How to unit test with PHPUnit + Ubuntu 14.04 + WordPress – Part 1

The below is pretty much directly from the online manuals for PHPUnit and WordPress but copied here for my personal usage.

Install PHPUnit

  1. Download:
    wget https://phar.phpunit.de/phpunit.phar
  2. Make executable:
    chmod +x phpunit.phar
  3. Move globally:
    sudo mv phpunit.phar /usr/local/bin/phpunit
  4. Test
    phpunit --version

Optionally, if you want to verify the signature, between steps #1 and #2:

  1. Download signature file
    wget https://phar.phpunit.de/phpunit.phar.asc
  2. Add the public key to our local file:
    gpg --keyserver pgp.uni-mainz.de --recv-keys 0x4AA394086372C20A
  3. Verify:
    gpg phpunit.phar.asc

Install WordPress

  1. Get a local copy of WordPress
    cd ~/
    svn co http://develop.svn.wordpress.org/trunk/ wordpress-develop
    cd wordpress-develop/
  2. Create a MySql database (replace DATABASE_NAME_HERE, USERNAME_HERE and PASSWORD_HERE)
    mysql -uroot -p -e "CREATE DATABASE DATABASE_NAME_HERE; GRANT ALL PRIVILEGES ON DATABASE_NAME_HERE.* TO USERNAME_HERE@localhost IDENTIFIED BY 'PASSWORD_HERE';FLUSH PRIVILEGES;"
  3. Copy the test config file
    cp wp-tests-config-sample.php wp-tests-config.php
  4. Modify the variables DB_NAME, DB_USER and DB_PASSWORD in wp-tests-config.php REMEMBER!!!This database gets erased every time a unit test is run so DO NOT POINT IT AT A PRODUCTION DATABASE
    vi wp-tests-config.php.
  5. Sanity check by running the official test suite:
    phpunit

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