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
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
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