Fix mset transformer not supporting keyPrefix. Close #217

.travis.yml

@@ -12,7 +12,7 @@ services:
 - redis-server
 
 script:
-- npm run test:cov || npm run test:cov
+- npm run test:cov || npm run test:cov || npm run test:cov
 
 env:
 - CXX=g++-4.8 INSTALL_HIREDIS="yes"

Changelog.md

@@ -4,6 +4,8 @@ This file is a manually maintained list of changes for each release. Feel free t
 
 ## Master Branch (Unreleased)
 
+* Fix `mset` transformer not supporting keyPrefix ([#217](https://github.com/luin/ioredis/issues/217)).
+
 ## v.1.13.0 - December 13, 2015
 
 * [Cluster] Select a random node when the target node is closed.

lib/command.js

@@ -46,14 +46,15 @@ function Command(name, args, options, callback) {
   this.replyEncoding = options.replyEncoding;
   this.errorStack = options.errorStack;
   this.args = args ? _.flatten(args) : [];
+  this.callback = callback;
+  this.initPromise();
+
   var keyPrefix = options.keyPrefix;
   if (keyPrefix) {
     this._iterateKeys(function (key) {
       return keyPrefix + key;
     });
   }
-  this.callback = callback;
-  this.initPromise();
 }
 
 Command.prototype.initPromise = function () {

test/functional/transformer.js

@@ -78,6 +78,17 @@ describe('transformer', function () {
           });
         });
       });
+      it('should work with keyPrefix option', function (done) {
+        var redis = new Redis({ keyPrefix: 'foo:' });
+        redis.mset({ a: 1, b: '2' }, function (err, result) {
+          expect(result).to.eql('OK');
+          var otherRedis = new Redis();
+          otherRedis.mget('foo:a', 'foo:b', function (err, result) {
+            expect(result).to.eql(['1', '2']);
+            done();
+          });
+        });
+      });
     });
 
     describe('hgetall', function () {