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Cross Browser Testing: Winning The Fight With Test Automation

At Mozilla, a lot of work has been done to try to promote best practices around cross browser testing - although many of us are working carefully to ensure cross browser compatibility of our products, plenty of developers don’t test across many browsers outside the top one or two.

A large part of this is education — many devs, particularly those towards the client-side end of the equation, find cross browser tools tricky to set up. Many new devs are learning their trade through courses that only show testing in one browser - hard to believe in 2016 - and don’t learn command line skills, or setting up tools like Selenium, etc.

To this end, Mozilla started a campaign to educate devs, starting with research, the current state of the industry, and business cases for cross browser testing (See ). They they went on to create learning material to fill the gap between fundamental front end skills, and successful cross browser testing, and partnered with Sauce Labs to provide easier access to tools. The learning module can be found here:

In this talk, Mozilla’s Chris Mills talks about some of this work including:

• The importance of cross browser testing

• Deciding on what to include in the learning module

• What he learned along the way

• What he found easy and difficult as someone coming from the front-end dev world

About Chris

Chris Mills is a senior tech writer at Mozilla where he writes docs and demos about open web apps, and heads up MDN’s Learning Area ( He loves tinkering around with HTML, CSS, JavaScript and other web technologies, and gives occasional tech talks at conferences and universities. Outside work, he enjoys playing heavy metal drums and drinking good beer. He lives near Manchester, UK, with his good lady and three beautiful children.

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  • Alissa L.

    Happy Friday everyone! Thank you for attending the Selenuim Meetup at the Mozilla San Francisco office. Mozilla and Sauce Labs are excited to offer you a preview of our Cross-browser Testing Tutorial and Mozilla + Sauce partnership featuring an extended trial. Please try it out and let us know what you think! We want to know how we're helping you with automated testing and if there is something you really want to see in a trial like this one.

    Start your trial here:

    Let us know what you think here:

    Finally, for those who want to see Chris's presentation from last night, here is the recording:

    See everyone in 2017!

    Your faithful organizers,
    Alissa and Bill

    2 · December 2

    • Yuri S.

      Is there a link to his Selenium Course Chris mentioned in his presentation available somewhere? I asked him if the link at the last screen was it, and he said yes, although it has nothing except the same presentation. Where can we find the corse itself?

      3 days ago

    • Alissa L.

      Hi Yuri. Here is link to the Cross Browser Testing documentation on the Mozilla Developer Network: https://developer.mozi...­. Is this what you were looking for?

      1 · 3 days ago

  • Manny S.

    This was nice meetup. Even though it was short but high quality information was shared. Amazing food and blue cheeze.. Eagerly waiting for the next one..

    December 2

  • Jackie J.

    I have to say that this was the shortest meetup I've ever been to but there was good information about Selenium, good conversation, food, and beer. And I even go to take home some Sauce Labs hot sauce! What more could I ask for?

    1 · December 1

  • cyberdome

    where do ppl park for free ?

    November 30

    • Yuri S.

      I think – anywhere along Embarcadero after 6pm. But look for signs. I might be wrong.

      November 30

  • Neha K.

    Is anyone going from Sunnyvale so that i can share the ride.

    November 30

  • MaksimH

    Are you planning to record the meeting?

    1 · November 29

    • Alissa L.

      Hi Maksim. Yes, the presentation will be recorded, and posted to the Meetup page.

      2 · November 30

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  • Sauce Labs

    Organizing always! Refreshments and facilities as needed.

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