class TestCircle(unittest.TestCase):
def setUp(self):
self.c1 = Circle(2)
self.c2 = Circle(4.5)
self.c3 = Circle(6)
self.c4 = Circle.from_diameter(3)
self.c5 = Circle(6)
def tearDown(self):
pass
def test__init__(self):
with self.assertRaises(TypeError):
a_circle = Circle(-1)
another_circle = Circle('tri')
def test_diameter(self):
self.assertEqual(self.c1.diameter, 4)
self.assertEqual(self.c2.diameter, 4.5 * 2)
self.assertEqual(self.c3.diameter, 12)
def test_area(self):
self.assertEqual(self.c1.area, round(math.pi * 2**2, 5))
self.assertEqual(self.c2.area, round(math.pi * 4.5**2, 5))
self.assertEqual(self.c3.area, round(math.pi * 6**2, 5))
def test_from_diameter(self):
self.assertEqual(self.c4.diameter, 3)
self.assertEqual(self.c4.radius, 3 / 2)
with self.assertRaises(TypeError):
c = Circle.from_diameter('t')
def test__str__(self):
test_template = 'Circle with radius: {}'
self.assertEqual(self.c1.__str__(), test_template.format(2))
self.assertEqual(self.c2.__str__(), test_template.format(4.5))
self.assertEqual(self.c3.__str__(), test_template.format(6))
def test__repr__(self):
test_template = 'Circle({})'
self.assertEqual(self.c1.__repr__(), test_template.format(2))
self.assertEqual(self.c2.__repr__(), test_template.format(4.5))
self.assertEqual(self.c3.__repr__(), test_template.format(6))
def test__add__(self):
self.assertEqual(self.c1 + self.c3, Circle(8))
self.assertEqual(self.c2 + self.c3, Circle(10.5))
with self.assertRaises(TypeError):
self.c1 + 2
def test__iadd__(self):
self.assertEqual(self.c1.__iadd__(self.c2), Circle(6.5))
with self.assertRaises(TypeError):
self.c1 += 6
def test__mul__(self):
self.assertEqual(self.c5 * 2, Circle(12))
self.assertEqual(self.c2 * 5, Circle(4.5 * 5))
with self.assertRaises(TypeError):
self.c3 * self.c5
def test__rmul__(self):
self.assertEqual(2 * self.c5, Circle(6 * 2))
self.assertEqual(5 * self.c2, Circle(4.5 * 5))
def test__imul__(self):
self.assertEqual(self.c3.__imul__(3), Circle(18))
self.assertEqual(self.c2.__imul__(4), Circle(4.5 * 4))
with self.assertRaises(TypeError):
self.c3 *= self.c1
def test__gt__(self):
self.assertTrue(self.c2.radius > self.c1.radius)
self.assertTrue(self.c5.radius > self.c1.radius)
self.assertFalse(self.c2.radius > self.c5.radius)
def test__lt__(self):
self.assertTrue(self.c1.radius < self.c5.radius)
self.assertFalse(self.c2.radius < self.c1.radius)
self.assertTrue(self.c1.radius < self.c3.radius)
def test__eq__(self):
self.assertTrue(self.c3.radius == self.c5.radius)
