Codes of a class are given and expected to be tested? Test class and assert applications are required.

Parameters --> RegisterForegroundService()

--> StartBackgroundService()

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Android.App;

using Android.Content;

using Android.OS;

using Android.Runtime;

using Android.Support.V4.App;

using Android.Views;

using Android.Widget;

namespace Covid19Radar.Droid.BackgroundService

{

[Service(Name = "net.Kzmx.Covid19Radar.BackgroundService", Process = ":BleProcess")]

public class BackgroundService : Service

{

public override IBinder OnBind(Intent intent)

{

return null;

}

public override StartCommandResult OnStartCommand(Android.Content.Intent intent, StartCommandFlags flags, int startId)

{

if (Build.VERSION.SdkInt >= BuildVersionCodes.O)

{

//Android 8 Oreo

this.RegisterForegroundService();

}

Task task = new Task(() =>

{

// Do Back Ground Task

while (true)

{

System.Threading.Thread.Sleep(10000);

System.Diagnostics.Debug.WriteLine("Do Background");

}

});

task.Start();

return StartCommandResult.Sticky;

}

public void StartBackgroundService()

{

Intent serviceIntent = new Intent(this, typeof(BackgroundService));

serviceIntent.AddFlags(ActivityFlags.NewTask);

serviceIntent.SetPackage(this.PackageManager.GetPackageInfo(this.PackageName, 0).PackageName);

base.StartService(serviceIntent);

}

public override void OnDestroy()

{

base.OnDestroy();

System.Diagnostics.Debug.WriteLine("OnDestroy");

this.StartBackgroundService();

}

void RegisterForegroundService()

{

NotificationManager manager = (NotificationManager)GetSystemService(NotificationService);

//Andorid8.0 Oreo Channel

string channelId = "Covid19RadarNotification";

if (Build.VERSION.SdkInt >= BuildVersionCodes.O)

{

string channelNm = "Covid19Radar";

NotificationChannel channel = new NotificationChannel(channelId, channelNm, NotificationImportance.Default)

{

Description = ""

};

manager.CreateNotificationChannel(channel);

}

var notification = new Notification.Builder(this)

.SetContentTitle(Resources.GetString(Resource.String.app_name))

.SetContentText("Started ForegroundService.")

.SetSmallIcon(Resource.Drawable.notification_icon_background) //Android 7

.SetColor(ActivityCompat.GetColor(Android.App.Application.Context, Resource.Color.notification_material_background_media_default_color)) //Android7.0

.SetOngoing(true)

.SetChannelId(channelId) // Android8

.Build();

// Enlist this instance of the service as a foreground service

this.StartForeground(2451, notification);

}

}

}