Instamojo Android SDK Payment callback not received in TEST Environment

[Irfanhaidermomin]

I initiate like this:

Instamojo.getInstance().initiatePayment(this, orderID, this);

@OverRide
public void onInstamojoPaymentComplete(String orderID, String transactionID, String paymentID, String paymentStatus) {
Log.e("Payment", "Payment complete. Order ID: " + orderID + ", Transaction ID: " + transactionID
+ ", Payment ID:" + paymentID + ", Status: " + paymentStatus);
//paymentId = paymentID;
}

@Override
public void onPaymentCancelled() {
    Toast.makeText(PaymentActivity.this, "cancelled", Toast.LENGTH_SHORT).show();
}

@Override
public void onInitiatePaymentFailure(String s) {
    Log.e("cancelled",s);
    Toast.makeText(PaymentActivity.this, s, Toast.LENGTH_SHORT).show();
}