def test_radius_changes_logged(self):
circle = Circle(2)
self.assertEqual(circle.radius_changes, [2])
circle.radius = 3
self.assertEqual(circle.radius_changes, [2, 3])
circle.diameter = 3
self.assertEqual(circle.radius_changes, [2, 3, 1.5])
def test_change_diameter():
c = Circle(4)
assert c.diameter == 8
c.diameter = 8
assert c.radius == 4
assert c.diameter == 8
def test_set_diameter(self):
circle = Circle(2)
self.assertEqual(circle.diameter, 4)
circle.diameter = 3
self.assertEqual(circle.radius, 1.5)