Merge pull request #303 from bitcoinjs/datascript

scripts: add dataOutput convenience function

Author: weilu

src/scripts.js

@@ -241,9 +241,14 @@ function multisigInput(signatures, scriptPubKey) {
  return Script.fromChunks([].concat(ops.OP_0, signatures))
 }
 
+function dataOutput(data) {
+ return Script.fromChunks([ops.OP_RETURN, data])
+}
+
 module.exports = {
  classifyInput: classifyInput,
  classifyOutput: classifyOutput,
+ dataOutput: dataOutput,
  multisigInput: multisigInput,
  multisigOutput: multisigOutput,
  pubKeyHashInput: pubKeyHashInput,

test/fixtures/scripts.json

@@ -51,7 +51,8 @@
  },
  {
  "type": "nulldata",
- "scriptPubKey": "OP_RETURN ffffffffffffffffffffffffffffffffffffffff"
+ "data": "deadffffffffffffffffffffffffffffffffbeef",
+ "scriptPubKey": "OP_RETURN deadffffffffffffffffffffffffffffffffbeef"
  }
  ],
  "invalid": {

test/scripts.js

@@ -184,4 +184,19 @@ describe('Scripts', function() {
  })
  })
  })
+
+ describe('data', function() {
+ fixtures.valid.forEach(function(f) {
+ if (f.type !== 'nulldata') return
+
+ var data = new Buffer(f.data, 'hex')
+ var scriptPubKey = scripts.dataOutput(data)
+
+ describe('output script', function() {
+ it('is generated correctly for ' + f.scriptPubKey, function() {
+ assert.equal(scriptPubKey.toASM(), f.scriptPubKey)
+ })
+ })
+ })
+ })
 })