public function test_post_already_moved()
 {
     $tracker = new BU_Navigation_Reorder_Tracker('page');
     // Check against post that has not moved
     $parent = get_post($this->posts['parent']);
     $this->assertFalse($tracker->post_already_moved($parent));
     $this->assertFalse($tracker->post_already_moved($parent->ID));
     // check pass by ID
     // Check against post that has moved
     $post = get_post($this->posts['child']);
     wp_update_post(array('ID' => $post->ID, 'post_parent' => $this->posts['edit'], 'menu_order' => 1));
     $moved = get_post($this->posts['child']);
     $tracker->mark_post_as_moved($moved);
     $this->assertTrue($tracker->post_already_moved($moved));
     $this->assertTrue($tracker->post_already_moved($moved->ID));
     // check pass by ID
 }