f6a238efd5
The algorithm had two problems: it was removing only useless destination from universal destination (instead of removing the entire edge), and it was not properly iterating over the entire reachable automaton. * spot/twa/twagraph.cc: Fix it. * spot/twa/twagraph.hh: Adjust documentation. * tests/core/alternating.test: Add more tests. * tests/python/twagraph.py: Adjust. * NEWS: Mention the bug.
91 lines
2.4 KiB
Python
91 lines
2.4 KiB
Python
# -*- mode: python; coding: utf-8 -*-
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# Copyright (C) 2017 Laboratoire de Recherche et Développement de l'Epita
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# (LRDE).
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#
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# This file is part of Spot, a model checking library.
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#
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# Spot is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# Spot is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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# License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# This file tests various error conditions on the twa API
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import spot
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from buddy import bddtrue
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aut = spot.make_twa_graph(spot.make_bdd_dict())
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try:
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print(aut.to_str())
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exit(2)
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except RuntimeError as e:
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assert "no state" in str(e)
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try:
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aut.set_init_state(2)
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except ValueError as e:
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assert "nonexisting" in str(e)
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try:
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aut.set_univ_init_state([2, 1])
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except ValueError as e:
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assert "nonexisting" in str(e)
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aut.new_states(3)
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aut.set_init_state(2)
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assert aut.get_init_state_number() == 2
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e = aut.set_univ_init_state([2, 1])
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assert [2, 1] == list(aut.univ_dests(aut.get_init_state_number()))
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try:
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aut.get_init_state()
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except RuntimeError as e:
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s = str(e)
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assert "abstract interface" in s and "alternating automata" in s
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all = aut.set_buchi()
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aut.new_acc_edge(0, 1, bddtrue, True)
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try:
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s = aut.state_acc_sets(0)
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except RuntimeError as e:
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assert "state-based acceptance" in str(e)
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try:
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s = aut.state_is_accepting(0)
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except RuntimeError as e:
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assert "state-based acceptance" in str(e)
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aut.prop_state_acc(True)
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assert aut.state_acc_sets(0) == all
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assert aut.state_is_accepting(0) == True
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aut.set_init_state(0)
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aut.purge_unreachable_states()
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i = aut.get_init_state()
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assert aut.state_is_accepting(i) == True
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it = aut.succ_iter(i)
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it.first()
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assert aut.edge_number(it) == 1
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assert aut.state_number(it.dst()) == 1
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assert aut.edge_storage(it).src == 0
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assert aut.edge_storage(1).src == 0
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assert aut.edge_data(it).cond == bddtrue
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assert aut.edge_data(1).cond == bddtrue
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aut.release_iter(it)
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aut.purge_dead_states()
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i = aut.get_init_state()
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assert aut.state_is_accepting(i) == False
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