php-src/ext/gd/tests/imagegammacorrect_variation1.phpt
Christoph M. Becker dc09f30933 A picture is worth a thousand message digests
The bundled GD test suites makes heavy use of md5() to verify the result
of drawing operations. This leads to fragile tests (even a slight change
in a PNG header would cause failure, and of course there is the
possibility of collisions), and even worse, eventual test failures are
rather unrevealing.

Therefore we replace all md5() verification with a simplistic
test_image_equals_file(), which is basically a simplified port of libgd's
gdTestImageCompareToFile(), adapted to the needs of PHPTs.

In the long run better tests helpers should be introduced (see also
<http://news.php.net/php.internals/94081>), but for now this solution
is preferable over the former.

(cherry picked from commit 24f9e96792)
2016-09-11 12:56:53 +02:00

32 lines
885 B
PHP

--TEST--
Testing imagegammacorrect() of GD library with non TrueColor image
--CREDITS--
Rafael Dohms <rdohms [at] gmail [dot] com>
#testfest PHPSP on 2009-06-20
--SKIPIF--
<?php
if (!extension_loaded("gd")) die("skip GD not present");
if (!GD_BUNDLED && version_compare(GD_VERSION, '2.2.2', '<')) {
die("skip test requires GD 2.2.2 or higher");
}
?>
--FILE--
<?php
$image = imagecreate(150, 150);
$grey = imagecolorallocate($image,6,6,6);
$gray = imagecolorallocate($image,15,15,15);
$half = imagefilledarc ( $image, 75, 75, 70, 70, 0, 180, $grey, IMG_ARC_PIE );
$half2 = imagefilledarc ( $image, 75, 75, 70, 70, 0, -180, $gray, IMG_ARC_PIE );
$gamma = imagegammacorrect($image, 1, 5);
var_dump((bool) $gamma);
include_once __DIR__ . '/func.inc';
test_image_equals_file(__DIR__ . '/imagegammacorrect_variation1.png', $image);
?>
--EXPECT--
bool(true)
The images are equal.