opencog-atomspace / tests / query / BuggyLinkUTest.cxxtest

/*
 * tests/query/BuggyLinkUTest.cxxtest
 *
 * Copyright (C) 2014 Linas Vepstas
 * All Rights Reserved
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License v3 as
 * published by the Free Software Foundation and including the exceptions
 * at http://opencog.org/wiki/Licenses
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, write to:
 * Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <opencog/atomspace/AtomSpace.h>
#include <opencog/guile/SchemeEval.h>
#include <opencog/util/Logger.h>
using namespace opencog;

class BuggyLinkUTest: public CxxTest::TestSuite
{
private:
        AtomSpacePtr as;
        SchemeEval* eval;

public:
    BuggyLinkUTest(void)
    {
        logger().set_level(Logger::DEBUG);
        logger().set_print_to_stdout_flag(true);

        as = createAtomSpace();
        eval = SchemeEval::get_scheme_evaluator(as);
        eval->eval("(add-to-load-path \"" PROJECT_SOURCE_DIR "\")");

    }

    ~BuggyLinkUTest()
    {
        // Erase the log file if no assertions failed.
        if (!CxxTest::TestTracker::tracker().suiteFailed())
                std::remove(logger().get_filename().c_str());
    }

    void setUp(void);
    void tearDown(void);

    void test_link(void);
};

void BuggyLinkUTest::tearDown(void)
{
    as->clear();
}

void BuggyLinkUTest::setUp(void)
{
    as->clear();
}

#define getarity(hand) hand->get_arity()

/*
 * BuggyLink unit test.  Test binding to unquoted links.
 * This test explicitly tests the bug described in
 * https://github.com/opencog/opencog/issues/1025
 * The old pattern matcher would crash with a null-pointer deref.
 * The current one works great.
 */
void BuggyLinkUTest::test_link(void)
{
    logger().debug("BEGIN TEST: %s", __FUNCTION__);

    eval->eval("(load-from-path \"tests/query/buggy-link.scm\")");

    Handle bindy = eval->eval_h("bindy");
    TSM_ASSERT("Failed to load test data", Handle::UNDEFINED != bindy);

    Handle lily = HandleCast(bindy->execute(as.get()));
    logger().debug() << "Result is this:\n" << lily->to_string();

    TS_ASSERT_EQUALS(1, getarity(lily));
}