fix(connections): get db version via write replication config if defined, closes #4838

lib/dialects/abstract/connection-manager.js

@@ -212,7 +212,7 @@ ConnectionManager.prototype.getConnection = function(options) {
     if (this.versionPromise) {
       promise = this.versionPromise;
     } else {
-      promise = this.versionPromise = self.$connect(self.config).then(function (connection) {
+      promise = this.versionPromise = self.$connect(self.config.replication.write || self.config).then(function (connection) {
         var _options = {};
         _options.transaction = { connection: connection }; // Cheat .query to use our private connection
         _options.logging = function () {};

test/integration/replication.test.js

+'use strict';
+
+/* jshint -W030 */
+/* jshint -W110 */
+var chai = require('chai')
+  , Sequelize = require('../../index')
+  , expect = chai.expect
+  , Support = require(__dirname + '/support')
+  , DataTypes = require(__dirname + '/../../lib/data-types')
+  , dialect = Support.getTestDialect()
+  , sinon = require('sinon')
+  , _ = require('lodash')
+  , moment = require('moment')
+  , Promise = require('bluebird');
+
+describe(Support.getTestDialectTeaser('Replication'), function() {
+  if (dialect === 'sqlite') return;
+
+  beforeEach(function () {
+    this.sequelize = Support.getSequelizeInstance(null, null, null, {
+      replication: {
+        // Just need empty objects, sequelize will copy in defaults
+        write: Support.getConnectionOptions(),
+        read: [Support.getConnectionOptions()]
+      }
+    });
+
+    expect(this.sequelize.connectionManager.pool.write).to.be.ok;
+    expect(this.sequelize.connectionManager.pool.read).to.be.ok;
+
+    this.User = this.sequelize.define('User', {
+      firstName: {
+        type: DataTypes.STRING,
+        field: 'first_name'
+      }
+    });
+
+    return this.User.sync({force: true});
+  });
+
+  it('should be able to make a write', function () {
+    return this.User.create({
+      firstName: Math.random().toString()
+    });
+  });
+
+  it('should be able to make a read', function () {
+    return this.User.findAll();
+  });
+});
\ No newline at end of file

test/support.js

@@ -110,6 +110,14 @@ var Support = {
     return this.getSequelizeInstance(config.database, config.username, config.password, sequelizeOptions);
   },
 
+  getConnectionOptions: function(options) {
+    var config = Config[this.getTestDialect()];
+
+    delete config.pool;
+
+    return config;
+  },
+
   getSequelizeInstance: function(db, user, pass, options) {
     options = options || {};
     options.dialect = options.dialect || this.getTestDialect();