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Testing code coverage (have I tested everything?) in PHP

When you write a series of tests for your code and they all pass, have you tested everything? Not Necessarily - you only know that you have passed all the tests that you set, and not that the test set could be considered to be complete.

PHPUnit - the unit test suite for PHP - includes a coverage option which will let you check whether each class and method of the code that you're testing has been run as a part of the tests, and will tell you how many times each statement has been executed during testing. Simply run the phpunit command with the appropriate option:
  phpunit --coverage-html /var/www/html/cover five.php

As the results are extensive, they don't come as a single file but rather as a complete web folder, and in my command I've redirected that to a directory that's within my web document root so that I can browse to it:

phpunit - method call coverage


And I can also explore the source code and the number of times each conditional group of statements / loop has been run:

phpunit - code coverage example


For details of writing the tests for PHPunit, see previous article [here].
(written 2012-12-21, updated 2012-12-22)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
H311 - Testing your PHP
  [4652] Testing new algorithms in PHP - (2016-02-20)
  [3958] Testing classes for your PHP website with PHPUnit - (2012-12-20)
  [3623] Some TestWise examples - helping use Ruby code to check your web site operation - (2012-02-24)
  [3426] Automed web site testing scripted in Ruby using watir-webdriver - (2011-09-09)


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