Global Catastrophe

• WordPress makes extensive use of global variables
• PHPUnit kills global variables
• Here's what ensues:

  Call to a member function add_rule() on a non-object in wp-includes/rewrite.php

  Call to a member function add_rewrite_tag() on a non-object in wp-includes/taxonomy.php

  Undefined variable: wpdb in wp-includes/ms-settings.php

  Trying to get property of non-object in wp-includes/functions.php

  Undefined index: HTTP_HOST in wp-includes/ms-settings.php