How to test FCM/GCM integration without server side ?

GCM/FCM

Usually when mobile developers start working with server side APIs/calls not all the APIs have implemented, they mock the response and work on it till the back-side will be ready .

When we talk about FCM , sometimes we face integration problems, which is sometimes related to code implementation itself, or to server side configurations, or server side implementation for push notification . At least android developers would like to ensure that everything from their side work properly and there is no problems in code implementation and device registration .

How we can do that ?

Simply via any rest client like:

let’s do it with Restlet Client , you can add Restlet Client to google chrome from here

How to configure push notification ?

Let’s follow these quick steps :

1- URL : http://android.googleapis.com/gcm/send .

2- Method: POST .

3- Headers:

  • Content-Type : application/json
  • Authorization : key=AIzaS………

So what is key = $$$ ?

Authorization :key=AIzaSyDktPqata_iaiusbdiaasd_adsadalxc-fHHmTs

It is api_key in you google-services.json file , you have to replace $$$ with your current_key value .

4- Body : you need to get device registration ID to your Application id at GCM .

If you have a working code , you can generate it , if not , please check this Helper APP to generate it .

“registration_ids”:[YOUR_DEVICE_REGISTRATION_ID]

5- You need to mock your Json Payload to add it as value in data attribute .

“data”: {
“currency”: “EURO”,
“currency_code”: “EUR”,
“value”:1.0738,
“base_currency”: “USD”,
“status”:”loss”
}

Finally the post-body has to be something like that :

{
“registration_ids”:[“dasX5_6b220:APA91bGvTsnkeuYLuBC9KUTORb-X_tizfsgz7NX0DMuI9STxWGAGCHUSYdYHzYUFQzR2Gl4yKXCyxq20jTBDmcIdB_KGWgFrlngxuvDL29VDGf45tbEf0Iz3_ZLTjE8FyZb1kELb97uP”],
“data”: {
“currency”: “EURO”,
“currency_code”: “EUR”,
“value”:1.0738,
“base_currency”: “USD”,
“status”:”loss”
}
}

You have to see the similar view .

once you press send, you have to see the response like this .

You have to see Response code 200 , and message_id .

Once you have message_id , you will receive a push notification for the registered device id .

Android Lead | Senior Mobile Engineer https://github.com/ahmedeltaher https://www.linkedin.com/in/ahmed-eltaher-65985252