<?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);
*
*/

namespace oat\taoItems\test\integration;

use oat\generis\test\TestCase;
use DOMDocument;
use DOMException;
use DOMXPath;
use taoItems_helpers_Xhtml as taoItems_helpers_Xhtml;

/**
 * This class aims at testing tao_helpers_Xhtml.
 *
 * @author Jerome Bogaerts, <jerome@taotesting.com>
 * @package taoItems

 */
class XhtmlTestCase extends TestCase
{

    public function testGetScriptElements()
    {
        $file = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'samples' . DIRECTORY_SEPARATOR . 'xhtml' . DIRECTORY_SEPARATOR . 'raw.html';
        try {
            $dom = new DOMDocument('1.0', TAO_DEFAULT_ENCODING);
            if (@$dom->load($file)) {
                $this->assertEquals(2, count(taoItems_helpers_Xhtml::getScriptElements($dom, '/^jquery-/')));
                $this->assertEquals(0, count(taoItems_helpers_Xhtml::getScriptElements($dom, '/^jQuery-/')));
            } else {
                $this->assertTrue(false, "An error occured while loading '${file}'.");
            }
        } catch (DOMException $e) {
            $this->assertTrue(false, "An error occured while parsing '${file}'.");
        }
    }
    
    public function testHasScriptElements()
    {
        $file = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'samples' . DIRECTORY_SEPARATOR . 'xhtml' . DIRECTORY_SEPARATOR . 'raw.html';
        try {
            $dom = new DOMDocument('1.0', TAO_DEFAULT_ENCODING);
            if (@$dom->load($file)) {
                $this->assertNotEquals(taoItems_helpers_Xhtml::getScriptElements($dom, '/^jquery-/'), false);
                $this->assertNotNull(taoItems_helpers_Xhtml::getScriptElements($dom, '/^jquery-/'), false);
            } else {
                $this->assertTrue(false, "An error occured while loading '${file}'.");
            }
        } catch (DOMException $e) {
            $this->assertTrue(false, "An error occured while parsing '${file}'.");
        }
    }
    
    public function testRemoveScriptElements()
    {
        $file = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'samples' . DIRECTORY_SEPARATOR . 'xhtml' . DIRECTORY_SEPARATOR . 'raw.html';
        try {
            $dom = new DOMDocument('1.0', TAO_DEFAULT_ENCODING);
            if (@$dom->load($file)) {
                $this->assertEquals(2, taoItems_helpers_Xhtml::removeScriptElements($dom, '/^jquery-/'));
                $this->assertFalse(taoItems_helpers_Xhtml::hasScriptElements($dom, '/jquery/'));
            } else {
                $this->assertTrue(false, "An error occured while loading '${file}'.");
            }
        } catch (DOMException $e) {
            $this->assertTrue(false, "An error occured while parsing '${file}'.");
        }
    }
    
    public function testAddScriptElement()
    {
        $file = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'samples' . DIRECTORY_SEPARATOR . 'xhtml' . DIRECTORY_SEPARATOR . 'raw.html';
        try {
            $dom = new DOMDocument('1.0', TAO_DEFAULT_ENCODING);
            if (@$dom->load($file)) {
                // -- Append
                taoItems_helpers_Xhtml::addScriptElement($dom, 'scripts/taoMatching.js');
                $addedElements = taoItems_helpers_Xhtml::getScriptElements($dom, '/^taomatching.js/iu');
                $this->assertEquals(1, count($addedElements));
                $added = $addedElements[0];
                
                // Was it really appended?
                $xpath = new DOMXPath($dom);
                $heads = $xpath->query('/html/head');
                foreach ($heads as $head) {
                    $this->assertTrue($head->lastChild === $added);
                    break;
                }
                
                // -- Prepend
                taoItems_helpers_Xhtml::addScriptElement($dom, 'http://www.taotesting.com/scripts/wfapi.min.js', $append = false);
                $addedElements = taoItems_helpers_Xhtml::getScriptElements($dom, '/wfapi\.min/');
                $this->assertEquals(1, count($addedElements));
                $added = $addedElements[0];

                // Was it really prepended?
                $xpath = new DOMXPath($dom);
                $heads = $xpath->query('/html/head');
                foreach ($heads as $head) {
                    $children = $head->getElementsByTagName('script');
                    $this->assertTrue($children->item(0) === $added);
                }
            } else {
                $this->assertTrue(false, "An error occured while loading '${file}'.");
            }
        } catch (DOMException $e) {
            $this->assertTrue(false, "An error occured while parsing '${file}'.");
        }
    }
}