From 7723dd302a81bda30fe12f7e5a681292428ff099 Mon Sep 17 00:00:00 2001
From: Braydon Fuller <braydon@bitpay.com>
Date: Mon, 18 May 2015 10:35:31 -0400
Subject: [PATCH] Added test case for an empty OP_RETURN for script.getData()
 Fixes #1237

---
 lib/script/script.js  | 6 +++++-
 test/script/script.js | 9 +++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/lib/script/script.js b/lib/script/script.js
index bd0172b..7b680a6 100644
--- a/lib/script/script.js
+++ b/lib/script/script.js
@@ -365,7 +365,11 @@ Script.prototype.isDataOut = function() {
  */
 Script.prototype.getData = function() {
   if (this.isDataOut() || this.isScriptHashOut()) {
-    return new Buffer(this.chunks[1].buf);
+    if (_.isUndefined(this.chunks[1])) {
+      return new Buffer(0);
+    } else {
+      return new Buffer(this.chunks[1].buf);
+    }
   }
   if (this.isPublicKeyHashOut()) {
     return new Buffer(this.chunks[2].buf);
diff --git a/test/script/script.js b/test/script/script.js
index 5c65275..21a23b5 100644
--- a/test/script/script.js
+++ b/test/script/script.js
@@ -658,6 +658,15 @@ describe('Script', function() {
   });
 
   describe('getData returns associated data', function() {
+    it('works with this testnet transaction', function() {
+      // testnet block: 00000000a36400fc06440512354515964bc36ecb0020bd0b0fd48ae201965f54
+      // txhash: e362e21ff1d2ef78379d401d89b42ce3e0ce3e245f74b1f4cb624a8baa5d53ad (output 0);
+      var script = Script.fromBuffer(new Buffer('6a', 'hex'));
+      var dataout = script.isDataOut();
+      dataout.should.equal(true);
+      var data = script.getData();
+      data.should.deep.equal(new Buffer(0));
+    });
     it('for a P2PKH address', function() {
       var address = Address.fromString('1NaTVwXDDUJaXDQajoa9MqHhz4uTxtgK14');
       var script = Script.buildPublicKeyHashOut(address);