opencog-atomspace / tests / query / AlwaysUTest.cxxtest

/*
 * tests/query/AlwaysUTest.cxxtest
 *
 * Copyright (C) 2019 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/guile/SchemeEval.h>
#include <opencog/atomspace/AtomSpace.h>
#include <opencog/util/Logger.h>
using namespace opencog;

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

public:
	AlwaysUTest(void)
	{
		logger().set_level(Logger::DEBUG);
		logger().set_print_to_stdout_flag(true);
		logger().set_timestamp_flag(false);

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

	}

	~AlwaysUTest()
	{
		// 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_basic(void);
	void test_more(void);
};

void AlwaysUTest::tearDown(void)
{
}

void AlwaysUTest::setUp(void)
{
}

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

/*
 * Basic AlwaysLink unit test. The simplest test possible.
 */
void AlwaysUTest::test_basic(void)
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle red_set = eval->eval_h("(cog-execute! (CollectionOf baskets-with-red-balls-only))");
	printf("Expecting red basket, got %s", red_set->to_string().c_str());

	TS_ASSERT_EQUALS(1, getarity(red_set));

	Handle redbask = as->add_node(CONCEPT_NODE, "reds basket");
	TS_ASSERT_EQUALS(redbask, red_set->getOutgoingAtom(0));

	// ----------------
	Handle red_n_yell = eval->eval_h("(cog-execute! (CollectionOf baskets-with-same-color))");
	printf("Expecting red and yellow, got %s", red_n_yell->to_string().c_str());

	TS_ASSERT_EQUALS(2, getarity(red_n_yell));

	Handle both =
		as->add_link(SET_LINK,
			as->add_node(CONCEPT_NODE, "reds basket"),
			as->add_node(CONCEPT_NODE, "yellows basket"));
	TS_ASSERT_EQUALS(red_n_yell, both);

	logger().debug("END TEST: %s", __FUNCTION__);
}

/*
 * Fancier AlwaysLink unit test. Much like the above, but with
 * more baskets.  This is testing the demo in the examples directory.
 */
void AlwaysUTest::test_more(void)
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle red_set = eval->eval_h("(cog-execute! (CollectionOf baskets-with-red-balls-only))");
	printf("Expecting two red baskets, got %s", red_set->to_string().c_str());

	TS_ASSERT_EQUALS(2, getarity(red_set));

	Handle both =
		as->add_link(SET_LINK,
			as->add_node(CONCEPT_NODE, "reds basket"),
			as->add_node(CONCEPT_NODE, "another red basket"));
	TS_ASSERT_EQUALS(both, red_set);

	// ----------------
	Handle red_n_yell = eval->eval_h("(cog-execute! (CollectionOf baskets-with-same-color))");
	printf("Expecting red and yellow, got %s", red_n_yell->to_string().c_str());

	TS_ASSERT_EQUALS(3, getarity(red_n_yell));

	Handle three =
		as->add_link(SET_LINK,
			as->add_node(CONCEPT_NODE, "reds basket"),
			as->add_node(CONCEPT_NODE, "another red basket"),
			as->add_node(CONCEPT_NODE, "yellows basket"));
	TS_ASSERT_EQUALS(red_n_yell, three);

	logger().debug("END TEST: %s", __FUNCTION__);
}