Add test for connectionString property delegation

index.js

@@ -96,7 +96,7 @@ Pool.prototype._create = function (cb) {
   client.connect(function (err) {
     if (err) {
       this.log('client connection error:', err)
-      cb(err)
+      cb(err, client)
     } else {
       this.log('client connected')
       this.emit('connect', client)

test/connection-strings.js

@@ -0,0 +1,22 @@
+var expect = require('expect.js')
+var describe = require('mocha').describe
+var it = require('mocha').it
+var Pool = require('../')
+
+describe('Connection strings', function () {
+  it('pool delegates connectionString property to client', function () {
+    var pool = new Pool({
+      connectionString: 'postgres://foo:bar@baz:1234/xur'
+    })
+    pool.connect(function (err, client) {
+      expect(err).to.not.be(undefined)
+      expect(client).to.not.be(undefined)
+      expect(client.username).to.equal('foo')
+      expect(client.password).to.equal('bar')
+      expect(client.database).to.equal('baz')
+      expect(client.port).to.equal(1234)
+      expect(client.database).to.equal('xur')
+    })
+  })
+})
+