Ticket #21169: next-to-each-unit-r2.patch

tests/filters.php

@@ -240 +240 @@
                 $this->assertFalse( empty($args[0][1]->foo) );
 
         }
+
+        function _self_removal($tag) {
+                remove_action( $tag, array(&$this, '_self_removal'), 10, 1 );
+                return $tag;
+        }
+
+        function test_filter_removal_during_filter() {
+                $tag = rand_str();
+                $a = new MockAction();
+                $b = new MockAction();
+
+                add_action( $tag, array(&$a, 'filter_append'), 11, 1 );
+                add_action( $tag, array(&$b, 'filter_append'), 12, 1 );
+                add_action( $tag, array(&$this, '_self_removal'), 10, 1 );
+
+                $result = apply_filters($tag, $tag);
+                $this->assertEquals( 1, $a->get_call_count(), 'priority 11 filters should run after priority 10 empties itself' );
+                $this->assertEquals( 1, $b->get_call_count(), 'priority 12 filters should run after priority 10 empties itself and priority 11 runs' );
+                $this->assertEquals( $result, $tag . '_append_append', 'priority 11 and 12 filters should run after priority 10 empties itself' );
+        }
 }