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<title>[29251] trunk/tests/phpunit/includes/testcase.php: Backup filter globals ( `$merged_filters, $wp_actions, $wp_current_filter, $wp_filter` ) statically when running unit tests, restore on `tearDown()`.</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/29251">29251</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-07-19 23:58:07 +0000 (Sat, 19 Jul 2014)</dd>
</dl>
<h3>Log Message</h3>
<pre>Backup filter globals ( `$merged_filters, $wp_actions, $wp_current_filter, $wp_filter` ) statically when running unit tests, restore on `tearDown()`. This ensures that all tests initially use the same filters/actions.
Props mnelson4, wonderboymusic.
Fixes <a href="http://core.trac.wordpress.org/ticket/28535">#28535</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunktestsphpunitincludestestcasephp">trunk/tests/phpunit/includes/testcase.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunktestsphpunitincludestestcasephp"></a>
<div class="modfile"><h4>Modified: trunk/tests/phpunit/includes/testcase.php (29250 => 29251)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/tests/phpunit/includes/testcase.php 2014-07-19 23:13:19 UTC (rev 29250)
+++ trunk/tests/phpunit/includes/testcase.php 2014-07-19 23:58:07 UTC (rev 29251)
</span><span class="lines">@@ -11,6 +11,7 @@
</span><span class="cx"> protected $expected_doing_it_wrong = array();
</span><span class="cx"> protected $caught_doing_it_wrong = array();
</span><span class="cx">
</span><ins>+ protected static $hooks_saved = array();
</ins><span class="cx"> protected static $ignore_files;
</span><span class="cx">
</span><span class="cx"> /**
</span><span class="lines">@@ -25,6 +26,10 @@
</span><span class="cx"> self::$ignore_files = $this->scan_user_uploads();
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ if ( ! self::$hooks_saved ) {
+ $this->_backup_hooks();
+ }
+
</ins><span class="cx"> global $wpdb;
</span><span class="cx"> $wpdb->suppress_errors = false;
</span><span class="cx"> $wpdb->show_errors = true;
</span><span class="lines">@@ -52,6 +57,7 @@
</span><span class="cx"> remove_filter( 'query', array( $this, '_create_temporary_tables' ) );
</span><span class="cx"> remove_filter( 'query', array( $this, '_drop_temporary_tables' ) );
</span><span class="cx"> remove_filter( 'wp_die_handler', array( $this, 'get_wp_die_handler' ) );
</span><ins>+ $this->_restore_hooks();
</ins><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> function clean_up_global_scope() {
</span><span class="lines">@@ -60,6 +66,42 @@
</span><span class="cx"> $this->flush_cache();
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+ /**
+ * Saves the action and filter-related globals so they can be restored later
+ *
+ * Stores $merged_filters, $wp_actions, $wp_current_filter, and $wp_filter
+ * on a class variable so they can be restored on tearDown() using _restore_hooks()
+ * @global array $merged_filters
+ * @global array $wp_actions
+ * @global array $wp_current_filter
+ * @global array $wp_filter
+ * @return void
+ */
+ protected function _backup_hooks() {
+ $globals = array( 'merged_filters', 'wp_actions', 'wp_current_filter', 'wp_filter' );
+ foreach ( $globals as $key ) {
+ self::$hooks_saved[ $key ] = $GLOBALS[ $key ];
+ }
+ }
+
+ /**
+ * Restores the hook-related globals to their state at setUp()
+ *
+ * so that future tests aren't affected by hooks set during this last test
+ *
+ * @global array $merged_filters
+ * @global array $wp_actions
+ * @global array $wp_current_filter
+ * @global array $wp_filter
+ * @return void
+ */
+ protected function _restore_hooks(){
+ $globals = array( 'merged_filters', 'wp_actions', 'wp_current_filter', 'wp_filter' );
+ foreach ( $globals as $key ) {
+ $GLOBALS[ $key ] = self::$hooks_saved[ $key ];
+ }
+ }
+
</ins><span class="cx"> function flush_cache() {
</span><span class="cx"> global $wp_object_cache;
</span><span class="cx"> $wp_object_cache->group_ops = array();
</span></span></pre>
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