bugfix. sometimes native copy to loose rows

lib/copystream.js

@@ -114,12 +114,12 @@ CopyToStream.prototype._outputDataChunk = function () {
   }
   if (this.buffer.length) {
     if (this._encoding) {
-      this.emit('data', this.buffer.toString(encoding));
+      this.emit('data', this.buffer.toString(this._encoding));
     } else {
       this.emit('data', this.buffer);
     }
     this.buffer = new Buffer(0);
-  } 
+  }
 };
 CopyToStream.prototype._readable = function () {
   return !this._finished && !this._error;

lib/native/query.js

@@ -82,7 +82,7 @@ p.streamData = function (connection) {
 p.handleCopyFromChunk = function (chunk) {
   if ( this.stream ) {
     this.stream.handleChunk(chunk);
-  } 
+  }
   //if there are no stream (for example when copy to query was sent by
   //query method instead of copyTo) error will be handled 
   //on copyOutResponse event, so silently ignore this error here  

src/binding.cc

@@ -487,7 +487,7 @@ protected:
     copied = PQgetCopyData(connection_, &buffer, 1);
     while (copied > 0) { 
       chunk = Buffer::New(buffer, copied);
-      Handle<Value> node_chunk = chunk->handle_; 
+      Local<Value> node_chunk = Local<Value>::New(chunk->handle_); 
       Emit("copyData", &node_chunk);
       PQfreemem(buffer);
       copied = PQgetCopyData(connection_, &buffer, 1);

test/native/copyto-largedata-tests.js

@@ -9,15 +9,15 @@ test("COPY TO large amount of data from postgres", function () {
   var con = new Client(helper.config),
     rowCount = 100000,
     stdoutStream = con.copyTo('COPY (select generate_series(1, ' + rowCount + ')) TO STDOUT');
-  con.connect();
   stdoutStream.on('data', function () {
-    rowCount --;
+    rowCount--;
   });
   stdoutStream.on('end', function () {
-    assert.equal(rowCount, 1, "copy to should load exactly requested number of rows" + rowCount);
+    assert.equal(rowCount, 0, "copy to should load exactly requested number of rows");
     con.query("SELECT 1", assert.calls(function (error, result) {
       assert.ok(!error && result, "loading large amount of data by copy to should not break connection");
       con.end();
     }));
   });
+  con.connect();
 });