Facebook Resources Site Map About Us Contact
For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Testing classes for your PHP website with PHPUnit

When you visit a web site and run an application, you want it to just work for you, no matter how complex the stuff in the background might be. If, for example, you want to book a room at Well House Manor then you want a few easy data entries to do everything for you - and you don't really want to be worried or concerned about the background stuff - the way the server creates and uses objects, accesses databases and backroom servers, and ensures that the price is right, the room reserved and not double booked, that confirmation emails have been sent, and that your checkin form will be avaiable at reception.

If you're the developer or maintainer of that web site, however, you want to be able to test and upgrade it in segments. It's not much good if the developer makes a change and finds that the booking system breaks if he's then left struggling through the various elements of code trying to find the cause of the breaks. Much better to break the code into sections and test each section individually.

Test Driven Development (TDD) is a methodology under which you define how your code will work, and how you will test it, from the start. You'll rerun the tests time and time again, and as you write your code you can build up testing each level as you go, and so quickly and efficiently locating any problems.

If you're using PHP, the phpunit package lets you load in an included file (typically containing classes) and then test that code, exercising the methods and objects in the class and asserting the conditions that are expected to exist after each test is run. Within you test class (which extends PHPUnit_Framework_TestCase) you provide a setUp function which prepares each test, and whole series of functions called testXXX where XXX is any name you choose, and you let the PHPUnit program run each of the tests and corralate the results.

Here is a set of test results ... from tests that run correctly:

  [root@pal phpu]# phpunit fivea.php
  PHPUnit 3.5.15 by Sebastian Bergmann.
  Time: 0 seconds, Memory: 5.75Mb
  OK (3 tests, 4 assertions)
  [root@pal phpu]#

And the same program, run with an introduced error (wanted "Bobby" and got "Bob" from a call to getname) in the second of three tests:

&bsp; [root@pal phpu]# phpunit fivea.php
  PHPUnit 3.5.15 by Sebastian Bergmann.
  Time: 1 second, Memory: 6.00Mb
  There was 1 failure:
  1) MyTest::testSomething
  Failed asserting that two strings are equal.
  --- Expected
  +++ Actual
  @@ @@
  Tests: 3, Assertions: 3, Failures: 1.
  [root@pal phpu]#

To see more - the source of the code we're testing is [here] and the test class is [here]

(written 2012-12-20, updated 2012-12-22)

Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
H311 - Testing your PHP
  [3426] Automed web site testing scripted in Ruby using watir-webdriver - (2011-09-09)
  [3623] Some TestWise examples - helping use Ruby code to check your web site operation - (2012-02-24)
  [3959] Testing code coverage (have I tested everything?) in PHP - (2012-12-21)
  [4652] Testing new algorithms in PHP - (2016-02-20)

Back to
The week before Christmas
Previous and next
Horse's mouth home
Forward to
Testing code coverage (have I tested everything?) in PHP
Some other Articles
Melksham welcomes visitors - new blue plaque trail and more
Well House Staff Party
Picture - between Lacock and Melksham
Testing classes for your PHP website with PHPUnit
The week before Christmas
Zend / layout of MVC and other files in an example application (PHP)
Building up from a small PHP setup to an enterprise one
Lesson 1 in programing - write clean, reuseable and maintainable tidy code
Objects in PHP - Revision
4759 posts, page by page
Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per page

This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

Link to Ezine home page (for reading).
Link to Blogging home page (to add comments).

You can Add a comment or ranking to this page

© WELL HOUSE CONSULTANTS LTD., 2024: 48 Spa Road • Melksham, Wiltshire • United Kingdom • SN12 7NY
PH: 01144 1225 708225 • EMAIL: info@wellho.net • WEB: http://www.wellho.net • SKYPE: wellho

PAGE: http://www.wellho.net/mouth/3958_Tes ... PUnit.html • PAGE BUILT: Sun Oct 11 16:07:41 2020 • BUILD SYSTEM: JelliaJamb