Type Android Junit4 not present exception

Question

I have an Android project that I am trying to run Instrumentation tests for using AndroidStudio, but when I try to run the whole class file for the tests, I get the exceptio

Answer 1

Hopefully someone can give you a better answer as to why, but I had this exact same problem. I did the following:

• Build > Clean Project,
• Ran the app on the emulator

This done, I was able to get back into a state where I could run the tests again.