Chromedriver is probably the easiest way to get up and running locally. It's also conveniently free. This doesn't work well in headless environments (like CI servers), but is a great way to do a quick check of your tests in a local browser, where you can see everything that's going on.

Start by installing chromedriver:

npm install chromedriver --save-dev

Then you can test using code like:

import assert from 'assert';
import cabbie, {startChromedriver} from 'cabbie-async';

// Start the chromedriver server, this provides a local selenium server
// You must install chromedriver to use this.

async function runTest() {
  // connect to chromedriver, adding {debug: true} makes cabbie log each method call.
  const driver = cabbie('chromedriver', {debug: true});

  try {
    await driver.activeWindow.navigateTo('');

    const heading = await driver.activeWindow.getElement('h1');
      await heading.getText(),
      'Example Domain',
  } finally {
    await driver.dispose();

runTest().catch(ex => {