Oleg Butuzov

Debug Bar Rewrite Rules adds information about Rewrite Rules (changed via filters) to a new panel in the Debug Bar. This plugin is an extension for <a href="https://wordpress.org/extend/plugins/debug-bar/" rel="ugc">Debug Bar</a>, but it is also can work in standalone mode (as admin tools page). Note: this plugin not able to track <code>add_rewrite_rule</code> function calls, for a reason this function is untraceable.
Once installed, you will have access to the following information:
<ul>
<li>Number of existing rewrite rules</li>
<li>List of rewrite rules</li>
<li>List of available filter hooks that can affect rewrite rules.</li>
<li>List of filters that affects rewrite rules.</li>
<li>Ability to search in rules with highlighting matches.</li>
<li>Ability to test url and see what rules can be applied to it.</li>
<li>Ability to flush rules directly from debug bar panel/tools page.</li>
</ul>

Debug Bar Rewrite Rules

This plugin makes it so easy to debug and even discover WP rewrite rules. Thanks a lot!!

Amazing plugin!

Debug Bar Rewrite Rules adds a new panel to Debug Bar that displays information about WordPress Rewrites Rules (if used).

Alley

Matthew Boynes

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, <code>rewrite_testing_tests</code> 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:
<pre><code>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' );
</code></pre>
You can see the <code>test_cases()</code> 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.
<h3>Todo</h3>
<ul>
<li>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.</li>
<li>Add tests for other permalink structures?</li>
<li>Add a way to run this as part of phpunit</li>
</ul>

Rewrite Rule Testing

Regex and WordPress rewrite rules are probably my two Least Favourite Things, so this plugin is essential for making sure I haven't messed anything up :)



Nice

Unit test your rewrite rules from the WordPress Admin.

Debug Bar Rewrite Rules vs Rewrite Rule Testing