Adjust copyrights years

<?php
/**
 * SeekQuarry/Yioop --
 * Open Source Pure PHP Search Engine, Crawler, and Indexer
 *
 * Copyright (C) 2009 - 2018  Chris Pollett chris@pollett.org
 *
 * LICENSE:
 *
 * 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, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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, see <https://www.gnu.org/licenses/>.
 *
 * END LICENSE
 *
 * @author Vijeth Patil vijeth.patil@gmail.coms
 * @license https://www.gnu.org/licenses/ GPL3
 * @link https://www.seekquarry.com/
 * @copyright 2009 - 2018
 * @filesource
 */
namespace seekquarry\yioop\tests;

use seekquarry\yioop\configs as C;
use seekquarry\yioop\library as L;
use seekquarry\yioop\library\CrawlConstants;
use seekquarry\yioop\library\processors\EpubProcessor;
use seekquarry\yioop\library\UnitTest;

/**
 * UnitTest for the EpubProcessor class. An EpubProcessor is used to process
 * a .epub (ebook publishing standard) file and extract summary from it. This
 * class tests the processing of an .epub file format by EpubProcessor.
 *
 *
 * @author Vijeth Patil
 */
class EpubProcessorTest extends UnitTest implements CrawlConstants
{
    /**
     * Creates a new EpubProcessor object so that
     * we can process an .epub format file.
     */
    public function setUp()
    {
        $epub_object = new EpubProcessor();
        $url = "http://www.yioop.com/TestEpubYioop.epub";
        $filename = C\PARENT_DIR."/tests/test_files/TestEpubYioop.epub";
        $page = file_get_contents($filename);
        $summary = $epub_object->process($page, $url);
        $this->test_objects['summary'] = $summary;
    }
    /**
     * Delete any files associated with our test on EpubProcessor
     */
    public function tearDown()
    {
    }
    /**
     * Test case to check whether the title of the epub document
     * is retrieved correctly.
     */
    public function testEpubTitleTestCase()
    {
        $m = $this->test_objects['summary'];
        $x = $m[self::TITLE];
        $correct_title = "The Test and Textbook for yioop";
        $description = "Test Passed with correct title";
        $this->assertEqual($x, $correct_title, $description);
    }
    /**
     * Test case to check whether the language of the document is
     * retrieved correctly.
     */
    public function testEpubLangTestCase()
    {
        $m = $this->test_objects['summary'] ;
        $x = $m[self::LANG];
        $correct_language = "en";
        $description = "Test Passed with correct Language";
        $this->assertEqual($x, $correct_language, $description);
    }
    /**
     * Test case to check whether the description of the document is
     * not empty.
     */
    public function testEpubDescriptionTestCase()
    {
        $m = $this->test_objects['summary'] ;
        $x = $m[self::DESCRIPTION];
        $description = "Test Passed with Description information not empty";
        $this->assertTrue($x, $description);
    }
}