Example #1
0
def test_action_to_steps():
    aut = symbolic.Automaton()
    aut.declare_variables(x='bool', y=(0, 17))
    aut.varlist['env'] = ['x']
    aut.varlist['sys'] = ['y']
    keys = ('x', 'y')
    aut.init['env'] = aut.add_expr('x /\ (y = 1)')
    aut.action['sys'] = aut.add_expr("y' /= y")
    aut.action['env'] = aut.true
    aut.qinit = '\A \A'
    aut.moore = True
    aut.build()
    g = enum.action_to_steps(aut, qinit=aut.qinit)
    # 36 states reachable, but should enumerate fewer
    assert len(g) == 4, g.nodes()
    # these are state projections (partial assignments)
    # a state assigns to all variable names
    # (infinitely many)
    states = {
        enum._node_tuple(d, keys)
        for u, d in g.nodes(data=True)}
    assert tuple([True, 1]) in states, states
    r = {p for p in states if p[0] is True}
    assert len(r) == 2
    r = {p for p in states if p[0] is False}
    assert len(r) == 2
def test_action_to_steps():
    aut = symbolic.Automaton()
    aut.declare_variables(x='bool', y=(0, 17))
    env = 'env_foo'
    sys = 'sys_bar'
    aut.varlist[env] = ['x']
    aut.varlist[sys] = ['y']
    keys = ('x', 'y')
    aut.init[env] = aut.add_expr('x /\ (y = 1)')
    aut.init[sys] = aut.true
    aut.action[env] = aut.true
    aut.action[sys] = aut.add_expr("y' /= y")
    aut.win['<>[]'] = aut.bdds_from('x')
    aut.win['[]<>'] = aut.bdds_from('y != 1')
    aut.qinit = '\A \A'
    aut.moore = True
    aut.prime_varlists()
    g = enum.action_to_steps(aut, env=env, sys=sys, qinit=aut.qinit)
    # 36 states reachable, but should enumerate fewer
    assert len(g) == 4, g.nodes()
    # these are state projections (partial assignments)
    # a state assigns to all variable names
    # (infinitely many)
    states = {enum._node_tuple(d, keys) for u, d in g.nodes(data=True)}
    assert tuple([True, 1]) in states, states
    r = {p for p in states if p[0] is True}
    assert len(r) == 2
    r = {p for p in states if p[0] is False}
    assert len(r) == 2
Example #3
0
def test_node_tuple():
    d = dict(a=10, b='g', gandalf=True)
    keys = ('b', 'gandalf', 'a')
    r = enum._node_tuple(d, keys)
    r_ = ('g', True, 10)
    assert r == r_, r
Example #4
0
def test_node_tuple():
    d = dict(a=10, b='g', gandalf=True)
    keys = ('b', 'gandalf', 'a')
    r = enum._node_tuple(d, keys)
    r_ = ('g', True, 10)
    assert r == r_, r