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Posted June 4, 2013

Guest Post: Testing JavaScript with Yeti and Sauce Labs WebDriver with Ryuichi Okumura


When we read YUI contributor Ryuichi Okumura's blog post on testing JavaScript with Yeti and Sauce, we thought it was an awesome use of Sauce, and wanted to share it with you. Ryuichi kindly gave us the green light to post-cross this, so read on to hear about how he's using Sauce for JS testing, and check out his Twitter and Github. We've recently been quite busy developing a number of JavaScript testing environments, such as test frameworks and test runners. Yeti, developed by the YUI team, is one of the test runners. As for the available test frameworks, Yeti supports the major libraries—not only YUI Test, but QUnit, Jasmine, and Mocha. I've shown examples previously where Yeti and QUnit were used together.

On top of JavaScript testing, we can't forget the devices and browsers on which the testing is being done in the first place. With the spread of so many different types of mobile devices and so many OSes and browsers in development, it's become important to carry out tests on the actual browsers. In these conditions, services have appeared that allow you to open and operate the actual browsers online. Today, I'd like to show you a test using one of those services, Sauce Labs. Sauce Labs is a cloud service that offers many different mobile and desktop browser environments. Also, one of Sauce Labs' major features is that it supports Selenium testing with the WebDriver protocol. Just like Yeti, since WebDriver protocol is supported, you can boot the browser on the cloud through the command line and run a JavaScript test. First, You can sign up easy Sauce Labs account if you doesn't have a Sauce Labs account. Sauce Labs provides some free and paid plans. Also there is "Open Sauce" plan, this is very kind and helping plan for OSS developers like you. Sign up when you're done, let's prepare for the testing environment. Check your access key and download Sauce-Connect.jar file from Sauce Connect guide. Start Sauce Connect:

java -jar Sauce-Connect.jar <username><accesskey>

Install Yeti via npm command if you haven't install yet.

npm install -g yeti

Start Yeti hub server while specify Sauce Labs WebDriver endpoint:

yeti --server --wd-url http://<username>:<access key> Yeti Hub started. LAN: Local: http://localhost:9000

And, Launch browser you like while specify a test file:

yeti --browser chrome src/date/tests/unit/*.html Waiting for Hub to launch browsers... Agent connected: Chrome (26.0.1410.64) / Windows 7 from ✓ Testing started on Chrome (26.0.1410.64) / Windows 7 ✓ Agent completed: Chrome (26.0.1410.64) / Windows 7 ✓ 22 tests passed! (35 seconds) Agent disconnected: Chrome (26.0.1410.64) / Windows 7 from

That's all. It's able to test on the browser in the cloud even if you don't have it!

Jun 4, 2013
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