Method poller

lib/internal/test_runner/test.js:476–485

()

    }, timeout);

    const poller = async () => {
      try {
        const result = await condition();

        done(noError, result);
      } catch (err) {
        cause = err;
        pollerId = setTimeout(poller, interval);
      }
    };

    poller();
    return promise;