Resolves #373

Move TransactionBuilder.scriptForAddress to Address#getScriptPubKey (instance method)

lib/Address.js

@@ -168,5 +168,22 @@ Address.prototype.isScript = function() {
   return this.isValid() && this.version() === this.network().P2SHVersion;
 };
 
+// returns the scriptPubKey
+Address.prototype.getScriptPubKey = function() {
+  var version = this.version();
+  var livenet = networks.livenet;
+  var testnet = networks.testnet;
+
+  var script;
+  if (version === livenet.addressVersion || version === testnet.addressVersion)
+    script = Script.createPubKeyHashOut(this.payload());
+  else if (version === livenet.P2SHVersion || version === testnet.P2SHVersion)
+    script = Script.createP2SH(this.payload());
+  else
+    throw new Error('invalid address - unknown version');
+
+  return script;
+};
+
 
 module.exports = require('soop')(Address);

lib/TransactionBuilder.js

@@ -116,31 +116,6 @@ function TransactionBuilder(opts) {
 
 TransactionBuilder.FEE_PER_1000B_SAT = FEE_PER_1000B_SAT;
 
-/*
- * scriptForAddress
- *
- *  Returns a scriptPubKey for the given address type
- */
-
-TransactionBuilder.scriptForAddress = function(addressString) {
-
-  var livenet = networks.livenet;
-  var testnet = networks.testnet;
-  var address = new Address(addressString);
-
-  var version = address.version();
-  var script;
-  if (version === livenet.addressVersion || version === testnet.addressVersion)
-    script = Script.createPubKeyHashOut(address.payload());
-  else if (version === livenet.P2SHVersion || version === testnet.P2SHVersion)
-    script = Script.createP2SH(address.payload());
-  else
-    throw new Error('invalid output address');
-
-  return script;
-};
-
-
 TransactionBuilder._scriptForPubkeys = function(out) {
 
   var l = out.pubkeys.length;
@@ -156,7 +131,7 @@ TransactionBuilder._scriptForPubkeys = function(out) {
 TransactionBuilder._scriptForOut = function(out) {
   var ret;
   if (out.address)
-    ret = this.scriptForAddress(out.address);
+    ret = new Address(out.address).getScriptPubKey();
   else if (out.pubkeys || out.nreq || out.nreq > 1)
     ret = this._scriptForPubkeys(out);
   else

test/test.Address.js

@@ -174,6 +174,22 @@ describe('Address', function() {
     });
   });
 
+  describe('#getScriptPubKey', function() {
+    var data = [
+      ['76a91423b7530a00dd7951e11791c529389421c0b8d83b88ac', 'mimoZNLcP2rrMRgdeX5PSnR7AjCqQveZZ4'],
+      ['a9147049be48e74a660157da3ed64569981592f7fa0587','2N3Ux1YTnt1ixofYvJfaabqZSj2MBF3jsmv'],
+      ['76a914774e603bafb717bd3f070e68bbcccfd907c77d1388ac', 'mrPnbY1yKDBsdgbHbS7kJ8GVm8F66hWHLE'],
+      ['76a914b00127584485a7cff0949ef0f6bc5575f06ce00d88ac', 'mwZabyZXg8JzUtFX1pkGygsMJjnuqiNhgd']
+    ];
+
+    it('validate scriptPubKey for a given address', function() {
+      for(var i in data) {
+          var d = data[i];
+          var b = new Address(d[1]).getScriptPubKey().getBuffer();
+          b.toString('hex').should.equal(d[0]);
+      }
+    });
+  });
 
   describe('#fromScriptPubKey', function() {
 

test/test.TransactionBuilder.js

@@ -7,6 +7,7 @@ var bitcore = bitcore || require('../bitcore');
 var should = chai.should();
 
 var TransactionBuilder = bitcore.TransactionBuilder;
+var Address = bitcore.Address;
 var WalletKey = bitcore.WalletKey;
 var Script = bitcore.Script;
 var util = bitcore.util;
@@ -818,7 +819,7 @@ describe('TransactionBuilder', function() {
     }];
     //info.scriptBufHex,
 
-    var s =  TransactionBuilder.scriptForAddress(info.address)
+    var s =  new Address(info.address).getScriptPubKey()
                             .getBuffer().toString('hex');
 
     var b =  new TransactionBuilder(opts)