Function initializeTestRunner

curriculum/src/test/test-challenges.js:511–538

({
  build,
  sources,
  type,
  hooks,
  loadEnzyme
})

}

async function initializeTestRunner({
  build,
  sources,
  type,
  hooks,
  loadEnzyme
}) {
  // Ensure FCCTestRunner is available before creating it
  await page.waitForFunction(
    'window.FCCTestRunner && window.FCCTestRunner.createTestRunner',
    { timeout: 5000 }
  );

  try {
    await _initializeTestRunner({ build, sources, type, hooks, loadEnzyme });
  } catch (e) {
    // It's not clear why, but sometimes the iframe load times out. It seems to
    // be an issue with Puppeteer, so we give it one more try to reduce test
    // flakiness.
    if (e.message.includes('Timed out waiting for the test frame to load')) {
      console.warn('Test frame load timed out. Retrying...');
      page = await createAndVisitNewPage();
      await _initializeTestRunner({ build, sources, type, hooks, loadEnzyme });
    } else {
      throw e;
    }
  }
}