Function delay

genai/test/util.js:18–27

(test)

// retrying with a backoff is a good strategy:
module.exports = {
  async delay(test) {
    const retries = test.currentRetry();
    if (retries === 0) return; // no retry on the first failure.
    // see: https://cloud.google.com/storage/docs/exponential-backoff:
    const ms = Math.pow(2, retries) * 1000 + Math.random() * 2000;
    return new Promise(done => {
      console.info(`retrying "${test.title}" in ${ms}ms`);
      setTimeout(done, ms);
    });
  },
};