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<?php |
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declare(strict_types=1); |
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/** |
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* Created by PhpStorm. |
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* User: benedikt |
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* Date: 10/1/17 |
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* Time: 2:08 PM |
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*/ |
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namespace Tfboe\FmLib\Tests\Unit\Helpers; |
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use Tfboe\FmLib\Helpers\Random; |
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use Tfboe\FmLib\Tests\Helpers\UnitTestCase; |
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/** |
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* Class HandlerTest |
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* @package Tfboe\FmLib\Tests\Unit\Exceptions |
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*/ |
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class RandomTest extends UnitTestCase |
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{ |
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//<editor-fold desc="Public Methods"> |
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/** |
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* @covers \Tfboe\FmLib\Helpers\Random::__construct |
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*/ |
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public function testConstruct() |
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{ |
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/** @noinspection SpellCheckingInspection */ |
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$hex = "0abce081f"; |
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$random = new Random($hex); |
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self::assertInstanceOf(Random::class, $random); |
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} |
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/** |
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* @covers \Tfboe\FmLib\Helpers\Random::extractEntropy |
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* @covers \Tfboe\FmLib\Helpers\Random::countBits |
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* @uses \Tfboe\FmLib\Exceptions\Internal::assert |
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* @uses \Tfboe\FmLib\Helpers\Random::__construct |
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* @uses \Tfboe\FmLib\Helpers\Random::extractEntropyByBits |
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*/ |
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public function testEntropy() |
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{ |
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/** @noinspection SpellCheckingInspection */ |
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$hex = "0abce081f"; |
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$random = new Random($hex); |
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$res1 = $random->extractEntropy(799); |
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$random2 = new Random($hex); |
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$res2 = $random2->extractEntropy(1023); |
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self::assertEquals($res1, $res2 % 800); |
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$random3 = new Random($hex); |
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$res3 = $random3->extractEntropy(523, -500); |
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self::assertEquals($res2 - 500, $res3); |
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$r1 = $random->extractEntropy(1000000000); |
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$r2 = $random2->extractEntropy(1000000000); |
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$r3 = $random3->extractEntropy(1000000000); |
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self::assertEquals($r1, $r2); |
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self::assertEquals($r2, $r3); |
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} |
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/** |
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* @covers \Tfboe\FmLib\Helpers\Random::extractEntropyByBits |
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* @uses \Tfboe\FmLib\Helpers\Random::__construct |
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* @uses \Tfboe\FmLib\Exceptions\Internal::assert |
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*/ |
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public function testExtractEntropyByBits() |
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{ |
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/** @noinspection SpellCheckingInspection */ |
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$hex = "0abce081f"; |
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$random = new Random($hex); |
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$res1 = $random->extractEntropyByBits(10); |
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self::assertGreaterThanOrEqual(0, $res1); |
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self::assertLessThan(1024, $res1); |
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$res2 = $random->extractEntropyByBits(1); |
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self::assertGreaterThanOrEqual(0, $res2); |
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self::assertLessThan(2, $res2); |
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$random2 = new Random($hex); |
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$res = $random2->extractEntropyByBits(11); |
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self::assertEquals($res1 * 2 + $res2, $res); |
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self::assertEquals($random->extractEntropyByBits(100), $random2->extractEntropyByBits(100)); |
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//now the entropy must be empty |
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self::assertEquals(0, $random->extractEntropyByBits(100)); |
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self::assertEquals(0, $random2->extractEntropyByBits(100)); |
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/** @noinspection SpellCheckingInspection */ |
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$random3 = new Random("123456789abcdef0"); |
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//if we have bad luck the following may be wrong (probability 1/1024) |
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self::assertNotEquals($res, $random3->extractEntropyByBits(11)); |
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} |
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/** |
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* @covers \Tfboe\FmLib\Helpers\Random::extractEntropy |
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* @covers \Tfboe\FmLib\Helpers\Random::countBits |
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* @uses \Tfboe\FmLib\Exceptions\Internal::assert |
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* @uses \Tfboe\FmLib\Helpers\Random::__construct |
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* @uses \Tfboe\FmLib\Helpers\Random::extractEntropyByBits |
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*/ |
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public function testFullRandomInteger() |
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{ |
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/** @noinspection SpellCheckingInspection */ |
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$random = new Random("08791234abcdef778899aeef87224effffffeeee123234641aaa"); |
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self::assertIsInt($random->extractEntropy(PHP_INT_MAX, PHP_INT_MIN)); |
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self::assertIsInt($random->extractEntropy(PHP_INT_MAX - 1, PHP_INT_MIN + 1)); |
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/** @noinspection SpellCheckingInspection */ |
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$random = new Random("FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF"); |
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self::assertEquals(PHP_INT_MAX, $random->extractEntropy(PHP_INT_MAX, PHP_INT_MIN)); |
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self::assertEquals(PHP_INT_MAX - 13, $random->extractEntropy(PHP_INT_MAX - 1, PHP_INT_MIN + 1)); |
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} |
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/** |
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* @covers \Tfboe\FmLib\Helpers\Random::stringToRandom |
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* @uses \Tfboe\FmLib\Helpers\Random::__construct |
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*/ |
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public function testStringToRandom() |
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{ |
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$message = "message"; |
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$i1 = Random::stringToRandom($message); |
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self::assertEquals($i1, Random::stringToRandom($message)); |
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self::assertNotEquals($i1, Random::stringToRandom("Message")); |
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} |
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//</editor-fold desc="Public Methods"> |
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} |
tfboe /
fm-lib
