This application is fully harmless. It is NOT a virus!
"Test your antivirus" verifies if your antivirus is working correctly. It uses the EICAR Antivirus Test File that is harmless.

How to use this app:
When installing, your antivirus software should detect it as a threat.

After install it, you can run a deeper test. On these, your antivirus should detect in real-time:

a) Several copies of EICAR Antivirus Test file with random names and one of these extensions: APK, JS, DOCX, TXT
b) A maximum of 5 copies of EICAR test file inside a ZIP file (eicar.zip)

If not detects all, try to run a complete analysis of your device.