Test running failed: Unable to find instrumentation info for: ComponentInfo{} — error trying to test in IntelliJ with Gradle

Question

Everytime I try to run my tests the console says this:

Running tests
Test running startedTest running failed: Unable to find instrumentation info for:
ComponentI         


        

Answer 1

I had this problem and fixed it by going to Run -> Edit Configurations -> Green '+' button at the top left -> JUnit

From there, set the 'use the classpath mod...' to 'app' (or your default app name, which is the one that appears to the left of the run (play button) when you run the app)

Finally, put your test class name in the 'class:' textbox. Click apply and okay.

At this point, if the test class doesn't have other errors, it should work.