<?php
declare(strict_types=1);
namespace ParagonIE\ConstantTime\Tests;
use Exception;
use InvalidArgumentException;
use PHPUnit\Framework\TestCase;
use ParagonIE\ConstantTime\Base64UrlSafe;
use ParagonIE\ConstantTime\Binary;
use RangeException;
use TypeError;
/**
* Class Base64UrlSafeTest
*/
class Base64UrlSafeTest extends TestCase
{
use CanonicalTrait;
/**
* @covers Base64UrlSafe::encode()
* @covers Base64UrlSafe::decode()
*
* @throws Exception
* @throws TypeError
*/
public function testRandom()
{
for ($i = 1; $i < 32; ++$i) {
for ($j = 0; $j < 50; ++$j) {
$random = \random_bytes($i);
$enc = Base64UrlSafe::encode($random);
$this->assertSame(
$random,
Base64UrlSafe::decode($enc)
);
$this->assertSame(
\strtr(\base64_encode($random), '+/', '-_'),
$enc
);
$unpadded = \rtrim($enc, '=');
$this->assertSame(
$unpadded,
Base64UrlSafe::encodeUnpadded($random)
);
$this->assertSame(
$random,
Base64UrlSafe::decode($unpadded)
);
}
}
$random = \random_bytes(1 << 20);
$enc = Base64UrlSafe::encode($random);
$this->assertTrue(Binary::safeStrlen($enc) > 65536);
$this->assertSame(
$random,
Base64UrlSafe::decode($enc)
);
$this->assertSame(
\strtr(\base64_encode($random), '+/', '-_'),
$enc
);
}
public function testDecodeNoPadding()
{
Base64UrlSafe::decodeNoPadding('0w');
$this->expectException(InvalidArgumentException::class);
Base64UrlSafe::decodeNoPadding('0w==');
}
/**
* @dataProvider canonicalDataProvider
*/
public function testNonCanonical(string $input)
{
$w = Base64UrlSafe::encodeUnpadded($input);
Base64UrlSafe::decode($w);
Base64UrlSafe::decode($w, true);
// Mess with padding:
$x = $this->increment($w);
Base64UrlSafe::decode($x);
// Should throw in strict mode:
$this->expectException(RangeException::class);
Base64UrlSafe::decode($x, true);
}
protected function getNextChar(string $c): string
{
return strtr(
$c,
'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_',
'BCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_A'
);
}
}
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