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<?php
/**
* @author Andreas Fischer <bantu@phpbb.com>
* @copyright 2014 Andreas Fischer
* @license http://www.opensource.org/licenses/mit-license.html MIT License
*/
namespace phpseclib3\Tests\Unit\Crypt;
use phpseclib3\Crypt\Random;
use phpseclib3\Tests\PhpseclibTestCase;
class RandomTest extends PhpseclibTestCase
{
public function stringLengthData()
{
return array_map([$this, 'wrap'], [
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 17, 19, 20, 23, 29, 31, 37,
41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 111, 128, 1000,
1024, 10000, 12345, 100000, 123456
]);
}
/** @dataProvider stringLengthData */
public function testStringLength($length)
{
$this->assertSame(
$length,
strlen(Random::string($length)),
'Failed asserting that a string of expected length was generated.'
);
}
/**
* Takes a set of random values of length 128 bits and asserts all taken
* values are unique.
*/
public function testStringUniqueness()
{
$values = [];
for ($i = 0; $i < 10000; ++$i) {
$rand = Random::string(16);
$this->assertSame(16, strlen($rand));
$this->assertArrayNotHasKey(
$rand,
$values,
'Failed asserting that generated value does not exist in set.'
);
$values[$rand] = true;
}
}
protected function wrap($x)
{
// array() is not a function, but $this->wrap() is.
return [$x];
}
}
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