Ticket #5863: 5863.01.patch

src/bp-activity/bp-activity-functions.php

@@ -1623 +1623 @@
                 return false;
         }
 
+        // Purge comment cache for the root activity update
+        wp_cache_delete( $activity_id, 'bp_activity_comments' );
+
         // Recalculate the comment tree
         BP_Activity_Activity::rebuild_activity_comment_tree( $activity_id );
 

tests/phpunit/testcases/activity/functions.php

@@ -696 +696 @@
         }
 
         /**
+         * @group bp_activity_delete_comment
+         * @group cache
+         */
+        public function test_bp_activity_delete_comment_clear_cache() {
+                // add new activity update and comment to this update
+                $a1 = $this->factory->activity->create();
+                $a2 = bp_activity_new_comment( array(
+                        'activity_id' => $a1,
+                        'parent_id' => $a1,
+                        'content' => 'foo',
+                        'user_id' => 1,
+                ) );
+
+                // prime cache
+                bp_activity_get( array(
+                        'in' => array( $a1 ),
+                        'display_comments' => 'threaded',
+                ) );
+
+                // delete activity comment
+                bp_activity_delete_comment( $a1, $a2 );
+
+                // assert comment cache as empty for $a1
+                $this->assertEmpty( wp_cache_get( $a1, 'bp_activity_comments' ) );
+        }
+
+        /**
          * @group favorites
          * @group bp_activity_add_user_favorite
          */