TEST in Javascript frontend app ? Focus (React JS)

General view about testing, choice framework for AnalyticsWorkbench

If you heard about testing your assumptions would be like this testing pyramid:

however, here is what going no JS Testing world. Static analyses > Jest test > E2E tests number of tests we need to cover our probable errors.

what is our starting target about to test if our components and Modules in AW UI are showing correctly or not, that why we need E2E testing . to achieve this goal we need web driver.

__"E2E test won't tell what failed exactly; it just tells that sth is wrong with our application."

E2E features

1. Very slow
2. Unreliable
3. It hard to know what causes the failure

Resource : https://www.youtube.com/watch?v=veb-xTGZulY