radio: fix SongEqualTo test

Due to how big the Song struct is now after including LastPlayedBy the
gopter generation fails generating strings too much. Instead we limit
generation of specific length strings to only the Song fields and not
DatabaseTrack and User fields. This avoids the limit hitting.

radio_test.go

@@ -18,9 +18,12 @@ func TestSongEqualTo(t *testing.T) {
 	tp.MinSuccessfulTests = 500
 	a := arbitrary.DefaultArbitraries()
 	p := gopter.NewProperties(tp)
+	ab := arbitrary.DefaultArbitraries()
 
 	// we only want songs with actual string data to compare against
 	a.RegisterGen(gen.UnicodeString(unicode.Katakana).SuchThat(func(s string) bool { return len(s) > 5 }))
+	a.RegisterGen(ab.GenForType(reflect.TypeOf(&User{})))
+	a.RegisterGen(ab.GenForType(reflect.TypeOf(&DatabaseTrack{})))
 
 	p.Property("song a != b",
 		a.ForAll(func(a, b Song) bool {

website/api/php/api.go

@@ -302,6 +302,7 @@ func (a *API) getCanRequest(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// TODO(wessie): check if this is the right identifier
 	identifier := r.RemoteAddr
 	userLastRequest, err := a.storage.Request(r.Context()).LastRequest(identifier)
 	if err != nil {