Fix query error emit on native bindings

Author: brianc

lib/native/query.js

@@ -27,6 +27,7 @@ var NativeQuery = function(config, values, callback) {
 
   this._result = new Result(config.rowMode);
   this._addedFields = false;
+  this._hadError = false;
   //normalize values
   if(this.values) {
     for(var i = 0, len = this.values.length; i < len; i++) {
@@ -55,6 +56,7 @@ NativeQuery.prototype.handleError = function(error) {
     error = this._canceledDueToError;
     this._canceledDueToError = false;
   }
+  this._hadError = true;
   if(this.callback) {
     var cb = this.callback;
     //remove callback to prevent double call on readyForQuery
@@ -66,6 +68,7 @@ NativeQuery.prototype.handleError = function(error) {
 };
 
 NativeQuery.prototype.handleReadyForQuery = function(meta) {
+  if(this._hadError) return;
   if (this._canceledDueToError) {
     return this.handleError(this._canceledDueToError);
   }

test/integration/client/query-error-handling-tests.js

@@ -20,7 +20,7 @@ test('error during query execution', function() {
       //because it was killed and received an error
       //https://github.com/brianc/node-postgres/issues/547
       query1.on('end', function() {
-        assert.fail('Client with an error should not emit "end" event')
+        assert.fail('Query with an error should not emit "end" event')
       })
       var client2 = new Client(helper.args);
       client2.connect(assert.success(function() {