From 71e226b7820dbcfb352719582ad9e79f575d5bc4 Mon Sep 17 00:00:00 2001
From: "Ryan X. Charles" <ryan@bitpay.com>
Date: Wed, 2 Jul 2014 17:40:56 -0700
Subject: [PATCH] serialize payment request for signature

---
 lib/PayPro.js       |  9 +++++++++
 test/test.PayPro.js | 16 ++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/lib/PayPro.js b/lib/PayPro.js
index 237a57c..f827cf6 100644
--- a/lib/PayPro.js
+++ b/lib/PayPro.js
@@ -167,6 +167,15 @@ PayPro.prototype.setObj = function(obj) {
   return this;
 };
 
+PayPro.prototype.serializeForSig = function() {
+  if (this.messageType !== 'PaymentRequest')
+    throw new Error('serializeForSig is only for PaymentRequest');
+
+  this.message.set('signature', new Buffer([]));
+  var buf = this.serialize();
+  return buf;
+};
+
 PayPro.prototype.serialize = function() {
   //protobufjs returns either a Buffer or an ArrayBuffer
   //but we always want a Buffer (which browserify understands, browser or no)
diff --git a/test/test.PayPro.js b/test/test.PayPro.js
index 4b654f6..c56eb20 100644
--- a/test/test.PayPro.js
+++ b/test/test.PayPro.js
@@ -177,6 +177,22 @@ describe('PayPro', function() {
 
   });
 
+  describe('#serializeForSig', function() {
+
+    it('should serialize a PaymentRequest and not fail', function() {
+      var pd = new PayPro.PaymentDetails();
+      pd.set('time', 0);
+      var pdbuf = pd.toBuffer();
+
+      var paypro = new PayPro();
+      paypro.makePaymentRequest();
+      paypro.set('serialized_payment_details', pdbuf);
+      var buf = paypro.serializeForSig();
+      buf.length.should.be.greaterThan(0);
+    });
+
+  });
+
   describe('#serialize', function() {
 
     it('should serialize', function() {