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.
namespace core;
/**
* A set of tests for some of the gd functionality within Moodle.
*
* @package core
* @category test
* @copyright 2015 Andrew Nicols
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class gdlib_test extends \basic_testcase {
private $fixturepath = null;
public function setUp(): void {
$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']);
}
}