Added test for empty strings

test/integration/test-empty-string.js

@@ -0,0 +1,39 @@
+var common = require('../common');
+var assert = common.assert;
+var CombinedStream = common.CombinedStream;
+var util = require('util');
+var Stream = require('stream').Stream;
+
+var s = CombinedStream.create();
+
+
+function StringStream(){
+  this.writable=true;
+  this.str=""
+}
+util.inherits(StringStream,Stream);
+
+StringStream.prototype.write=function(chunk,encoding){
+  this.str+=chunk.toString();
+  this.emit('data',chunk);
+}
+
+StringStream.prototype.end=function(chunk,encoding){
+  this.emit('end');
+}
+
+StringStream.prototype.toString=function(){
+  return this.str;
+}
+
+
+s.append("foo.");
+s.append("");
+s.append("bar");
+
+var ss = new StringStream();
+
+s.pipe(ss);
+s.resume();
+
+assert.equal(ss.toString(),"foo.bar");