def test_sphere_alt_constructor():
my_sphere = Sphere.from_diameter(8)
assert repr(my_sphere) == 'Sphere(4)'
assert my_sphere.diameter == 8
def my_sphere():
return Sphere(4)
def test_sphere_from_diameter():
s = Sphere.from_diameter(8)
assert s.radius == 4
def test_sphere_adding():
s1 = Sphere(2)
s2 = Sphere(3)
assert s1 + s2 == Sphere(5)
def test_sphere_area():
s = Sphere(4)
print(s.area)
assert "{:.2f}".format(s.area) == '201.06'
def test_sphere_volume():
s = Sphere(4)
print(s)
print(s.volume)
assert "{:.2f}".format(s.volume) == '268.08'
def test_sphere_repr():
s = Sphere(4)
assert (repr(s)) == "Sphere(4)"
def test_sphere_string():
s = Sphere(4)
assert s.__str__() == "Sphere with radius: 4.000000"
def test_sphere_init():
Sphere()
Sphere(4)