def test_sphere_init_methods():
s = Sphere(test_radius_int)
assert (s.radius == test_radius)
assert (s.diameter == test_diameter)
assert (s.circumference == test_circum)
assert (s.area == test_sphere_area)
assert (s.volume == test_sphere_volume)
# Test diameter property setter
s.diameter = test_diameter * float(2.0)
assert (s.radius == test_radius * float(2.0))
assert (s.diameter == test_diameter * float(2.0))
assert (s.circumference == test_circum * float(2.0))
assert (s.area == test_sphere_area * float(4.0))
assert (s.volume == test_sphere_volume * float(8.0))
def test_set_diameter():
radius = 1
c = Sphere(radius)
c.diameter = radius * 2
assert c.diameter == radius * 2