'Is Latency Slowing Down your E2E Tests?' by IcyApril e2etesting selenium
A little while ago, I was tasked with helping a dev team improve their build times. When we drilled into these build times, we found that testing was the main lag. To measure improvement I found that are two essential metrics that are vital to track when reducing software build times; test duration and test failure rate.
Selenium offers a suite of open-source tools useful for E2E testing. In a previous HackerNoon article, Rahul Jainfor E2E testing and also described how you can use LambdaTest’s Selenium Grid to speed up the process. Traditional cloud testing platforms will run different parts of the testing lifecycle on different machines. This introduces latency when running the tests. Indeed, sometimes latency is unavoidable given there is ultimately a limit on the speed of light. By removing this complexity and instead of performing test execution on one machine in the cloud, LambdaTest achieved these speed improvements whilst still offering their customers the benefit of the cloud.
Suppose you have a test suite of 150 tests which each individually have a 99% pass rate. Instinctively, you’d think that the entire test suite would have a 99% pass rate too. However, cascading failure means that a 99% success rate would compound 150 times to just a ~22% overall success rate for the test suite .
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