Getting error while generating test cases for espresso android

Question

I am following these two links 1 and 2 for espresso test report but getting error while running ./gradlew createDebugCoverageReport. The error will be shown in

Answer 1

A few things that got this running:

1. Make sure that all the requisites are checked, per this other thread: https://stackoverflow.com/a/25525390/3195307
2. Make sure there is a connected device ready to execute your tests. Emulator, physical device, or cloud device. It should show in 'Select Deployment Target' under 'connected devices' if you play your tests in IDE.
3. Run Gradlew (project gradle wrapper) from the project directory like so: ./gradlew :app:createDebugCoverageReport