public async Task TestForGetAllNotifications()
{
List <Notification> listOfNotifications = new List <Notification>();
Mock <INotificationManager> manager = new Mock <INotificationManager>();
manager.Setup(mock => mock.GetNotificationsAsync("hverma")).Returns(Task.FromResult(listOfNotifications));
NotificationServices services = new NotificationServices(manager.Object);
var expectedOutput = await services.GetNotificationsAsync("hverma");
CollectionAssert.AreEqual(listOfNotifications, expectedOutput);
}