def test_polygon_new(self):
polygon = PolygonNew()
self.assertEqual(0, len(polygon.points))
polygon.pre_add_point(QPointF(2, 3))
self.assertEqual(0, len(polygon.points))
painter = mock.MagicMock()
polygon.paint(painter, None)
polygon.add_point(QPointF(4, 5))
self.assertEqual(1, len(polygon.points))
painter = mock.MagicMock()
polygon.paint(painter, None)
polygon.remove_point()
self.assertEqual(0, len(polygon.points))
polygon.remove_point()
self.assertEqual(0, len(polygon.points))
painter = mock.MagicMock()
polygon.paint(painter, None)
