Add 'connect' event to pool (#7)

* Have pool emit 'connect' callback with client

* Ensure pool emits client on connect event

index.js

@@ -14,6 +14,7 @@ var Pool = module.exports = function (options, Client) {
   this.options.create = this.options.create || this._create.bind(this)
   this.options.destroy = this.options.destroy || this._destroy.bind(this)
   this.pool = new genericPool.Pool(this.options)
+  this.onCreate = this.options.onCreate
 }
 
 util.inherits(Pool, EventEmitter)
@@ -37,6 +38,7 @@ Pool.prototype._create = function (cb) {
 
   client.connect(function (err) {
     this.log('client connected')
+    this.emit('connect', client)
     if (err) {
       this.log('client connection error:', err)
       cb(err)

test/events.js

@@ -0,0 +1,24 @@
+var expect = require('expect.js')
+
+var describe = require('mocha').describe
+var it = require('mocha').it
+
+var Pool = require('../')
+
+describe('events', function () {
+  it('emits connect before callback', function (done) {
+    var pool = new Pool()
+    var emittedClient = false
+    pool.on('connect', function (client) {
+      emittedClient = client
+    })
+
+    pool.connect(function (err, client, release) {
+      if (err) return done(err)
+      release()
+      pool.end()
+      expect(client).to.be(emittedClient)
+      done()
+    })
+  })
+})