def test_distance_vectors_holding_other_than_numbers(self):
u = ('a', 'b')
v = ('c', 'd')
with self.assertRaises(
TypeError,
msg=
'should raise TypeError when passing vectors holding no numeric values'
):
distance(u, v)
def test_distance_vectors_different_sizes(self):
u = (1, 2)
v = (1, 2, 3)
with self.assertRaises(
ValueError,
msg=
'should raise ValueError when passing two vectors of different sizes'
):
distance(u, v)
def test_distance_happy_path(self):
u = (1, 2, 3)
v = (4, 5, 6)
distance_actual_result = distance(u, v)
distance_expected_result = sqrt((u[0] - v[0])**2 + (u[1] - v[1])**2 +
(u[2] - v[2])**2)
self.assertEqual(distance_actual_result, distance_expected_result,
'distance vectors of same size should match')
def do_segments_intersect(s1, s2):
"""Return True if the two segments defined by s1 and s2 intersect,
or false otherwise.
s1 and s2 are two sets of points.
"""
u1, u2 = s1
v1, v2 = s2
d1 = distance(u1, u2)
d2 = distance(v1, v2)
try:
x, y = intersection(u1, u2, v1, v2)
return (distance(u1, (x, y)) <= d1 and distance(u2, (x, y)) <= d1
and distance(v1, (x, y)) <= d2 and distance(v2, (x, y)) <= d2)
except np.linalg.LinAlgError:
return False