opencog-atomspace / tests / atoms / join / CompoundJoinUTest.cxxtest

/*
 * tests/atoms/join/CompoundJoinUTest.cxxtest
 *
 * Copyright (C) 2020 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/atoms/value/LinkValue.h>
#include <opencog/atomspace/AtomSpace.h>
#include <opencog/guile/SchemeEval.h>
#include <opencog/util/Logger.h>

using namespace opencog;

class CompoundJoinUTest: public CxxTest::TestSuite
{
private:
	AtomSpacePtr _as;
	SchemeEval* eval;

public:
	CompoundJoinUTest(void)
	{
		logger().set_level(Logger::INFO);
		logger().set_print_to_stdout_flag(true);
		logger().set_timestamp_flag(false);
		logger().set_sync_flag(true);

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

	~CompoundJoinUTest()
	{
		// 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);

	// Test the examples on the wiki page
	// https://wiki.opencog.org/w/JoinLink
	void test_compound(void);
};

void CompoundJoinUTest::tearDown(void)
{
	_as->clear();
}

void CompoundJoinUTest::setUp(void)
{
	_as->clear();
}

#define N _as->add_node
#define L _as->add_link

/*
 * Wiki page "Compound structures"
 */
void CompoundJoinUTest::test_compound(void)
{
	logger().info("BEGIN TEST: %s", __FUNCTION__);

	eval->eval("(load-from-path \"tests/atoms/join/compound-join.scm\")");

	// ----------------------------------
	ValuePtr vp = eval->eval_v("(cog-execute! min-compound)");
	printf("min-compound = %s\n", vp->to_string().c_str());
	TS_ASSERT(nameserver().isA(vp->get_type(), LINK_VALUE));
	HandleSeq results = LinkValueCast(vp)->to_handle_seq();
	TS_ASSERT_EQUALS(results.size(), 1);

	Handle X = N(VARIABLE_NODE, "X");
	Handle Y = N(VARIABLE_NODE, "Y");
	Handle LXY = L(LIST_LINK, X,Y);
	TS_ASSERT_EQUALS(results[0], LXY);

	// ----------------------------------
	vp = eval->eval_v("(cog-execute! max-compound)");
	printf("max-compound = %s\n", vp->to_string().c_str());
	TS_ASSERT(nameserver().isA(vp->get_type(), LINK_VALUE));
	results = LinkValueCast(vp)->to_handle_seq();
	TS_ASSERT_EQUALS(results.size(), 1);

	Handle E = L(EVALUATION_LINK, N(PREDICATE_NODE, "part of"), LXY);

	TS_ASSERT_EQUALS(results[0], E);

	// ------------
	logger().info("END TEST: %s", __FUNCTION__);
}