def test_make_zero_matrix(self):
m1 = [[1 for _ in range(4)] for _ in range(3)]
m2 = util.make_zero_matrix_of_same_dimension(m1)
self.assertEqual(len(m2), 3)
for a in m2:
self.assertEqual(len(a), 4)
for b in a:
self.assertEqual(b, 0)
def add_to(first, second):
if first is None:
first = util.make_zero_matrix_of_same_dimension(second)
util.add_to(first, second)
return first
