Add tests using the Qt model tester

tests/test_core/test_core_itemmodel.py

@@ -23,11 +23,12 @@ from __future__ import annotations
 import pytest
 
 from PyQt6.QtCore import QMimeData, QModelIndex, Qt
+from PyQt6.QtTest import QAbstractItemModelTester
 
 from novelwriter.common import decodeMimeHandles
 from novelwriter.constants import nwConst
 from novelwriter.core.item import NWItem
-from novelwriter.core.itemmodel import INV_ROOT, NODE_FLAGS, ProjectNode
+from novelwriter.core.itemmodel import INV_ROOT, NODE_FLAGS, ProjectModel, ProjectNode
 from novelwriter.core.project import NWProject
 from novelwriter.enum import nwItemLayout, nwItemType
 
@@ -253,6 +254,14 @@ def testCoreItemModel_ProjectNode_Data(mockGUI, mockRnd, fncPath):
     assert scene.flags() == NODE_FLAGS | Qt.ItemFlag.ItemIsDragEnabled
 
 
+@pytest.mark.core
+def testCoreItemModel_ProjectModel_ModelTest(mockGUI):
+    """Run the Qt model tester on the model."""
+    project = NWProject()
+    model = ProjectModel(project.tree)
+    QAbstractItemModelTester(model)
+
+
 @pytest.mark.core
 def testCoreItemModel_ProjectModel_Interface(mockGUI, mockRnd, fncPath):
     """Test the model interface for the project model."""

tests/test_core/test_core_novelmodel.py

@@ -23,6 +23,7 @@ from __future__ import annotations
 import pytest
 
 from PyQt6.QtCore import QModelIndex, Qt
+from PyQt6.QtTest import QAbstractItemModelTester
 
 from novelwriter.core.indexdata import IndexHeading
 from novelwriter.core.novelmodel import NovelModel
@@ -32,6 +33,13 @@ from novelwriter.enum import nwNovelExtra
 from tests.tools import C, buildTestProject
 
 
+@pytest.mark.core
+def testCoreNovelModel_ModelTest(nwGUI):
+    """Run the Qt model tester on the model."""
+    model = NovelModel()
+    QAbstractItemModelTester(model)
+
+
 @pytest.mark.core
 def testCoreNovelModel_Interface(nwGUI, fncPath, mockRnd):
     """Test the novel model interface."""