Testing push notifications in Xcode simulator. Just donwload and drag the file to simulator window.

simulator.apns

{
    "Simulator Target Bundle": "<your app's bundle id>",
    "aps": {
        "alert": {
            "title": "Push Notification",
            "subtitle": "Test Push Notifications",
            "body" : "Testing Push Notifications on iOS Simulator",
        }
    }
}