public function testBuildPlaylistTracksReference() { $tracksReference = (object) ['href' => 'https://api.spotify.com/...', 'total' => 30]; $result = $this->valueObjectBuilder->buildPlaylistTracksReference($tracksReference); $this->assertEquals($tracksReference->href, $result->getHref(), 'Tracks reference href should be set'); $this->assertEquals($tracksReference->total, $result->getTotal(), 'Tracks reference total should be set'); }