R-1292: qBittorrent's 50 % rule owns the NORMAL limit only (up_limit through app/preferences), never the current speed mode's slot. Test with the alternative mode on, red-proved. Commit only.

controller/internal/upwatch/explain_test.go

@@ -3,6 +3,7 @@ package upwatch
 import (
 	"context"
 	"encoding/base64"
+	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
@@ -54,6 +55,20 @@ func fakeQBServer(t *testing.T, pw string, logins *int, expireNext *bool, limit
 			fmt.Sscan(r.Form.Get("limit"), &v)
 			*limit = v / 1024 * 1024
 			w.WriteHeader(200)
+		// R-1292: the 50 % rule reads and writes the NORMAL slot through app/preferences (normal mode here: the same value).
+		case "/api/v2/app/preferences":
+			fmt.Fprintf(w, `{"up_limit":%d,"alt_up_limit":0}`, *limit)
+		case "/api/v2/app/setPreferences":
+			r.ParseForm()
+			var m map[string]int64
+			if err := json.Unmarshal([]byte(r.Form.Get("json")), &m); err != nil {
+				w.WriteHeader(400)
+				return
+			}
+			if v, ok := m["up_limit"]; ok {
+				*limit = v / 1024 * 1024
+			}
+			w.WriteHeader(200)
 		default:
 			w.WriteHeader(404)
 		}