opencog-atomspace / tests / atoms / core / CondLinkUTest.cxxtest

/*
 * tests/atoms/core/CondLinkUTest.cxxtest
 *
 * Copyright (C) 2019 Kasim Ebrahim
 * 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 CondLinkUTest : public CxxTest::TestSuite
{
private:
	AtomSpacePtr as;
	SchemeEval *eval;

public:
	CondLinkUTest(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 "\")");
	}

	~CondLinkUTest()
	{
		// 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_singleton(void);
	void test_nondefault_exp(void);
	void test_wrapped_exp();
	void test_grounded_cond();
	void xxxtest_knobs();
};

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

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

void CondLinkUTest::test_singleton()
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle result = eval->eval_h("(cog-execute! single)");

	Handle baz = eval->eval_h("(Number -1)");
	printf("got %s", result->to_string().c_str());
	printf("expected %s\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

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

void CondLinkUTest::test_nondefault_exp()
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle result = eval->eval_h("(cog-execute! nondefault)");

	Handle baz = eval->eval_h("(Number 5)");
	printf("got %s", result->to_string().c_str());
	printf("expected %s\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

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

void CondLinkUTest::test_wrapped_exp()
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle result = eval->eval_h("(cog-execute! listwrapped)");

	Handle baz = eval->eval_h("(NumberNode 1)");
	printf("got %s", result->to_string().c_str());
	printf("expected %s\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

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

void CondLinkUTest::test_grounded_cond()
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle result = eval->eval_h("(cog-execute! grounded-cond)");

	Handle baz = eval->eval_h("(NumberNode 2)");
	printf("got %s", result->to_string().c_str());
	printf("expected %s\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

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

// XXX FIXME Disable this unit test. It uses CondLink with a
// beguiling but ultimately poor syntax: it tries to assemble
// boolean trees containing elements that are not actually
// executable. The idea is pretty: Assemble arbitrary trees
// of some sort, by indicating variabl regions with "knobs".
// and then generate the final tree based on knob settings.
// But, to do this in generality, we probably need to invent
// an explicit KnobLink, instead of overloading CondLink with
// this special meaning. So: disable this unit test. It breaks
// asmoses, but no one is using asmoses, so I don't care. If
// someone needs as-moses again, well, we will have to invent a
// KnobLink. Or possibly do the same thing with a FilterLink ???
// There's always the butt-ugly solution of using QuoteLink...
void CondLinkUTest::xxxtest_knobs()
{
	logger().debug("BEGIN TEST: %s", __FUNCTION__);

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

	Handle result = eval->eval_h("(cog-execute! put-00)");
	result = HandleCast(result->execute(as.get()));

	Handle baz = eval->eval_h("(Not (And (Predicate \"$a\") (Not (Predicate \"$b\"))))");
	printf("p00 got %s\n", result->to_string().c_str());
	printf("p00 expected %s\n\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

	result = eval->eval_h("(cog-execute! put-01)");
	result = HandleCast(result->execute(as.get()));

	baz = eval->eval_h("(Not (And (Predicate \"$a\") (Predicate \"$b\")))");
	printf("p01 got %s\n", result->to_string().c_str());
	printf("p01 expected %s\n\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

	result = eval->eval_h("(cog-execute! put-10)");
	result = HandleCast(result->execute(as.get()));

	baz = eval->eval_h("(And (Predicate \"$a\") (Not (Predicate \"$b\")))");
	printf("p10 got %s\n", result->to_string().c_str());
	printf("p10 expected %s\n\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

	result = eval->eval_h("(cog-execute! put-11)");
	result = HandleCast(result->execute(as.get()));

	baz = eval->eval_h("(And (Predicate \"$a\") (Predicate \"$b\"))");
	printf("p11 got %s\n", result->to_string().c_str());
	printf("p11 expected %s\n\n", baz->to_string().c_str());

	TS_ASSERT(result == baz);

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