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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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.
//
// Moodle 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 Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Test gd functionality.
*
* @package core
* @category phpunit
* @copyright 2015 Andrew Nicols <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* A set of tests for some of the gd functionality within Moodle.
*
* @package core
* @category phpunit
* @copyright 2015 Andrew Nicols <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class core_gdlib_testcase extends basic_testcase {
private $fixturepath = null;
public function setUp() {
$this->fixturepath = __DIR__ . DIRECTORY_SEPARATOR . 'fixtures' . DIRECTORY_SEPARATOR;
}
public function test_generate_image_thumbnail() {
global $CFG;
require_once($CFG->libdir . '/gdlib.php');
// Test with meaningless data.
// Now use a fixture.
$pngpath = $this->fixturepath . 'gd-logo.png';
$pngthumb = generate_image_thumbnail($pngpath, 24, 24);
$this->assertTrue(is_string($pngthumb));
// And check that the generated image was of the correct proportions and mimetype.
$imageinfo = getimagesizefromstring($pngthumb);
$this->assertEquals(24, $imageinfo[0]);
$this->assertEquals(24, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
}
public function test_generate_image_thumbnail_from_string() {
global $CFG;
require_once($CFG->libdir . '/gdlib.php');
// Test with meaningless data.
// First empty values.
$this->assertFalse(generate_image_thumbnail_from_string('', 24, 24));
$this->assertFalse(generate_image_thumbnail_from_string('invalid', 0, 24));
$this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 0));
// Now an invalid string.
$this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 24));
// Now use a fixture.
$pngpath = $this->fixturepath . 'gd-logo.png';
$pngdata = file_get_contents($pngpath);
$pngthumb = generate_image_thumbnail_from_string($pngdata, 24, 24);
$this->assertTrue(is_string($pngthumb));
// And check that the generated image was of the correct proportions and mimetype.
$imageinfo = getimagesizefromstring($pngthumb);
$this->assertEquals(24, $imageinfo[0]);
$this->assertEquals(24, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
}
public function test_resize_image() {
global $CFG;
require_once($CFG->libdir . '/gdlib.php');
$pngpath = $this->fixturepath . 'gd-logo.png';
// Preferred height.
$newpng = resize_image($pngpath, null, 24);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(89, $imageinfo[0]);
$this->assertEquals(24, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
// Preferred width.
$newpng = resize_image($pngpath, 100, null);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(100, $imageinfo[0]);
$this->assertEquals(26, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
// Preferred width and height.
$newpng = resize_image($pngpath, 50, 50);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(50, $imageinfo[0]);
$this->assertEquals(13, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
}
public function test_resize_image_from_image() {
global $CFG;
require_once($CFG->libdir . '/gdlib.php');
$pngpath = $this->fixturepath . 'gd-logo.png';
$origimageinfo = getimagesize($pngpath);
$imagecontent = file_get_contents($pngpath);
// Preferred height.
$imageresource = imagecreatefromstring($imagecontent);
$newpng = resize_image_from_image($imageresource, $origimageinfo, null, 24);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(89, $imageinfo[0]);
$this->assertEquals(24, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
// Preferred width.
$imageresource = imagecreatefromstring($imagecontent);
$newpng = resize_image_from_image($imageresource, $origimageinfo, 100, null);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(100, $imageinfo[0]);
$this->assertEquals(26, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
// Preferred width and height.
$imageresource = imagecreatefromstring($imagecontent);
$newpng = resize_image_from_image($imageresource, $origimageinfo, 50, 50);
$this->assertTrue(is_string($newpng));
$imageinfo = getimagesizefromstring($newpng);
$this->assertEquals(50, $imageinfo[0]);
$this->assertEquals(13, $imageinfo[1]);
$this->assertEquals('image/png', $imageinfo['mime']);
}
}