Rewrite Rule Testing

This plugin provides a simple interface for testing your custom rewrite rules.

The purpose of this plugin is to be able to test your own rewrite rules, so
you’re probably most interested in knowing how to do that, right? The plugin
provides a filter, rewrite_testing_tests to add your own tests. That filter
passes an associative array of name => tests. The tests array is an associative
array of URI => expected match. In the outer array, the “name” is arbitrary and
for your own reference. In the inner array, the “URI” is the path you want to
test, and the “expected match” is what WordPress should find as a rewrite
match.

Enough chit-chat, here’s an example:

function my_rewrite_tests( $tests ) {
  return array(
    'Events' => array(
      '/event/super-bowl/' => 'index.php?event=$matches[1]',
      '/event/super-bowl/page/2/' => 'index.php?event=$matches[1]&paged=$matches[2]'
    )
  );
}
add_filter( 'rewrite_testing_tests', 'my_rewrite_tests' );

You can see the test_cases() method for a full suite of tests for the “Day
and Name” permalink structure. It’s not necessary to leave these in (in fact,
the above demo would wipe them out), unless you want to make sure that your
custom rewrites aren’t affecting core rewrites. If you aren’t using “Day and
Name” permalinks, you’ll need to adjust the tests to fit your permalink
structure.

Todo

• Add a debug bar extension which reads a transient; the transient would be
  updated whenever rewrite rules are flushed. The debug bar extension would
  show pass/fail status and link directly to the settings page.
• Add tests for other permalink structures?
• Add a way to run this as part of phpunit