def test_one_element_matrix(self):
self.assertEqual(zeroMatrix([[1]]), [[1]])
def test_no_zeroes(self):
self.assertEqual(zeroMatrix([[1, 2], [3, 4]]), [[1, 2], [3, 4]])
def test_empty_matrix(self):
self.assertEqual(zeroMatrix([[]]), [[]])
def test_all_zeroes(self):
self.assertEqual(zeroMatrix([[0, 0], [0, 0]]), [[0, 0], [0, 0]])
def test_three_by_three(self):
self.assertEqual(zeroMatrix([[2, 1, 2], [0, 4, 0], [6, 7, 0]]),
[[0, 1, 0], [0, 0, 0], [0, 0, 0]])
def test_two_by_three_two_zeroes(self):
self.assertEqual(zeroMatrix([[0, 0, 3], [2, 1, 4]]),
[[0, 0, 0], [0, 0, 4]])
def test_two_by_three_one_zero(self):
self.assertEqual(zeroMatrix([
[1, 0, 2],
[3, 4, 5],
]), [[0, 0, 0], [3, 0, 5]])
def test_two_by_two_matrix(self):
self.assertEqual(zeroMatrix([[1, 2], [3, 0]]), [[1, 0], [0, 0]])