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# coding=utf-8
from operator import itemgetter
import prolog.engine
import server.problems
id = 117
number = 24
visible = True
facts = None
solution = '''\
conc117([], L, L).
conc117([H|T], L2, [H|L]) :-
conc117(T, L2, L).
sublist(L, S) :-
conc117(_, T, L),
conc117(S, _, T).
'''
test_cases = [
('sublist([], X)',
[{'X': '[]'}]),
('sublist([e, h, A, B, C], [f, a, e])',
[{'A': 'f', 'B': 'a', 'C': 'e'}]),
('sublist([e, A, l, B], [r, C, k])',
[{'A': 'r', 'B': 'k', 'C': 'l'}]),
('setof(L, sublist([a, b, c], L), X)',
[{'X': '[[], [a], [a, b], [a, b, c], [b], [b, c], [c]]'}]),
]
def test(program, solved_problems):
code = (program + '\n' +
server.problems.solutions_for_problems('prolog', solved_problems))
n_correct = 0
engine_id = None
try:
engine_id, output = prolog.engine.create(code=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)
passed = n_correct == len(test_cases)
hints = [{'id': 'test_results', 'args': {'passed': n_correct, 'total': len(test_cases)}}]
return passed, hints
def hint(program, solved_problems):
# TODO
return []
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