Ticket #21172: add-at-9-unit.patch

tests/test_filters.php

@@ -236 +236 @@
                 $this->assertFalse( empty($args[0][1]->foo) );
 
         }
+
+        function _add_at_nine($tag) {
+                $a = new MockAction();
+                add_action( $tag, array(&$a, 'filter_append'), 9, 1 );
+                return $tag;
+        }
+
+        function test_filter_addition_during_filter() {
+                $tag = rand_str();
+                $a = new MockAction();
+
+                add_action( $tag, array(&$this, '_add_at_nine'), 10, 1 );
+                add_action( $tag, array(&$a, 'filter_append'), 11, 1 );
+
+                $result = apply_filters($tag, $tag);
+                $this->assertEquals( $result, $tag . '_append', 'priority 9 action should not run after priority 10 action adds it' );
+
+        }
 }