Subiendo proyecto completo sin restricciones de git ignore

vendor/bacon/bacon-qr-code/test/Common/ReedSolomonCodecTest.php

@@ -0,0 +1,96 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\ReedSolomonCodec;
+use PHPUnit\Framework\TestCase;
+use SplFixedArray;
+
+class ReedSolomonTest extends TestCase
+{
+    public function tabs() : array
+    {
+        return [
+            [2, 0x7, 1, 1, 1],
+            [3, 0xb, 1, 1, 2],
+            [4, 0x13, 1, 1, 4],
+            [5, 0x25, 1, 1, 6],
+            [6, 0x43, 1, 1, 8],
+            [7, 0x89, 1, 1, 10],
+            [8, 0x11d, 1, 1, 32],
+        ];
+    }
+
+    /**
+     * @dataProvider tabs
+     */
+    public function testCodec(int $symbolSize, int $generatorPoly, int $firstRoot, int $primitive, int $numRoots) : void
+    {
+        mt_srand(0xdeadbeef, MT_RAND_PHP);
+
+        $blockSize = (1 << $symbolSize) - 1;
+        $dataSize  = $blockSize - $numRoots;
+        $codec     = new ReedSolomonCodec($symbolSize, $generatorPoly, $firstRoot, $primitive, $numRoots, 0);
+
+        for ($errors = 0; $errors <= $numRoots / 2; ++$errors) {
+            // Load block with random data and encode
+            $block = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
+
+            for ($i = 0; $i < $dataSize; ++$i) {
+                $block[$i] = mt_rand(0, $blockSize);
+            }
+
+            // Make temporary copy
+            $tBlock = clone $block;
+            $parity = SplFixedArray::fromArray(array_fill(0, $numRoots, 0), false);
+            $errorLocations = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
+            $erasures = [];
+
+            // Create parity
+            $codec->encode($block, $parity);
+
+            // Copy parity into test blocks
+            for ($i = 0; $i < $numRoots; ++$i) {
+                $block[$i + $dataSize] = $parity[$i];
+                $tBlock[$i + $dataSize] = $parity[$i];
+            }
+
+            // Seed with errors
+            for ($i = 0; $i < $errors; ++$i) {
+                $errorValue = mt_rand(1, $blockSize);
+
+                do {
+                    $errorLocation = mt_rand(0, $blockSize);
+                } while (0 !== $errorLocations[$errorLocation]);
+
+                $errorLocations[$errorLocation] = 1;
+
+                if (mt_rand(0, 1)) {
+                    $erasures[] = $errorLocation;
+                }
+
+                $tBlock[$errorLocation] ^= $errorValue;
+            }
+
+            $erasures = SplFixedArray::fromArray($erasures, false);
+
+            // Decode the errored block
+            $foundErrors = $codec->decode($tBlock, $erasures);
+
+            if ($errors > 0 && null === $foundErrors) {
+                $this->assertSame($block, $tBlock, 'Decoder failed to correct errors');
+            }
+
+            $this->assertSame($errors, $foundErrors, 'Found errors do not equal expected errors');
+
+            for ($i = 0; $i < $foundErrors; ++$i) {
+                if (0 === $errorLocations[$erasures[$i]]) {
+                    $this->fail(sprintf('Decoder indicates error in location %d without error', $erasures[$i]));
+                }
+            }
+
+            $this->assertEquals($block, $tBlock, 'Decoder did not correct errors');
+        }
+    }
+}