def test_rotate2d_multiple_vector_arg_dimension(self):
angle = pi
v = (1, 0, 0)
with self.assertRaises(
TypeError,
msg='should raise TypeError when not passing 2D vector'):
rotate2d_multiple(angle, [v])
def test_rotate2d_multiple_rotation_arg(self):
angle = 'a'
v = (1, 0)
with self.assertRaises(
TypeError,
msg='should raise TypeError when not passing numeric angle'):
rotate2d_multiple(angle, [v])
def test_rotate2d_multiple_vector_arg_numeric(self):
angle = pi
v = ('a', 'b')
with self.assertRaises(
TypeError,
msg='should raise TypeError when not passing numeric 2D vector'
):
rotate2d_multiple(angle, [v])
def test_rotate2d_multiple_happy_path(self):
angle = pi / 2
vectors = [(1, 0), (2, 2)]
actual_rotate2d_multiple_result = rotate2d_multiple(angle, vectors)
expected_rotate2d_multiple_result = [(0, 1), (-2, 2)]
self.assertAlmostEqual(
actual_rotate2d_multiple_result[0][0],
expected_rotate2d_multiple_result[0][0],
msg='rotate2d x should approximately match for v[0]')
self.assertAlmostEqual(
actual_rotate2d_multiple_result[0][1],
expected_rotate2d_multiple_result[0][1],
msg='rotate2d y should approximately match for v[0]')
self.assertAlmostEqual(
actual_rotate2d_multiple_result[1][0],
expected_rotate2d_multiple_result[1][0],
msg='rotate2d x should approximately match for v[1]')
self.assertAlmostEqual(
actual_rotate2d_multiple_result[1][1],
expected_rotate2d_multiple_result[1][1],
msg='rotate2d x should approximately match for v[1]')
def test_rotate2d_multiple_no_vectors(self):
angle = pi
with self.assertRaises(
TypeError,
msg='should raise TypeError when not passing numeric angle'):
rotate2d_multiple(angle, [])