Persist desktop client preferences

desktop-client/test_preferences.py

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+from unittest.mock import Mock
+
+from PyQt6.QtCore import QSettings
+
+import room_widget
+from main import VlcSyncApp
+from test_chat import PlayerSignals
+
+
+def test_preferences_survive_restart(qtbot, monkeypatch, tmp_path):
+    monkeypatch.setattr(room_widget, "VLCSyncPlayer",
+                        lambda frame: Mock(signals=PlayerSignals()))
+    path = str(tmp_path / "preferences.ini")
+    settings = QSettings(path, QSettings.Format.IniFormat)
+    first = VlcSyncApp(settings)
+    qtbot.addWidget(first)
+    first.show()
+    first.lobby_widget.username_input.setText("Alex")
+    first.room_widget.volume_slider.setValue(37)
+    first._remember_media_folder(str(tmp_path / "movie.mkv"))
+    first.room_widget.chat_container.hide()
+    first.room_widget.tags_list.hide()
+    first.resize(900, 650)
+    first.close()
+
+    second = VlcSyncApp(QSettings(path, QSettings.Format.IniFormat))
+    qtbot.addWidget(second)
+    assert second.lobby_widget.username_input.text() == "Alex"
+    assert second.room_widget.volume_slider.value() == 37
+    assert second.lobby_widget.media_folder == str(tmp_path)
+    assert second.room_widget.chat_container.isHidden()
+    assert second.room_widget.tags_list.isHidden()
+    assert second.size() == first.size()
+    assert second.sync_client.url == "wss://video-sync.peterstockings.com/ws"
+
+
+def test_missing_folder_and_volume_bounds(qtbot, monkeypatch, tmp_path):
+    monkeypatch.setattr(room_widget, "VLCSyncPlayer",
+                        lambda frame: Mock(signals=PlayerSignals()))
+    settings = QSettings(str(tmp_path / "preferences.ini"), QSettings.Format.IniFormat)
+    settings.setValue("media_folder", str(tmp_path / "missing"))
+    settings.setValue("volume", 200)
+    window = VlcSyncApp(settings)
+    qtbot.addWidget(window)
+    assert window.lobby_widget.media_folder == ""
+    assert window.room_widget.volume_slider.value() == 100