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# coding=utf-8
from operator import itemgetter
import prolog.engine
import server.problems
id = 102
number = 9
visible = False
facts = 'family_relations'
solution = '''\
connected(X, X, _).
connected(X, Y, N) :-
N > 0,
N1 is N - 1,
( parent(X, Z)
;
parent(Z, X) ),
connected(Z, Y, N1).
'''
test_cases = [
# ('descendant(anna, X)',
# [{'X': 'jerry'}, {'X': 'elaine'}, {'X': 'morty'}, {'X': 'helen'}]),
# ('descendant(daniela, X)',
# [{'X': 'nevia'}, {'X': 'aleksander'}, {'X': 'margaret'}, {'X': 'ana'}, {'X': 'aleksandr'}]),
# ('descendant(X, william)',
# [{'X': 'vanessa'}, {'X': 'patricia'}, {'X': 'susan'}, {'X': 'john'}, {'X': 'michael'}, {'X': 'michelle'}]),
]
def test(code, aux_code):
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0)
if engine_id is not None and 'error' not in map(itemgetter(0), output):
# Engine successfully created, and no syntax error in program.
for query, answers in test_cases:
if prolog.engine.check_answers(engine_id, query=query, answers=answers, timeout=1.0):
n_correct += 1
finally:
if engine_id:
prolog.engine.destroy(engine_id)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
return n_correct, len(test_cases), hints
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