def test_scale_returns_new_circle_which_is_a_scaled_version_of_input_one(
self):
circle = Circle(Point(3, 0), 10)
new_circle = circle.offset(Point(3, 3))
self.assertEqual(new_circle.x(), 6)
self.assertEqual(new_circle.y(), 3)
self.assertEqual(new_circle.radius(), 10)
def test_offset_returns_new_circe_of_same_radius_but_shifted_center(self):
circle = Circle(Point(3, 0), 10)
new_circle = circle.offset(Point(3, 3))
self.assertEqual(new_circle.x(), 6)
self.assertEqual(new_circle.y(), 3)
self.assertEqual(new_circle.radius(), 10)
