tests überarbeitet

tests/test_variable_wrapper.py

@@ -51,6 +51,28 @@ class TestVariableWrapper(unittest.TestCase):
             "new_value",
         )
 
+    @patch("sn_basis.functions.variable_wrapper.QgsExpressionContextUtils.setGlobalVariable")
+    def test_set_variable_global_writes_prefixed_name(self, mock_set_global):
+        variable_wrapper.set_variable("verfahrensnummer", "123", scope="global")
+
+        mock_set_global.assert_called_once_with("sn_verfahrensnummer", "123")
+
+    @patch("sn_basis.functions.variable_wrapper.QgsExpressionContextUtils.globalScope")
+    def test_get_variable_global_returns_empty_string_fallback(self, mock_global_scope):
+        mock_global_scope.return_value = _Scope("")
+
+        value = variable_wrapper.get_variable("nicht_vorhanden", scope="global")
+
+        self.assertEqual(value, "")
+
+    def test_get_variable_invalid_scope_raises(self):
+        with self.assertRaises(ValueError):
+            variable_wrapper.get_variable("foo", scope="invalid")
+
+    def test_set_variable_invalid_scope_raises(self):
+        with self.assertRaises(ValueError):
+            variable_wrapper.set_variable("foo", "bar", scope="invalid")
+
 
 if __name__ == "__main__":
     unittest.main()