def test_fuse_single_swap(self):
first = Effect([], ["*"])
second = Effect(["*", "*"], ["*", "*"])
result = Effect(["*"], ["*", "*"])
self.assertEqual(first.fuse(second), result)
def test_fuse_empty_single(self):
first = Effect([], [])
second = Effect([], ["*"])
result = Effect([], ["*"])
self.assertEqual(first.fuse(second), result)