def test_compare():
c1 = Circle(2)
c2 = Circle(4)
assert (c1 > c2) == False
assert (c1 < c2) == True
assert (c1 == c2) == False
c3 = Circle(4)
assert (c2 == c3) == True
def test_multiply_reflection():
c2 = Circle(4)
c3 = 3 * c2
assert c3.radius == 12
def test_multiply():
c2 = Circle(4)
c3 = c2 * 3
assert c3.radius == 12
def test_add():
c1 = Circle(2)
c2 = Circle(4)
c3 = c1 + c2
assert c3.radius == 6
def test_repr():
c = Circle(4)
repr(c) == 'Circle(4)'
def test_str():
c = Circle(4)
assert str(c) == 'Circle with radius: 4.000000'
def test_create_by_diameter():
c = Circle.circle_d(14)
assert c.diameter == 14
assert c.radius == 7
assert c.area == math.pi * 7**2
def test_reflected():
a_circle = Circle(3)
assert a_circle * 3 == 3 * a_circle
def test_change_diameter():
c = Circle(5)
c.diameter = 12
assert c.diameter == 12
assert c.radius == 6
def test_change_radius():
c = Circle(5)
c.radius = 2
assert c.diameter == 4
def test_diameter():
c = Circle(5)
assert c.diameter == 10
def test_augmented_assignment_mul():
c1 = Circle(2)
c1 *= 2
assert c1.radius == 4
def test_augmented_assignment_add():
c1 = Circle(2)
c2 = Circle(4)
c1 += c2
assert c1.radius == 6
def test_divide_reflection():
c2 = Circle(4)
c3 = 12 / c2
assert c3.radius == 3
def test_divide():
c2 = Circle(6)
c3 = c2 / 3
assert c3.radius == 2
def test_area():
c = Circle(4)
assert c.area == math.pi * 4**2
def test_sorting():
circles = [
Circle(6),
Circle(7),
Circle(8),
Circle(4),
Circle(0),
Circle(2),
Circle(3),
Circle(5),
Circle(9),
Circle(1)
]
circles.sort()
assert circles == [
Circle(0),
Circle(1),
Circle(2),
Circle(3),
Circle(4),
Circle(5),
Circle(6),
Circle(7),
Circle(8),
Circle(9)
]
def test_radius():
c = Circle(4)
assert c.radius == 4