Add unit test for updated join table attributes in dobule linked has-many associations

test/associations/has-many.test.js

@@ -338,6 +338,35 @@ describe(Support.getTestDialectTeaser("HasMany"), function() {
           })
           })
         })
         })
       })
       })
+
+      it('allows to update join table attributes with primary keys other than "id"', function () {
+        var Article = this.sequelize.define('Article', {aid: {type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true}, title: DataTypes.STRING})
+          , Label = this.sequelize.define('Label', {lid: {type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true}, text: DataTypes.STRING})
+          , ArticleHasLabel = this.sequelize.define('ArticleHasLabel', {color: DataTypes.ENUM(["red", "green", "blue"])})
+
+        Article.hasMany(Label, {through: ArticleHasLabel})
+        Label.hasMany(Article, {through: ArticleHasLabel})
+
+        return this.sequelize.sync({ force: true }).then(function () {
+          return Article.create().then(function (article) {
+            return Label.create({ text: "cheap" }).then(function (label1) {
+              return Label.create({ text: "steal" }).then(function (label2) {
+                label2.ArticleHasLabel = {color: "green"}
+                return article.setLabels([label1, label2]).then(function () {
+                  label1.ArticleHasLabel = {color: "red"}
+                  article.setLabels([label1, label2]).then(function () {
+                    article.getLabels().then(function (labels) {
+                      expect(labels).to.have.length(2)
+                      expect(labels[0].ArticleHasLabel.color).to.equal("red")
+                      expect(labels[1].ArticleHasLabel.color).to.equal("green")
+                    })
+                  })
+                })
+              })
+            })
+          })
+        })
+      })
     })
     })
 
 
     describe('addAssociations', function() {
     describe('addAssociations', function() {