LegacyImageConversionTest.php

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<?php

namespace ILIAS\Filesystem\Util;

use PHPUnit\Framework\Attributes\DataProvider;
use ILIAS\Filesystem\Util\Convert\LegacyImages;
use PHPUnit\Framework\TestCase;

class LegacyImageConversionTest extends TestCase
{
    private LegacyImages $images;


    protected function setUp(): void
    {
        $this->checkImagick();
        $this->images = new LegacyImages();
    }


    public static function someDefinitions(): \Iterator
    {
        yield [100, 100, 'jpg', 'image/jpeg'];
        yield [256, 25, 'jpg', 'image/jpeg'];
        yield [1024, 5, 'jpg', 'image/jpeg'];
        yield [128, 10, 'jpg', 'image/jpeg'];
        yield [895, 22, 'png', 'image/png'];
        yield [86, 4, 'png', 'image/png'];
        yield [147, 8, 'png', 'image/png'];
        yield [1000, 10, 'png', 'image/png'];
    }

    #[DataProvider('someDefinitions')]
    public function testImageThumbnailActualImage(
        int $expected_height,
        int $expected_quality,
        string $format,
        string $expected_mime_type
    ): void {
        $img = __DIR__ . '/img/robot.jpg';
        $this->assertFileExists($img);

        $temp_file = tempnam(sys_get_temp_dir(), 'img');

        $thumbnail = $this->images->thumbnail(
            $img,
            $temp_file,
            $expected_height,
            $format,
            $expected_quality
        );

        $this->assertEquals($temp_file, $thumbnail);

        $test_image = new \Imagick($thumbnail);

        // PNGs do not have a quality setting which can be read by getImageCompressionQuality()
        if ($format === 'png') {
            $expected_quality = 0;
        }

        $this->assertSame($expected_quality, $test_image->getImageCompressionQuality());
        $this->assertSame($expected_height, $test_image->getImageHeight());
        $this->assertSame((int) round($expected_height * 0.75), $test_image->getImageWidth());
        unlink($temp_file);
    }

    protected function checkImagick(): void
    {
        if (!class_exists('Imagick')) {
            $this->markTestSkipped('Imagick not installed');
        }
    }
}