packages/WallpaperBackup/test/AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.android.wallpaperbackup.tests">

    <application android:label="WallpaperBackup Tests">
        <uses-library android:name="android.test.runner" />
    </application>

    <instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
                     android:targetPackage="com.android.wallpaperbackup.tests"
                     android:label="WallpaperBackup Tests"/>
</manifest>