def test_perimeter_two_vectors(self):
u = (1, 2)
v = (3, 4)
with self.assertRaises(
TypeError,
msg='should raise TypeError when passing only one vector'):
perimeter([u, v])
def test_perimeter_vectors_holding_other_than_numbers(self):
u = ('a', 'b')
v = ('c', 'd')
w = ('e', 'f')
with self.assertRaises(
TypeError,
msg=
'should raise TypeError when passing vectors holding no numeric values'
):
perimeter([u, v, w])
def test_perimeter_vectors_different_sizes(self):
u = (0, 0)
v = (1, 0)
w = (0, 1, 0)
with self.assertRaises(
ValueError,
msg=
'should raise ValueError when passing two vectors of different sizes'
):
perimeter([u, v, w])
def test_3d_perimeter_happy_path(self):
v1 = (0, 0, 1)
v2 = (1, 0, 1)
v3 = (0, 1, 1)
perimeter_actual_result = perimeter([v1, v2, v3])
perimeter_expected_result = 1 + sqrt(2) + 1
self.assertEqual(perimeter_actual_result, perimeter_expected_result,
'add 2 vectors of same size should match')
def test_perimeter_single_vector(self):
u = (1, 2)
with self.assertRaises(
TypeError,
msg='should raise TypeError when passing only one vector'):
perimeter(u)