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Testing PHP with PerlChris Shiflett

shiflett@php.net

Geoffrey Young

geoff@modperlcookbook.org

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PHP and Perl?

• Testing a basic PHP application

• Using the Apache-Test framework

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The Code

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admin/add.php

<?php

include '../functions.inc';

 

...

if (add_user($_POST['username'], $_POST['password']))

{

  echo '<p>User Added</p>';

  echo '<p><a href="/admin/">Admin Home</a></p>';

}?>

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The Testing Paradigm

• dopted from the time!tested Perlmythology "sic#

• plan() the number of tests

• call ok() for each test you plan

– or is()$ or like()$ or unlike()$ etc%%%

• &ramework keeps track of the resultsand writes out the report

• Test nything Protocol "TP#

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The Test

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add_user.php

<?phprequire 'test-more.php';

require "{$_SERVER['DOCUMENT_ROOT']}/functions.inc";

 

plan(2);

 

{  # no user or password

  $rc = add_user('', '');

  ok (!$rc, 'no user/pass fails');

}

{

  # some generic user/password  $rc = add_user('user', 'password');

  ok ($rc, 'user/pass successfully added');

 

# cleanup

  delete_user('user');

}?>

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test-more.php

• utomagically generated

• 'nterface into Apache-Test

•

Pro(ides simple$ intuiti(e functions–ok()

–is()

–like()

• Takes care of bookkeeping

–plan()

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ok()

• Used for boolean comparisons

ok($foo == $bar, '$foo equals $bar');

• Gi(es some diagnostic output on failurenot ok 1 - no user/pass fails

# Failed test (add_user.php at line 10)

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Goodness

• )o tests in application code

• Simple interface

•

*epeatable– tests are self!contained

• )o Perl in(ol(ed

– Chris particularly likes this aspect

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Testing 'deology

• good testing en(ironment shouldpro(ide

– tools to make writing tests simple

– a self!contained and pristine en(ironment

– test automation

• +asically do e(erything for you e,ceptwrite your tests

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+ehold the Power of Perl

• How did we do it?

• Apache-Test

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Apache-Test

• &ramework for testing pache!basedapplication components

• Part of the httpd-test S& pro-ect

• Pro(ides tools to make testing pachesimple

•

.ritten in Perl

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pache &oo

• pache needs a basic configuration toser(ice re/uests– ServerRoot

– DocumentRoot– ErrorLog

– Listen

•

Apache-Test 0intuits0 these andcreates its own httpd.conf

• Uses an httpd binary you specify

–

patience$ young grasshopper

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Cross Pollination

• Apache-Test pro(ides a defaultphp.ini

– php.ini-recommended

• lso pro(ides test-more.php

<?php require 'test-more.php'; ?>

– modified include_path

• &ertile soil so your PHP can grow

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ltering the 1efaults

• httpd.conf and php.ini areautogenerated

– don2t touch them

• Supplement default httpd.conf and php.ini with custom configurations

•

Create t/conf/extra.conf.in

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extra.conf.in

• Same directi(es as httpd.conf

• Pulled into httpd.conf (ia Include

•

llow for some fancy (ariablesubstitutions

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extra.conf.in

AddType application/x-httpd-php .php

DirectoryIndex index.php index.html

<IfModule @PHP_MODULE@>

  php_flag register_globals On

</IfModule>

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extra.conf

AddType application/x-httpd-php .php

DirectoryIndex index.php index.html

<IfModule mod_php5.c>

  php_flag register_globals On

</IfModule>

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So &ar%%%

• .e ha(e

– PHP test script "add_user.php#

– test library "test-more.php#

– httpd.conf

– php.ini

– local o(errides

•.e still need– a client to call the PHP script

– a running ser(er

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The Gory 1etails

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The Gory 1etails

• Create PHP scripts ast/response/TestFunc/add_user.php

• Apache-Test will automagically createa client script that calls add_user.php

t/func/add_user.t

•

make test will– run add_user.t

– which will re/uest add_user.php

–

which will send data to Apache-Test

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Makefile.PL

• .e still need to create the Makefile

– so make test works

•

.e also need to choose an pacheinstallation

• Taken care of in one single step

perl Makefile.PL -httpd /path/to/httpd

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Cool3

• The glory will sink in tomorrow

– we hope

• PHP de(elopment will ne(er be thesame

• See what happens when a Perl guy anda PHP guy start drinking?

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Code

• ll the code from this presentation canbe found here

http://www.modperlcookbook.org/~geoff/slides/ApacheCon/2004/perl-php-test.tar.gz

• +e sure to read the *4154 and')ST66 docs

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+rought To You +y%%%

http://shiflett.org/

http://modperlcookbook.org/~geoff/