def test_mat_rows_are_vecs(self):
mat = Mat(
[1, 2, 3],
[4, 5, 6],
[7, 8, 9],
)
self.assertEqual(mat.row(0), Vec(1, 2, 3))
def test_normalize_row(self):
mat = Mat(
[1, 2, 3],
[0, 2, 0],
[1, 0, 0],
)
correct = Mat(
[1, 2, 3],
[0, 1, 0],
[1, 0, 0],
)
vec = mat.row(1)
vec.normalize_in_place()
self.assertEqual(mat, correct)
