From d2b790fef93c998f90085aefa83156a7bbfd6e10 Mon Sep 17 00:00:00 2001
From: Wei Lu <luwei.here@gmail.com>
Date: Sun, 9 Mar 2014 13:43:36 +0800
Subject: [PATCH] throw error when input to script constructor is not an array

[#58]
---
 src/script.js  |  3 +++
 test/script.js | 17 +++++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 test/script.js

diff --git a/src/script.js b/src/script.js
index 1b48500..aa99322 100644
--- a/src/script.js
+++ b/src/script.js
@@ -6,6 +6,9 @@ var network = require('./network');
 
 var Script = function(data) {
     this.buffer = data || [];
+    if(!Array.isArray(data)) {
+      throw new Error('expect Script to be initialized with Array, but got ' + data)
+    }
     this.parse();
 };
 
diff --git a/test/script.js b/test/script.js
new file mode 100644
index 0000000..2850fc7
--- /dev/null
+++ b/test/script.js
@@ -0,0 +1,17 @@
+var Script = require('../src/script.js')
+var assert = require('assert')
+
+describe('Script', function() {
+  describe('constructor', function() {
+    it('works for a byte array', function() {
+      assert.ok(new Script([]))
+    })
+
+    it('throws an error when input is not an array', function() {
+      assert.throws(function(){
+        new Script({})
+      })
+    })
+  })
+
+})