def test_1():
sol = Solution()
assert sol.wiggleMaxLength([1, 7, 4, 9, 2, 5]) == 6
assert sol.wiggleMaxLength([1, 17, 5, 10, 13, 15, 10, 5, 16, 8]) == 7
assert sol.wiggleMaxLength([1, 2, 3, 4, 5, 6, 7, 8, 9]) == 2
def test_2():
sol = Solution()
assert sol.wiggleMaxLength([0, 0]) == 1
def test_0():
sol = Solution()
assert sol.wiggleMaxLength([]) == 0
assert sol.wiggleMaxLength([2]) == 1
assert sol.wiggleMaxLength([1, 2]) == 2
assert sol.wiggleMaxLength([2, 1]) == 2