How to write jUnit tests for a web application?

Question

Java

I wrote a term paper (I took the burden not on my own, that’s why it’s clumsy), it remains to test it, I thought to do everything with pens. The teacher said he used jUnit. Two weeks before the defense, I don’t know what to do. Link to the source
Tell me where to start, what to read. And is it possible to do everything in two weeks.

Answer 1

for web testing - Selenium + JUnit/TestNG