cordova-plugin-background-geolocation: junit framework not found

Your Environment

• Plugin version: 3.0.0 alpha 50
• Platform: Android

• Running in Simulator:
• Cordova version (cordova -v): 8.1.2
• Cordova platform version (cordova platform ls): Android 8.0.0
• Plugin configuration options:

ionic cordova plugin add cordova-plugin-mauron85-background-geolocation@alpha --save 
--variable ANDROID_SUPPORT_LIBRARY_VERSION="23+" 
--variable GOOGLE_PLAY_SERVICES_VERSION="11.+" 
--variable ICON="@mipmap/ic_launcher" 
--variable SMALL_ICON="@mipmap/ic_launcher" 
--variable ACCOUNT_NAME="@string/app_name" 
--variable ACCOUNT_LABEL="@string/app_name"
--variable ACCOUNT_TYPE="$PACKAGE_NAME.account"
--variable CONTENT_AUTHORITY="$PACKAGE_NAME" 
--variable ALWAYS_USAGE_DESCRIPTION="description" 
--variable MOTION_USAGE_DESCRIPTION="description"

Context

Task :app:compileDebugJavaWithJavac FAILED
25 actionable tasks: 25 executed
BUILD FAILED in 40s
/../platforms/android/gradlew: Command failed with exit code 1 Error output:
Note: /../platforms/android/CordovaLib/src/org/apache/cordova/engine/SystemCookieManager.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
/../platforms/android/app/src/main/java/com/marianhello/bgloc/service/LocationServiceIntentBuilder.java:26: error: package junit.framework does not exist
import junit.framework.Assert;
                      ^
/../platforms/android/app/src/main/java/com/marianhello/bgloc/service/LocationServiceIntentBuilder.java:164: error: cannot find symbol
        Assert.assertNotNull("Context can not be null!", mContext);
        ^
  symbol:   variable Assert

Expected Behavior

After calling cordova android build, the build process should be successful

Actual Behavior

The error pops up when running cordova android build

Steps to Reproduce

1. Install plugin with config above
2. run cordova build android