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<?php
declare(strict_types=1);
namespace Ramsey\Uuid\Test\Generator;
use Ramsey\Uuid\BinaryUtils;
use Ramsey\Uuid\Exception\NameException;
use Ramsey\Uuid\Generator\PeclUuidNameGenerator;
use Ramsey\Uuid\Test\TestCase;
use Ramsey\Uuid\Uuid;
use function hash;
use function pack;
use function substr;
use function substr_replace;
use function unpack;
class PeclUuidNameGeneratorTest extends TestCase
{
/**
* @param non-empty-string $ns
*
* @dataProvider provideNamesForHashingTest
* @requires extension uuid
*/
public function testPeclUuidNameGeneratorHashesName(string $ns, string $name, string $algorithm): void
{
$namespace = Uuid::fromString($ns);
$version = $algorithm === 'md5' ? 3 : 5;
$expectedBytes = substr(hash($algorithm, $namespace->getBytes() . $name, true), 0, 16);
// Need to add the version and variant, since ext-uuid already includes
// these in the values returned.
/** @var array $unpackedTime */
$unpackedTime = unpack('n*', substr($expectedBytes, 6, 2));
$timeHi = (int) $unpackedTime[1];
$timeHiAndVersion = pack('n*', BinaryUtils::applyVersion($timeHi, $version));
/** @var array $unpackedClockSeq */
$unpackedClockSeq = unpack('n*', substr($expectedBytes, 8, 2));
$clockSeqHi = (int) $unpackedClockSeq[1];
$clockSeqHiAndReserved = pack('n*', BinaryUtils::applyVariant($clockSeqHi));
$expectedBytes = substr_replace($expectedBytes, $timeHiAndVersion, 6, 2);
$expectedBytes = substr_replace($expectedBytes, $clockSeqHiAndReserved, 8, 2);
$generator = new PeclUuidNameGenerator();
$generatedBytes = $generator->generate($namespace, $name, $algorithm);
$this->assertSame(
$expectedBytes,
$generatedBytes,
'Expected: ' . bin2hex($expectedBytes) . '; Received: ' . bin2hex($generatedBytes)
);
}
/**
* @return array<array{ns: string, name: string, algorithm: string}>
*/
public function provideNamesForHashingTest(): array
{
return [
[
'ns' => Uuid::NAMESPACE_URL,
'name' => 'https://example.com/foobar',
'algorithm' => 'md5',
],
[
'ns' => Uuid::NAMESPACE_URL,
'name' => 'https://example.com/foobar',
'algorithm' => 'sha1',
],
[
'ns' => Uuid::NAMESPACE_OID,
'name' => '1.3.6.1.4.1.343',
'algorithm' => 'sha1',
],
[
'ns' => Uuid::NAMESPACE_OID,
'name' => '1.3.6.1.4.1.52627',
'algorithm' => 'md5',
],
[
'ns' => 'd988ae29-674e-48e7-b93c-2825e2a96fbe',
'name' => 'foobar',
'algorithm' => 'sha1',
],
];
}
public function testGenerateThrowsException(): void
{
$namespace = Uuid::fromString('cd998804-c661-4264-822c-00cada75a87b');
$generator = new PeclUuidNameGenerator();
$this->expectException(NameException::class);
$this->expectExceptionMessage(
'Unable to hash namespace and name with algorithm \'aBadAlgorithm\''
);
/** @phpstan-ignore-next-line */
$generator->generate($namespace, 'a test name', 'aBadAlgorithm');
}
}
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