I have to perform cross-browser testing on different platforms. So before to start just want to know the important points that need to be taken care of.
Multi-device/browser testing strategy
Above all else:
Know your user population and the devices they use and the way they use them
- Determine if your focus is manual or automation testing as they have different requirements
- Find out what browsers, devices & versions are used by your users (server logs, new relic, etc.)
- Ask the business what percent of traffic needs to be supported. Make sure you use %'s and not versions like "IE6" becuase version traffic is always changing (constantly decreasing for old versions)
- Explain why "all users must be served" will cripple modern development and interfaces (e.g. spending 50% of your development on 0.01% of your customers is a no-win situation compared to competitors). There are thousands of android devices and no-one tests them all.
- Determine whether you want an in-house testing lab vs cloud testing vendors such as Browserstack and Sauce Labs
- Determine the business needs and future plans. For example if the current audience is only 25% mobile - but expected to grow to 75% mobile over the next 2 years you would want to take that into account when developing for and testing on mobile devices.