fix: fixed so that running tests now works

tests/test_mainwin.py

@@ -28,15 +28,17 @@ class TestViewUnit(unittest.TestCase):
         print('setup')
         self.app = QApplication(sys.argv)
         theme.apply(self.app)
-        ctrl_c.setup(self.app)
+        # ctrl_c.setup(self.app)
         self.mw = MainWindow()
         self.mw.show()
 
     def tearDown(self) -> None:
         print("teardown")
         self.mw.rst.wait_for_stop()
-        # self.mw.rst.shutdown()
         self.app.quit()
+        print('app quit called')
+        del self.mw
+        del self.app
 
     def test_defaults(self):
 
@@ -100,8 +102,8 @@ class TestViewUnit(unittest.TestCase):
 
         mw.append_data("sine", point)       
         item.value.append.assert_called_once_with(point)
-        assert item.set_alarm.called_once_with(True)
-  
+        item.set_alarm.assert_called_once_with(True)
+
     def test_on_make_new_plot(self):
         mw = self.mw