<?php
/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * 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 General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
 *               2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
 *               2017 (update and modification) Open Assessment Technologies SA (under the project TAO-PRODUCT);
 */

error_reporting(E_ALL);

use oat\generis\model\RulesRdf;
use oat\generis\test\GenerisPhpUnitTestRunner;

/**
 *
 */
class ExpressionFactoryTestCase extends GenerisPhpUnitTestRunner
{

    /**
     *
     */
    public function testCreateTerminalExpression()
    {
        $constantResource = core_kernel_rules_TermFactory::createConst('test1');
        $terminalExpression = core_kernel_rules_ExpressionFactory::createTerminalExpression($constantResource);
        $terminalExpressionProperty = new core_kernel_classes_Property(RulesRdf::PROPERTY_TERMINAL_EXPRESSION, __METHOD__);
        $terminalExpressionVal = $terminalExpression->getOnePropertyValue($terminalExpressionProperty);
        $this->assertIsA($terminalExpressionVal, 'core_kernel_classes_Resource');
        $this->assertEquals($terminalExpressionVal->getUri(), $constantResource->getUri());

        $constantResource->delete();
        $terminalExpression->delete();
    }

    /**
     *
     */
    public function testCreateRecursiveExpression()
    {

        $constantResource1 = core_kernel_rules_TermFactory::createConst('test1');
        $constantResource2 = core_kernel_rules_TermFactory::createConst('test2');

        $terminalExpression1 = core_kernel_rules_ExpressionFactory::createTerminalExpression($constantResource1);
        $terminalExpression2 = core_kernel_rules_ExpressionFactory::createTerminalExpression($constantResource2);

        $equalsOperator = new core_kernel_classes_Resource(RulesRdf::INSTANCE_EQUALS_OPERATOR_URI);
        $finalExpression = core_kernel_rules_ExpressionFactory::createRecursiveExpression($terminalExpression1, $terminalExpression2, $equalsOperator);

        //prop
        $terminalExpressionProperty = new core_kernel_classes_Property(RulesRdf::PROPERTY_TERMINAL_EXPRESSION, __METHOD__);
        $logicalOperatorProperty = new core_kernel_classes_Property(RulesRdf::PROPERTY_HASLOGICALOPERATOR, __METHOD__);
        $firstExpressionProperty = new core_kernel_classes_Property(RulesRdf::PROPERTY_FIRST_EXPRESSION, __METHOD__);
        $secondExpressionProperty = new core_kernel_classes_Property(RulesRdf::PROPERTY_SECOND_EXPRESSION, __METHOD__);

        //final expr
        $finalExpressionVal = $finalExpression->getOnePropertyValue($terminalExpressionProperty);
        $this->assertIsA($finalExpressionVal, 'core_kernel_classes_Resource');
        $this->assertEquals($finalExpressionVal->getUri(), RulesRdf::INSTANCE_EMPTY_TERM_URI);

        //operator
        $logicalOperatorVal = $finalExpression->getOnePropertyValue($logicalOperatorProperty);
        $this->assertIsA($logicalOperatorVal, 'core_kernel_classes_Resource');
        $this->assertEquals($logicalOperatorVal->getUri(), RulesRdf::INSTANCE_EQUALS_OPERATOR_URI);

        //first expr
        $firstExpressionVal = $finalExpression->getOnePropertyValue($firstExpressionProperty);
        $this->assertIsA($firstExpressionVal, 'core_kernel_classes_Resource');
        $this->assertEquals($firstExpressionVal->getUri(), $terminalExpression1->getUri());

        //Second expr
        $secondExpressionVal = $finalExpression->getOnePropertyValue($secondExpressionProperty);
        $this->assertIsA($secondExpressionVal, 'core_kernel_classes_Resource');
        $this->assertEquals($secondExpressionVal->getUri(), $terminalExpression2->getUri());

        $constantResource1->delete();
        $constantResource2->delete();
        $terminalExpression1->delete();
        $terminalExpression2->delete();
        $finalExpression->delete();
    }
}