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<?php
declare(strict_types=1);
namespace WebThumbnailer\Utils;
use WebThumbnailer\Exception\ImageConvertException;
use WebThumbnailer\Exception\NotAnImageException;
use WebThumbnailer\TestCase;
/**
* Test image utils methods, especially thumbnail rendering.
*/
class ImageUtilsTest extends TestCase
{
/**
* @var string Image as string.
*/
public static $imageSource;
/**
* @var string Working directory path.
*/
public static $WORKDIR =
__DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'workdir' . DIRECTORY_SEPARATOR;
/**
* Regenerate the image before every tests.
*/
public function setUp(): void
{
// From http://php.net/imagecreatefromstring
$data = 'iVBORw0KGgoAAAANSUhEUgAAABwAAAASCAMAAAB/2U7WAAAABl'
. 'BMVEUAAAD///+l2Z/dAAAASUlEQVR4XqWQUQoAIAxC2/0vXZDr'
. 'EX4IJTRkb7lobNUStXsB0jIXIAMSsQnWlsV+wULF4Avk9fLq2r'
. '8a5HSE35Q3eO2XP1A1wQkZSgETvDtKdQAAAABJRU5ErkJggg==';
self::$imageSource = base64_decode($data);
}
/**
* Remove the test image in workdir after every test.
* Ignore errors.
*/
public function tearDown(): void
{
@unlink(self::$WORKDIR . 'file1.png');
}
/**
* Test generating valid thumbnails.
*/
public function testGenerateThumbnail(): void
{
$path = self::$WORKDIR . 'file1.png';
// Original size.
ImageUtils::generateThumbnail(self::$imageSource, $path, 28, 18);
$im = imagecreatefromjpeg($path);
$this->assertEquals(28, imagesx($im));
$this->assertEquals(18, imagesy($im));
unlink($path);
// Reduce size.
ImageUtils::generateThumbnail(self::$imageSource, $path, 14, 9);
$im = imagecreatefromjpeg($path);
$this->assertEquals(14, imagesx($im));
$this->assertEquals(9, imagesy($im));
unlink($path);
// Bigger size: must be changed to original size.
ImageUtils::generateThumbnail(self::$imageSource, $path, 56, 36);
$im = imagecreatefromjpeg($path);
$this->assertEquals(28, imagesx($im));
$this->assertEquals(18, imagesy($im));
unlink($path);
// Only specify width.
ImageUtils::generateThumbnail(self::$imageSource, $path, 14, 0);
$im = imagecreatefromjpeg($path);
$this->assertEquals(14, imagesx($im));
$this->assertEquals(9, imagesy($im));
unlink($path);
// Only specify heigth.
ImageUtils::generateThumbnail(self::$imageSource, $path, 0, 9);
$im = imagecreatefromjpeg($path);
$this->assertEquals(14, imagesx($im));
$this->assertEquals(9, imagesy($im));
unlink($path);
}
/**
* Generate a thumbnail into a non existent folder => Exception.
*/
public function testGenerateThumbnailUnwritable(): void
{
$this->expectException(\Exception::class);
$this->expectExceptionMessage('Target file is not writable.');
$path = self::$WORKDIR . 'nope' . DIRECTORY_SEPARATOR . 'file';
@ImageUtils::generateThumbnail(self::$imageSource, $path, 28, 18);
}
/**
* Generate a thumbnail from a string which is not an image => NotAnImageException.
*/
public function testGenerateThumbnailNotAnImage(): void
{
$this->expectException(NotAnImageException::class);
$path = self::$WORKDIR . 'file1.png';
ImageUtils::generateThumbnail('virus.exe', $path, 28, 18);
}
/**
* Generate a thumbnail with bad sizes => Exception.
*/
public function testGenerateThumbnailBadSize(): void
{
$this->expectException(ImageConvertException::class);
$this->expectExceptionMessage('Height and width must be zero or positive');
$path = self::$WORKDIR . 'file1.png';
@ImageUtils::generateThumbnail(self::$imageSource, $path, -1, -1);
}
/**
* Generate a thumbnail with bad sizes (Double 0) => Exception.
*/
public function testGenerateThumbnailBadSizeDoubleZero(): void
{
$this->expectException(\Exception::class);
$this->expectExceptionMessage('At least maxwidth or maxheight needs to be defined.');
$path = self::$WORKDIR . 'file1.png';
@ImageUtils::generateThumbnail(self::$imageSource, $path, 0, 0);
}
/**
* Check that a string is an image.
*/
public function testIsStringImageTrue(): void
{
$this->assertTrue(ImageUtils::isImageString(self::$imageSource));
}
/**
* Check that a string is not an image.
*/
public function testIsStringImageFalse(): void
{
$this->assertFalse(ImageUtils::isImageString('string'));
}
}
|
