propresenter-php/php/tests/BinaryFidelityTest.php
2026-03-01 16:12:17 +01:00

116 lines
3.7 KiB
PHP

<?php
namespace ProPresenter\Parser\Tests;
use PHPUnit\Framework\TestCase;
use Rv\Data\Presentation;
class BinaryFidelityTest extends TestCase
{
private const ALL_SONGS_DIR = '/Users/thorsten/AI/propresenter/ref/all-songs';
private const TEST_PRO_PATH = '/Users/thorsten/AI/propresenter/ref/Test.pro';
private const EMPTY_SKIP_FILE = '/Users/thorsten/AI/propresenter/ref/all-songs/Du machst alles neu_ver2025-05-11-4.pro';
private const EXPECTED_NON_EMPTY_ALL_SONGS = 168;
public function testDecodeEncodeRoundTripAcrossReferenceFiles(): void
{
$referenceFiles = glob(self::ALL_SONGS_DIR . '/*.pro');
$this->assertIsArray($referenceFiles, 'Unable to list .pro files in all-songs directory.');
sort($referenceFiles, SORT_STRING);
$paths = [];
foreach ($referenceFiles as $path) {
if ($path === self::EMPTY_SKIP_FILE) {
continue;
}
$bytes = @file_get_contents($path);
$this->assertIsString($bytes, 'Unable to read file: ' . $path);
if ($bytes === '') {
$this->fail('Unexpected empty file not in skip list: ' . $path);
}
$paths[] = $path;
}
$paths[] = self::TEST_PRO_PATH;
$this->assertCount(
self::EXPECTED_NON_EMPTY_ALL_SONGS + 1,
$paths,
'Expected 168 non-empty all-songs files plus Test.pro.'
);
$failures = [];
$identicalCount = 0;
foreach ($paths as $path) {
$original = @file_get_contents($path);
$this->assertIsString($original, 'Unable to read file: ' . $path);
$presentation = new Presentation();
try {
$presentation->mergeFromString($original);
} catch (\Throwable $throwable) {
$failures[] = [
'path' => $path,
'reason' => 'decode_error',
'message' => $throwable->getMessage(),
];
continue;
}
$reencoded = $presentation->serializeToString();
if ($original === $reencoded) {
$identicalCount++;
continue;
}
$firstMismatch = $this->firstMismatchOffset($original, $reencoded);
$failures[] = [
'path' => $path,
'reason' => 'byte_mismatch',
'original_length' => strlen($original),
'reencoded_length' => strlen($reencoded),
'length_delta' => strlen($reencoded) - strlen($original),
'first_mismatch_offset' => $firstMismatch,
];
}
$total = count($paths);
$mismatchCount = count($failures);
$testProIdentical = !in_array(self::TEST_PRO_PATH, array_column($failures, 'path'), true);
$message = "Binary round-trip results: {$identicalCount}/{$total} identical, {$mismatchCount} differ. Test.pro identical: "
. ($testProIdentical ? 'yes' : 'no') . '.';
if ($mismatchCount > 0) {
$message .= "\nDetails:\n" . json_encode($failures, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
}
$this->assertSame([], $failures, $message);
}
private function firstMismatchOffset(string $left, string $right): ?int
{
$leftLength = strlen($left);
$rightLength = strlen($right);
$limit = min($leftLength, $rightLength);
for ($index = 0; $index < $limit; $index++) {
if ($left[$index] !== $right[$index]) {
return $index;
}
}
if ($leftLength !== $rightLength) {
return $limit;
}
return null;
}
}