Function runTest

test/v8-updates/test-linux-perf-logger.js:96–137

(test)

];

function runTest(test) {
  const report = {
    title: test.title,
    perfMap: '[uninitialized]',
    errors: [],
  };

  const args = test.nodeFlags.concat(fixtures.path('linux-perf-logger.js'));
  const run = spawnSync(process.execPath, args, { cwd: tmpdir.path, encoding: 'utf8' });
  if (run.error) {
    report.errors.push(run.error.stack);
    return report;
  }
  if (run.status !== 0) {
    report.errors.push(`running script:\n${run.stderr}`);
    return report;
  }

  try {
    report.perfMap = readFileSync(`/tmp/perf-${run.pid}.map`, 'utf8');
  } catch (err) {
    report.errors.push(`reading perf map: ${err.stack}`);
    return report;
  }

  const hexRegex = '[a-fA-F0-9]+';
  for (const testRegex of test.matches) {
    const lineRegex = new RegExp(`${hexRegex} ${hexRegex}.* ${testRegex}`);
    if (!lineRegex.test(report.perfMap)) {
      report.errors.push(`Expected to match ${lineRegex}`);
    }
  }

  for (const regex of test.noMatches) {
    const noMatch = new RegExp(regex);
    if (noMatch.test(report.perfMap)) {
      report.errors.push(`Expected not to match ${noMatch}`);
    }
  }

  return report;
}

function serializeError(report, index) {
  return `[ERROR ${index + 1}] ${report.title}