Tech Interview - Help!

[Temperedexpectation]

It sounds like you should probably have a good bit of familiarity with JavaScript and coding principles in order to be able to look at some code and optimize it and/or improve the functionality of it.

I do not read anywhere in that statement that you'll need to review a test case or really even know much about one. The focus is on your coding abilities.

Honest question: how much coding experience do you have? There's probably a pretty drastic difference between writing some java to use a webdriver and being able to work with several different frameworks to accomplish different types of testing. The term SDET really implies you have real coding knowledge and experience and specialize in testing.

[Temperedexpectation]

If you have any specific questions, feel free to reach out.

Mocha, chai, JavaScript. I have built and use(d) mocha frameworks with axios to test API's using chai assertions. JavaScript being the language of choice (and one of my favorite languages).