How with the current project (boolean calculator) add testing via JUnit4?

Question

Java

I have a boolean calculator project, the teacher gave the task to do testing through JUnit4, how to do it?

Answer 1

1. Add jUnit to project dependencies. (maven, gradle, ant)
​​2. In the project structure, add a directory for test sources (src-test, for example)
3. Read of. jUnit documentation about writing tests and their s...
4. ?????
5. PROFIT!!!1