Xes
73154ae174
Fuente: https://github.com/chamilo/chamilo-lms/releases/download/v1.11.40/chamilo-1.11.40.zip sha256: 1cf4bf2cc7bae1ef1a1eff643235db1d552f78ddf4b6dd1e2d2dac9868679439 Snapshot independiente (rama huerfana); diffable vs 1.11.38. vendor incluido.
111 lines
3.6 KiB
PHP
111 lines
3.6 KiB
PHP
<?php
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/**
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* BaconQrCode
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*
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* @link http://github.com/Bacon/BaconQrCode For the canonical source repository
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* @copyright 2013 Ben 'DASPRiD' Scholzen
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* @license http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
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*/
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namespace BaconQrCode\Common;
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use PHPUnit_Framework_TestCase as TestCase;
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use SplFixedArray;
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class ReedSolomonTest extends TestCase
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{
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public static function tabProvider()
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{
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return array(
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array(2, 0x7, 1, 1, 1),
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array(3, 0xb, 1, 1, 2),
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array(4, 0x13, 1, 1, 4),
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array(5, 0x25, 1, 1, 6),
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array(6, 0x43, 1, 1, 8),
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array(7, 0x89, 1, 1, 10),
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array(8, 0x11d, 1, 1, 32),
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);
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}
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/**
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* @dataProvider tabProvider
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* @param integer $symbolSize
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* @param integer $generatorPoly
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* @param integer $firstRoot
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* @param integer $primitive
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* @param integer $numRoots
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* @return void
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*/
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public function testCodec($symbolSize, $generatorPoly, $firstRoot, $primitive, $numRoots)
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{
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if (defined('MT_RAND_PHP')) {
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mt_srand(0xdeadbeef, MT_RAND_PHP);
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} else {
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mt_srand(0xdeadbeef);
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}
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$blockSize = (1 << $symbolSize) - 1;
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$dataSize = $blockSize - $numRoots;
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$codec = new ReedSolomonCodec($symbolSize, $generatorPoly, $firstRoot, $primitive, $numRoots, 0);
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for ($errors = 0; $errors <= $numRoots / 2; $errors++) {
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// Load block with random data and encode
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$block = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
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for ($i = 0; $i < $dataSize; $i++) {
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$block[$i] = mt_rand(0, $blockSize);
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}
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// Make temporary copy
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$tBlock = clone $block;
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$parity = SplFixedArray::fromArray(array_fill(0, $numRoots, 0), false);
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$errorLocations = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
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$erasures = array();
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// Create parity
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$codec->encode($block, $parity);
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// Copy parity into test blocks
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for ($i = 0; $i < $numRoots; $i++) {
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$block[$i + $dataSize] = $parity[$i];
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$tBlock[$i + $dataSize] = $parity[$i];
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}
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// Seed with errors
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for ($i = 0; $i < $errors; $i++) {
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$errorValue = mt_rand(1, $blockSize);
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do {
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$errorLocation = mt_rand(0, $blockSize);
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} while ($errorLocations[$errorLocation] !== 0);
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$errorLocations[$errorLocation] = 1;
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if (mt_rand(0, 1)) {
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$erasures[] = $errorLocation;
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}
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$tBlock[$errorLocation] ^= $errorValue;
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}
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$erasures = SplFixedArray::fromArray($erasures, false);
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// Decode the errored block
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$foundErrors = $codec->decode($tBlock, $erasures);
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if ($errors > 0 && $foundErrors === null) {
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$this->assertEquals($block, $tBlock, 'Decoder failed to correct errors');
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}
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$this->assertEquals($errors, $foundErrors, 'Found errors do not equal expected errors');
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for ($i = 0; $i < $foundErrors; $i++) {
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if ($errorLocations[$erasures[$i]] === 0) {
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$this->fail(sprintf('Decoder indicates error in location %d without error', $erasures[$i]));
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}
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}
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$this->assertEquals($block, $tBlock, 'Decoder did not correct errors');
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}
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}
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} |