def test_circle_initialization_str_repr_and_properties(self):
s1 = Sphere(10)
s2 = Sphere.from_diameter(40)
assert type(s2) == Sphere
self.assertEqual(s1.radius, 10.0)
self.assertEqual(s1.diameter, 20.0)
self.assertEqual(s2.radius, 20.0)
self.assertEqual(s2.diameter, 40.0)
s1.radius = 30
self.assertEqual(s1.diameter, 60.0)
s2.diameter = 30
self.assertEqual(s2.radius, 15.0)
self.assertEqual(str(s1), "Sphere with radius: 30.000")
self.assertEqual(repr(s1), "Sphere(30.0)")
self.assertEqual(round(s1.area), 11310)
with pytest.raises(AttributeError) as error:
s1.area = 50
assert "AttributeError: can't set attribute" in error
self.assertEqual(round(s1.volume), 113097)
with pytest.raises(AttributeError) as error:
s1.volume = 50
assert "AttributeError: can't set attribute" in error
def test_area():
s = Sphere(10)
assert s.area() == 1256.6370614359173
def test_unhappy_set_area():
c = Sphere(1)
with pytest.raises(AttributeError) as e:
c.area = 1
