archived-php-src/ext/random/tests/03_randomizer/engine_unsafe_biased.phpt

--TEST--
Random: Randomizer: Heavily biased engines are detected and rejected
--FILE--
<?php

use Random\Engine;
use Random\Randomizer;

final class HeavilyBiasedEngine implements Engine
{
    public function generate(): string
    {
        return str_repeat("\xff", PHP_INT_SIZE);
    }
}

function randomizer(): Randomizer
{
    return new Randomizer(new HeavilyBiasedEngine());
}

try {
    var_dump(randomizer()->getInt(0, 1234));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->nextInt());
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(bin2hex(randomizer()->getBytes(1)));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->shuffleArray(range(1, 1234)));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->pickArrayKeys(range(1, 1234), 1));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->pickArrayKeys(range(1, 1234), 10));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->shuffleBytes('foobar'));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->getBytesFromString('123', 10));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

try {
    var_dump(randomizer()->getBytesFromString(str_repeat('a', 500), 10));
} catch (Random\BrokenRandomEngineError $e) {
    echo $e->getMessage(), PHP_EOL;
}

?>
--EXPECTF--
Failed to generate an acceptable random number in 50 attempts
int(%d)
string(2) "ff"
Failed to generate an acceptable random number in 50 attempts
Failed to generate an acceptable random number in 50 attempts
Failed to generate an acceptable random number in 50 attempts
Failed to generate an acceptable random number in 50 attempts
Failed to generate an acceptable random number in 50 attempts
Failed to generate an acceptable random number in 50 attempts