appium server capabilities examples android device

Selenium Grid is basically a proxy server that speaks the WebDriver protocol, and manages connections to a pool of WebDriver servers. Thankfully, there's a way to mitigate all this complexity, by using a special-purpose load balancer called Selenium Grid.

(In this example, we're trying to run a web test in parallel across Safari on iOS, Chrome on Android, and Chrome on Desktop). Essentially, you're dealing with an execution model that looks like this: Now your test script needs to know the host and port of each server, which servers host which devices or browsers, and how to make sure it doesn't start too many tests on one server and overload its capacity. Either way, you're eventually going to run into a situation where you need multiple automation servers running, which adds a lot of complexity to your test script. Or what if you're running a web test, and would like to make sure your testing works on desktop browsers as well as mobile devices? For that you'll need to mix in Selenium. What if you want to run 100 Appium tests in parallel? You're likely not going to be able to do that all with one Appium server. There's a limit to how many real or virtual devices you can run on one machine. This approach only scales so far, however. We've already looked at how to run your Appium tests in parallel, and it involves setting up specific capabilities in your test to make sure that, for each test, Appium can instantiate an appropriate driver without stepping on the toes of the drivers running other tests. But when it comes to a production CI environment, you're definitely going to want to run your tests in parallel, with as high a concurrency as you can manage. During the development of your test suite, it's helpful to run tests one at a time, and on one target platform at a time.

Appium server capabilities examples android device