def test_compare():
c1 = Circle(2)
c2 = Circle(4)
c3 = Circle(4)
assert (c1 > c2) == False
assert (c1 < c2) == True
assert (c1 == c2) == False
assert (c2 == c3) == True
def test_sub():
c1 = Circle(5)
c2 = Circle(1)
assert (c1 - c2) == Circle(4)
def test_radius():
c = Circle(4)
assert c.radius == 4
def test_reflected_numeric():
c = Circle(2)
assert (c * 3) == (3 * c)
def test_sort():
circles = [Circle(6), Circle(8), Circle(5), Circle(1), Circle(0), Circle(10)]
circles.sort()
assert circles == [Circle(0), Circle(1), Circle(5), Circle(6), Circle(8), Circle(10)]
def test_add_two_circles():
c1 = Circle(2)
c2 = Circle(4)
assert (c1 + c2) == Circle(6)
def test_mul():
c2 = Circle(4)
assert (c2 * 3) == Circle(12)
assert (3 * c2) == Circle(12)
def test_from_diameter():
c = Circle.from_diameter(8)
assert c.diameter == 8
assert c.radius == 4
def test_init():
c = Circle(4)
def test_str():
c = Circle(10)
assert str(c) == "Circle with radius: 10.000000"
def test_repr():
c = Circle(10)
d = eval(repr(c))
assert repr(c) == "Circle(10)"
assert d == c
def test_area():
c = Circle(5)
assert c.area == pi * 25
def test_set_diameter():
c = Circle(7)
c.diameter = 16
assert c.radius == 8
assert c.diameter == 16
def test_diameter():
c = Circle(4)
assert c.diameter == 8
def test_div():
c1 = Circle(10)
assert (c1 / 2) == Circle(5)
def test_init():
Circle(3)
