Parallel test execution involves running a suite of automated tests in parallel as opposed to sequentially. You don’t execute your tests one by one. Rather, you take the entire batch and split it up amongst multiple servers so that each server can run a single test at a time. These techniques have some fantastic advantages to improve your overall software development life cycle.
Advantages of running parallel test:
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You can run multiple tests at once that are only limited by the hardware of your computer. It will decrease execution time because your longest run will be as long as your slowest test.
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If this is all you have available, then this is much better than running one test at a time sequentially.
The parallel test execution is different from sequential testing, where we test different modules or functionalities one after the other. Even in the case of testing applications on multiple browsers, tests are performed sequentially on various browsers. This approach of testing is very time-consuming.
Parallel testing helps to reduce execution time and efforts and results in faster time to delivery. It proves to be handy specifically in the case of automation, compatibility testing, localization, and internalization testing. In a scenario where we have two versions of software available, and we need to check its stability and compatibility, we can run the two versions simultaneously and find issues at a much faster rate.
You can use a platform like QAppAssure which allows you to test on-cloud and on-field devices, across 100+ device, make and models, Integrate with Jira, CI/CD tools, and also use Appium, Calabash, Espresso, UIAutomator, XCUITest. You can run unlimited parallel tests with the free trial pack.