def test_statics2():
type_object = Type("object", None)
predicate_a = Predicate("a", [])
predicate_b = Predicate("b", [])
the_action = get_action("the-action", [], [predicate_a], [predicate_b], [])
statics = grounding._get_statics([predicate_a, predicate_b], [the_action])
assert predicate_a.name in statics and predicate_b.name not in statics
def test_statics1():
"""
A static predicate is a predicate, which doesn't occur in an effect of an
action.
"""
type_object = Type("object", None)
type_car = Type("car", type_vehicle)
type_city = Type("city", type_object)
type_country = Type("country", type_object)
types = {
"object": type_object,
"car": type_car,
"city": type_city,
"country": type_country,
}
predicate_orig = Predicate("at", [("car", types["car"]),
("dest", types["city"])])
predicate_dest = Predicate("at", [("car", types["car"]),
("orig", types["city"])])
predicate_in = Predicate("in", [("city", types["city"]),
("country", types["country"])])
action_drive_car = get_action(
"DRIVE-CAR",
[
("car", [types["car"]]),
("loc-orig", [types["city"]]),
("loc-dest", [types["city"]]),
],
[predicate_orig],
[predicate_dest],
[predicate_orig],
)
assert "in" in grounding._get_statics([predicate_in], [action_drive_car])
assert "dest" not in grounding._get_statics([predicate_dest],
[action_drive_car])
assert "orig" not in grounding._get_statics([predicate_orig],
[action_drive_car])
def test_create_operator():
statics = grounding._get_statics(
standard_domain.predicates.values(), [action_drive_car]
)
initial_state = [
Predicate("at", [("ford", types["car"]), ("freiburg", types["city"])])
]
operator = grounding._create_operator(
action_drive_car,
{"car": "ford", "dest": "berlin", "orig": "freiburg"},
[],
initial_state,
)
assert operator.name == "(DRIVE-CAR ford freiburg berlin)"
assert operator.preconditions == {"(at ford berlin)"}
assert operator.add_effects == {"(at ford freiburg)"}
assert operator.del_effects == {"(at ford berlin)"}
def test_add_del_effects():
parser = Parser("")
def parse_problem(domain, problem):
parser.domInput = domain
parser.probInput = problem
domain = parser.parse_domain(False)
return parser.parse_problem(domain, False)
dom_pddl = """
(define (domain dom)
(:requirements :typing)
(:predicates (ok ?v - object))
(:action theaction
:parameters (?x - object)
:precondition {0}
:effect {1}
)
)
"""
prob_pddl = """
;; See domain file for description of this test.
(define (problem prob)
(:domain dom)
(:objects y - object)
(:init)
(:goal (ok y)))
"""
tests = [
# Only add effect
("(and)", "(ok ?x)", set(), {"(ok y)"}, set()),
# Only delete effect
("(and)", "(and (not (ok ?x)))", set(), set(), {"(ok y)"}),
# Both add and delete effect
("(and)", "(and (ok ?x) (not (ok ?x)))", set(), {"(ok y)"}, set()),
# Precondition and add effect
("(and (ok ?x))", "(ok ?x)", {"(ok y)"}, set(), set()),
# Precondition and delete effect
("(and (ok ?x))", "(and (not (ok ?x)))", {"(ok y)"}, set(), {"(ok y)"}),
# Precondition and both add and delete effect
("(and (ok ?x))", "(and (ok ?x) (not (ok ?x)))", {"(ok y)"}, set(), set()),
]
for pre_in, eff_in, pre_exp, add_exp, del_exp in tests:
dom = dom_pddl.format(pre_in, eff_in)
problem = parse_problem(dom, prob_pddl)
domain = problem.domain
actions = domain.actions.values()
predicates = domain.predicates.values()
# Objects
objects = problem.objects
objects.update(domain.constants)
# Get the names of the static predicates
statics = grounding._get_statics(predicates, actions)
# Create a map from types to objects
type_map = grounding._create_type_map(objects)
# Transform initial state into a specific
init = grounding._get_partial_state(problem.initial_state)
# Ground actions
operators = grounding._ground_actions(actions, type_map, statics, init)
assert len(operators) == 1
op = operators[0]
assert op.preconditions == pre_exp
assert op.add_effects == add_exp
assert op.del_effects == del_exp
