android/testResources/fonts/aar_font_family.xml

<?xml version="1.0" encoding="utf-8"?>
<font-family xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:app="http://schemas.android.com/apk/res-auto">
  <font
      android:font="@font/aar_font1"
      android:fontWeight="400"
      app:font="@font/aar_font1"
      app:fontStyle="normal"
      app:fontWeight="400" />
</font-family>