From ef8f1eabd259781d84fe1dbf031d77a16b804bbf Mon Sep 17 00:00:00 2001
From: Manuel Araoz <manuelaraoz@gmail.com>
Date: Tue, 2 Dec 2014 14:19:56 -0300
Subject: [PATCH] add script.isStandard()

---
 lib/script.js  |  9 +++++++++
 test/script.js | 14 ++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/lib/script.js b/lib/script.js
index 94cb9c8..2474a5b 100644
--- a/lib/script.js
+++ b/lib/script.js
@@ -329,6 +329,15 @@ Script.prototype.classify = function() {
   return Script.types.UNKNOWN;
 };
 
+
+/**
+ * @returns true if script is one of the known types
+ */
+Script.prototype.isStandard = function() {
+  return this.classify() !== Script.types.UNKNOWN;
+};
+
+
 // Script construction methods
 
 /**
diff --git a/test/script.js b/test/script.js
index d61e53a..ce0d896 100644
--- a/test/script.js
+++ b/test/script.js
@@ -166,6 +166,11 @@ describe('Script', function() {
 
   describe('#toString', function() {
 
+    it('should work with an empty script', function() {
+      var script = new Script();
+      script.toString().should.equal('');
+    });
+
     it('should output this buffer an OP code, data, and another OP code', function() {
       var buf = new Buffer([0, 0, 0, 0, 0, 0, 1, 2, 3, 0]);
       buf[0] = Opcode('OP_0').toNumber();
@@ -361,4 +366,13 @@ describe('Script', function() {
     });
   });
 
+  describe('#isStandard', function() {
+    it('should classify correctly standard script', function() {
+      Script('OP_RETURN 1 0x00').isStandard().should.equal(true);
+    });
+    it('should classify correctly non standard script', function() {
+      Script('OP_TRUE OP_FALSE').isStandard().should.equal(false);
+    });
+  });
+
 });