(test) #3009, Group by with subQUery attributes works

test/integration/model/findAll/group.test.js

+'use strict';
+
+/* jshint -W030 */
+var chai = require('chai')
+, expect = chai.expect
+, Support = require(__dirname + '/../../support')
+, Sequelize = Support.Sequelize
+, DataTypes = require(__dirname + '/../../../../lib/data-types')
+, current = Support.sequelize;
+
+describe(Support.getTestDialectTeaser('Model'), function() {
+  describe('findAll', function () {
+    describe('group', function () {
+      it('should correctly group with attributes, #3009', function() {
+
+        var Post = current.define('Post', {
+          id: { type: DataTypes.INTEGER, autoIncrement: true, primaryKey: true },
+          name: { type: DataTypes.STRING, allowNull: false }
+        });
+
+        var Comment = current.define('Comment', {
+          id: { type: DataTypes.INTEGER, autoIncrement: true, primaryKey: true },
+          text: { type: DataTypes.STRING, allowNull: false }
+        });
+
+        Post.hasMany(Comment);
+
+        return current.sync({ force: true }).then(function() {
+          // Create an enviroment
+          return Post.bulkCreate([
+            { name: 'post-1' },
+            { name: 'post-2' }
+          ]);
+        }).then(function(u) {
+          return Comment.bulkCreate([
+            { text: 'Market', PostId: 1},
+            { text: 'Text', PostId: 2},
+            { text: 'Abc', PostId: 2},
+            { text: 'Semaphor', PostId: 1},
+            { text: 'Text', PostId: 1},
+          ]);
+        }).then(function(p) {
+          return Post.findAll({
+            attributes: [ [ Sequelize.fn('COUNT', Sequelize.col('Comments.id')), 'comment_count' ] ],
+            include: [
+              { model: Comment, attributes: [] }
+            ],
+            group: [ 'Post.id' ]
+          });
+        }).then(function(posts) {
+          expect(parseInt(posts[0].get('comment_count'))).to.be.equal(3);
+          expect(parseInt(posts[1].get('comment_count'))).to.be.equal(2);
+        });
+      });
+    });
+  });
+});