def test_merge_5(self):
actual = merge([8, 16, 16, 8])
expected = [8, 32, 8, 0]
self.assertEqual(actual, expected)
def test_merge_1(self):
actual = merge([2, 0, 2, 4])
expected = [4, 4, 0, 0]
self.assertEqual(actual, expected)
def test_merge_2(self):
actual = merge([0, 0, 2, 2])
expected = [4, 0, 0, 0]
self.assertEqual(actual, expected)