add test for QgsSettings.setEnumValue

tests/src/python/test_qgssettings.py

@@ -398,6 +398,12 @@ def test_enumValue(self):
         self.assertEqual(self.settings.enumValue('enum', QgsTolerance.Pixels), QgsTolerance.Pixels)
         self.assertEqual(type(self.settings.enumValue('enum', QgsTolerance.Pixels)), QgsTolerance.UnitType)
 
+    def test_setEnumValue(self):
+        self.settings.setValue('enum', 'LayerUnits')
+        self.assertEqual(self.settings.enumValue('enum', QgsTolerance.Pixels), QgsTolerance.LayerUnits)
+        self.settings.setEnumValue('enum', QgsTolerance.Pixels)
+        self.assertEqual(self.settings.enumValue('enum', QgsTolerance.Pixels), QgsTolerance.Pixels)
+
     def test_flagValue(self):
         pointAndLine = QgsMapLayerProxyModel.Filters(QgsMapLayerProxyModel.PointLayer | QgsMapLayerProxyModel.LineLayer)
         pointAndPolygon = QgsMapLayerProxyModel.Filters(QgsMapLayerProxyModel.PointLayer | QgsMapLayerProxyModel.PolygonLayer)