For cases of automated browser testing, when an app needs to be tested across different combinations of browsers, OS, and devices.In a case where legacy data is imported from an older system to a newer one, Parallel tests can be immensely helpful to check if everything has been moved across seamlessly using an automated regression test suite.In case the software engineering team is uncertain about the functionality of an application across devices and configurations, especially in regression-like scenarios with an updated version of an app.Now that we have some inkling of how parallel testing works and how it can optimize test execution time frames let’s have a look at certain scenarios where parallel test execution is ideal: Faster build times mean faster releases and less time spent waiting for builds to complete. In this way, more tests can be run at a time, thereby decreasing the overall time spent on testing. Pro Tip: With Parallel Testing, BrowserStack Automate and App Automate allow you to run multiple tests in parallel across various browsers/devices and OS combinations. Now imagine, when running 3 parallel tests simultaneously, the total execution time would have come down to 30 mins.Īnd for 6 parallels, it would be even further reduced to 15 mins- a far cry from what was expected before.Ĭonsidering this scenario to be one of the most basic functional tests that are automated, it boggles the mind how parallelization of tests can shave valuable minutes and hours from the most cumbersome of test suites. To perform this test for 45 different Browser/OS configurations, with each test taking an average time of 2 minutes, then the total run time of tests would be 90 mins or 1.5 hrs when run successfully in sequence. To better understand how parallel testing helps boost standard automation testing capabilities, let us take a simple example – an automated functional test of a signup form. Unlike distributed testing, where the different test components running in a distributed manner interact with each other, the parallel test approach is free from any such interaction. The overarching goal of parallel testing is to reduce time and resource constraints. Parallel Testing is a process to leverage automation testing capabilities by allowing the execution of the same tests simultaneously in multiple environments, real device combinations, and browser configurations. ![]() Parallel Testing: What it is and How it works Parallel testing allows teams to perform automated tests against several configurations at the same time to scale downtime and budget constraints while allowing for increased test coverage and ensuring quality. And in QA, the only way to ensure minimal impact from bugs is to test the code as soon as possible and fail fast.įor QA teams, it means increasing test coverage through automation, but often the sheer number of tests required to be performed along with the paucity of time to test the features means that classical sequential automated tests are not enough. ![]() With more and more software engineering teams gravitating to the CI/CD model, the onus to reduce the time to market by delivering a foolproof product is increasing.
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