def test_simple(self):
self.assertEqual(spiralize([[42]]), [42])
def test_3x3(self):
grid = [[77, 66, 44], [17, 16, 14], [37, 36, 34]]
self.assertEqual(spiralize(grid), [77, 66, 44, 14, 34, 36, 37, 17, 16])
def test_4x4(self):
grid = [[5, 4, 3, 2], [9, 8, 7, 3], [5, 1, 3, 4], [1, 0, 0, 5]]
self.assertEqual(spiralize(grid), [5, 4, 3, 2, 3, 4, 5, 0, 0, 1, 5, 9, 8, 7, 3, 1])
def test_2x2(self):
grid = [[1, 4], [3, 9]]
self.assertEqual(spiralize(grid), [1, 4, 9, 3])
