diff --git a/test/test-helper.js b/test/test-helper.js
index 355c0cad..25276113 100644
--- a/test/test-helper.js
+++ b/test/test-helper.js
@@ -34,7 +34,8 @@ stringToHex = function(string) {
 hexToString = function(hexArray) {
   return new Buffer(hexArray).toString('utf8');
 }
-var BufferList = function() {
+
+BufferList = function() {
   this.buffers = [];
 };
 
@@ -84,3 +85,11 @@ BufferList.prototype.join = function(appendLength, char) {
   });
   return result;
 };
+
+BufferList.concat = function() {
+  var total = new BufferList();
+  for(var i = 0; i < arguments.length; i++) {
+    total.add(arguments[i]);
+  }
+  return total.join();
+};
diff --git a/test/writer-tests.js b/test/writer-tests.js
index 93312fda..e69aeb40 100644
--- a/test/writer-tests.js
+++ b/test/writer-tests.js
@@ -63,3 +63,10 @@ test('does complicated buffer', function() {
     .join(true,'!');
   assert.equalBuffers(buf, [33, 0, 0, 0, 0x0c, 0, 0, 0, 1, 0, 2, 33, 0]);
 });
+
+test('concats', function() {
+  var buf1 = new BufferList().addInt32(8).join(false,'!');
+  var buf2 = new BufferList().addInt16(1).join();
+  var result = BufferList.concat(buf1, buf2);
+  assert.equalBuffers(result, [33, 0, 0, 0, 8, 0, 1]);
+});