<?php
/**
 * Copyright 2017 Facebook, Inc.
 *
 * You are hereby granted a non-exclusive, worldwide, royalty-free license to
 * use, copy, modify, and distribute this software in source code or binary
 * form for use in connection with the web services and APIs provided by
 * Facebook.
 *
 * As with any software that integrates with the Facebook platform, your use
 * of this software is subject to the Facebook Developer Principles and
 * Policies [http://developers.facebook.com/policy/]. This copyright notice
 * shall be included in all copies or substantial portions of the software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */
namespace Facebook\Tests\PseudoRandomString;

use Facebook\PseudoRandomString\UrandomPseudoRandomStringGenerator;

class UrandomPseudoRandomStringGeneratorTest extends \PHPUnit_Framework_TestCase
{
    public function testCanGenerateRandomStringOfArbitraryLength()
    {
        if (ini_get('open_basedir')) {
            $this->markTestSkipped(
                'Cannot test /dev/urandom generator due to open_basedir constraint.'
            );
        }

        if (!is_readable('/dev/urandom')) {
            $this->markTestSkipped(
                '/dev/urandom not found or is not readable.'
            );
        }

        $prsg = new UrandomPseudoRandomStringGenerator();
        $randomString = $prsg->getPseudoRandomString(10);

        $this->assertEquals(1, preg_match('/^([0-9a-f]+)$/', $randomString));
        $this->assertEquals(10, mb_strlen($randomString));
    }
}