Add effort controller to controller switch test

Author: urfeex

ur_robot_driver/test/integration_test_controller_switch.py

@@ -227,6 +227,14 @@ def test_activating_controller_with_running_position_controller_fails(self):
                 ],
             ).ok
         )
+        self.assertFalse(
+            self._controller_manager_interface.switch_controller(
+                strictness=SwitchController.Request.STRICT,
+                activate_controllers=[
+                    "forward_effort_controller",
+                ],
+            ).ok
+        )
         self.assertFalse(
             self._controller_manager_interface.switch_controller(
                 strictness=SwitchController.Request.STRICT,