This is e2e test sample with WebdriverIO using Sauce Labs, BrowserStack or TestingBot.
BrowserStack is very powerful cloud-based cross-browser testing service!
$ export BROWSERSTACK_USERNAME=<AUTOMATE_USERNAME>
$ export BROWSERSTACK_ACCESS_KEY=<AUTOMATE_ACCESS_KEY>
$ npm run test:browserstack
Sauce Labs is very famouse cloud-based cross-browser testing service.
$ export SAUCE_USERNAME=<USER_NAME>
$ export SAUCE_ACCESS_KEY=<ACCESS_KEY>
$ npm run test:saucelabs
TestingBot is very reasonable cloud-based cross-browser testing service.
$ export TESTINGBOT_KEY=<ACCESS_KEY>
$ export TESTINGBOT_SECRET=<ACCESS_SECRET>
$ npm run test:testingbot