function testCommentMetaFilter()
{
$post_id = $this->factory->post->create();
$comment_id = $this->factory->comment->create(array('comment_post_ID' => $post_id));
$comment = new TimberComment($comment_id);
$comment->update('ghost', 'busters');
add_filter('timber_comment_get_meta_field', array($this, 'filter_timber_comment_get_meta_field'), 10, 4);
$this->assertEquals($comment->meta('ghost'), 'busters');
}
