<?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 OperationTest extends GenerisPhpUnitTestRunner
{


    public function setUp(): void
    {
        GenerisPhpUnitTestRunner::initTest();
    }

    public function testEvaluate()
    {
        $constant5 = core_kernel_rules_TermFactory::createConst('5');
        $constant12 = core_kernel_rules_TermFactory::createConst('12');

        //5 + 12
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant5,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_ADD)
        );
        $result = $operation->evaluate();
        $this->assertIsA($result, 'core_kernel_classes_Literal');
        $this->assertEquals($result->literal, '17');

        //5 - 12
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant5,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_MINUS)
        );
        $result = $operation->evaluate();
        $this->assertIsA($result, 'core_kernel_classes_Literal');
        $this->assertEquals($result->literal, '-7');

        //5 * 12
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant5,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_MULTIPLY)
        );
        $result = $operation->evaluate();
        $this->assertIsA($result, 'core_kernel_classes_Literal');
        $this->assertEquals($result->literal, '60');

        //60 / 12
        $constant60 = core_kernel_rules_TermFactory::createConst('60');
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant60,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_DIVISION)
        );
        $result = $operation->evaluate();
        $this->assertIsA($result, 'core_kernel_classes_Literal');
        $this->assertEquals($result->literal, '5');

        // 60 concat 12
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant60,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_CONCAT)
        );
        $result = $operation->evaluate();
        $this->assertIsA($result, 'core_kernel_classes_Literal');
        $this->assertEquals($result->literal, '60 12');

        // raise excption bad operator
        $operation = core_kernel_rules_OperationFactory::createOperation(
            $constant60,
            $constant12,
            new core_kernel_classes_Resource(RulesRdf::INSTANCE_OPERATOR_UNION)
        );

        try {
            $operation->evaluate();
            $this->fail('should raise exception : problem evaluating operation, operator do not match with operands');
        } catch (common_Exception $e) {
            $this->assertEquals($e->getMessage(), 'problem evaluating operation, operator do not match with operands');
        }


        $constant60->delete();
        $constant5->delete();
        $constant12->delete();
        $operation->delete();
    }
}