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# coding=utf-8
from operator import itemgetter
import socket
import prolog.engine
import prolog.util
from server.hints import Hint, HintPopup
id = 158
number = 68
visible = True
facts = None
solution = '''\
memb158(X, [X|_]).
memb158(X, [_|T]) :-
memb158(X, T).
check158([], _, _).
check158([X/Y | T], R, Xc/Yc) :-
{ (X-Xc)*(X-Xc) + (Y-Yc)*(Y-Yc) =< R*R },
check158(T, R, Xc/Yc).
center(L, R, Xc/Yc) :-
memb158(Xc/Yc, L),
check158(L, R, Xc/Yc).
'''
test_cases = [
('setof(P, center([7.3/7.3, 3.3/0.0, 0.6/1.2, 4.1/6.9], 9.0, P), L), L = [X1/Y1, X2/Y2], \
abs(X1 - 3.3) =< 1e-8, abs(Y1 - 0.0) =< 1e-8, abs(X2 - 4.1) =< 1e-8, abs(Y2 - 6.9) =< 1e-8',
[{}]),
('setof(P, center([4.7/3.2, 1.0/ -4.4, 0.2/4.1, 0.0/6.5, 2.1/4.1, 2.2/1.5, 5.5/ -2.7], 7.0, P), L), L = [X1/Y1], \
abs(X1 - 2.2) =< 1e-8, abs(Y1 - 1.5) =< 1e-8',
[{}]),
('setof(P, center([1.0/0.0, 2.0/0.0, 3.0/0.0, 4.0/0.0, 3.5/0.0], 2.3, P), L), L = [X1/Y1, X2/Y2], \
abs(X1 - 2.0) =< 1e-8, abs(Y1 - 0.0) =< 1e-8, abs(X2 - 3.0) =< 1e-8, abs(Y2 - 0.0) =< 1e-8',
[{}]),
]
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
except socket.timeout:
pass
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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