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psalm/bin/generate_testsuites.php

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<?php
if (count($argv) < 2) {
fwrite(STDERR, 'Usage: ' . $argv[0] . ' <number_of_chunks>' . PHP_EOL);
exit(1);
}
$number_of_chunks = (int) $argv[1];
if ($number_of_chunks === 0) {
fwrite(STDERR, 'Usage: ' . $argv[0] . ' <number_of_chunks>' . PHP_EOL);
exit(1);
}
// find tests -name '*Test.php'
$files = iterator_to_array(
new RegexIterator(
new RecursiveIteratorIterator(
new RecursiveDirectoryIterator(
'tests',
FilesystemIterator::CURRENT_AS_PATHNAME|FilesystemIterator::SKIP_DOTS
),
RecursiveIteratorIterator::LEAVES_ONLY
),
'/.*Test.php$/'
)
);
mt_srand(4); // chosen by fair dice roll.
// guaranteed to be random.
// -- xkcd:221
$order = array_map(
function (): int {
return mt_rand();
},
$files
);
array_multisort($order, $files);
$chunks = array_chunk($files, ceil(count($files) / $number_of_chunks));
$phpunit_config = new DOMDocument('1.0', 'UTF-8');
$phpunit_config->preserveWhiteSpace = false;
$phpunit_config->load('phpunit.xml.dist');
$suites_container = $phpunit_config->getElementsByTagName('testsuites')->item(0);
while ($suites_container->firstChild) {
$suites_container->removeChild($suites_container->firstChild);
}
foreach ($chunks as $chunk_id => $chunk) {
$suite = $phpunit_config->createElement('testsuite');
$suite->setAttribute('name', 'chunk_' . ($chunk_id + 1));
foreach ($chunk as $file) {
$suite->appendChild($phpunit_config->createElement('file', $file));
}
$suites_container->appendChild($suite);
}
$phpunit_config->formatOutput = true;
$phpunit_config->save('phpunit.xml');