def test_one_change():
p = Parameter(1)
p.push(2)
assert p.value == 2
def test_one_change():
p = Parameter(1)
p.push(2)
assert p.value == 2
def test_push_pop():
p = Parameter(1)
p.push(2)
p.pop()
assert p.value == 1
def test_push_pop():
p = Parameter(1)
p.push(2)
p.pop()
assert p.value == 1
