Switch test code to PyQt6

tests/test_core/test_core_item.py

@@ -24,7 +24,7 @@ import copy
 
 import pytest
 
-from PyQt5.QtGui import QIcon
+from PyQt6.QtGui import QIcon
 
 from novelwriter.core.item import NWItem
 from novelwriter.core.project import NWProject

tests/test_core/test_core_itemmodel.py

@@ -22,7 +22,7 @@ from __future__ import annotations
 
 import pytest
 
-from PyQt5.QtCore import QMimeData, QModelIndex, Qt
+from PyQt6.QtCore import QMimeData, QModelIndex, Qt
 
 from novelwriter.common import decodeMimeHandles
 from novelwriter.constants import nwConst

tests/test_core/test_core_project.py

@@ -25,7 +25,7 @@ from zipfile import ZipFile
 
 import pytest
 
-from PyQt5.QtWidgets import QMessageBox
+from PyQt6.QtWidgets import QMessageBox
 
 from novelwriter import CONFIG, SHARED
 from novelwriter.constants import nwFiles

tests/test_core/test_core_projectxml.py

@@ -27,7 +27,7 @@ from shutil import copyfile
 
 import pytest
 
-from PyQt5.QtGui import QColor
+from PyQt6.QtGui import QColor
 
 from novelwriter.constants import nwFiles
 from novelwriter.core.item import NWItem

tests/test_core/test_core_status.py

@@ -22,7 +22,7 @@ from __future__ import annotations
 
 import pytest
 
-from PyQt5.QtGui import QColor, QIcon
+from PyQt6.QtGui import QColor, QIcon
 
 from novelwriter.core.status import NWStatus, StatusEntry, _ShapeCache
 from novelwriter.enum import nwStatusShape