def test_eq():
c1 = Circle(5)
c2 = Circle(5)
assert c1 == c2
def test_sort():
circles = [Circle(2), Circle(5), Circle(99), Circle(10)]
circles.sort()
assert circles == [Circle(2), Circle(5), Circle(10), Circle(99)]
def test_gt():
c1 = Circle(5)
c2 = Circle(3)
assert c1 > c2
def test_lt():
c1 = Circle(5)
c2 = Circle(3)
assert c2 < c1
def test_radius():
c1 = Circle(4)
assert c1.radius == 4
def test_floordiv():
c1 = Circle(9)
c2 = Circle(4)
assert c1 / c2 == Circle(2.25)
def test_add():
c1 = Circle(5)
c2 = Circle(2)
assert c1 + c2 == Circle(7)
def test_mul():
c1 = Circle(4)
assert c1 * 2 == Circle(8)
assert 2 * c1 == Circle(8)
def test_repr():
c1 = Circle(5)
assert repr(c1) == 'Circle(5)'
def test_str():
c1 = Circle(5)
assert str(c1) == 'Circle with radius: 5'
def test_area():
c1 = Circle(4)
assert c1.area == math.pi * 16
def test_setdiameter():
c1 = Circle(4)
assert c1.diameter == 8
c1.diameter = 5
assert c1.diameter == 5
assert c1.radius == 2.5
def test_diameter():
c1 = Circle(4)
assert c1.diameter == 8