Makes http request cached for tests

album_cover_cache.go

@@ -81,7 +81,7 @@ func (c *AlbumCoverCache) fetch(a *Album) (io.ReadCloser, error) {
 	}
 	f, err := os.Create(c.coverPath(a))
 	if err != nil {
-		resp.Body.Close()
+		closeOrPanic(resp.Body, "GET:"+a.CoverURL)
 		return nil, err
 	}