tdd-ed code

tested.php

public function findMetasFor($photo = null) {
    if ($photo != null)
        return $this->findMetasForShow($photo);
    else return $this->findMetasForCategory();
}

private function findMetasForCategory() {
    if ($this->category != null)
        return $this->metainformation[$this->category];
    else return $this->metainformation["all_{$this->locale}"];
}

private function findMetasForShow($photo) {
    $album = $this->galleries->findGalleryAlbumByCategoryAndAlbumPermalink($this->category, $this->permalink);
    $metas = $this->metainformation["shots_{$this->locale}"];
    foreach($metas as $key => $meta) {
        if ($key == 'og:image')
            $meta->setEntity($photo);
        else $meta->setEntity($album);
    }
    return $metas;
}