def test_equals_2(self): self.assertEqual(group_in_10s(8, 12, 38, 3, 17, 19, 25, 35, 50), [[3, 8], [12, 17, 19], [25], [35, 38], None, [50]])
def test_equals(self): self.assertEqual(group_in_10s(1, 2, 3), [[1, 2, 3]])
def test_equals_4(self): self.assertEqual(group_in_10s(), [])
def test_equals_5(self): self.assertEqual(group_in_10s(100), [ None, None, None, None, None, None, None, None, None, None, [100]])
def test_equals_3(self): self.assertEqual(group_in_10s(12, 10, 11, 13, 25, 28, 29, 49, 51, 90), [None, [10, 11, 12, 13], [25, 28, 29], None, [49], [51], None, None, None, [90]])