title: How to re"build" an already-working open source mobile app in IntelliJ?
body: <p>I want to write a few unit tests in IntelliJ to test out an app I have found on F-Droid called AAT. I want to use the source code available on F-Droid to build the application in IntelliJ/run it on an emulator/test the application using a few unit tests that I've written in IntelliJ. </p>
  
  <p>However, I'm confused about how I would upload the source code for an app in IntelliJ. How would I use the source code for an app to "build" it in IntelliJ? Also, how would I have to structure my project files to be able to run my unit tests on the application once its been built?</p>
  
  <p>Please let me know if I'm not being clear enough, thank you.</p>