Fix for count with scope containing an include

lib/model.js

@@ -2608,6 +2608,10 @@ Model.prototype.$expandAttributes = function (options) {
 
 // Inject current scope into options. Includes should have been conformed (conformOptions) before calling this
 Model.$injectScope = function (scope, options) {
+  // Do not inject scope more than once.
+  if (options._scopeInjected) return;
+  options._scopeInjected = true;
+
   scope = optClone(scope);
 
   var filteredScope = _.omit(scope, 'include'); // Includes need special treatment

test/integration/model/count.test.js

+'use strict';
+
+/* jshint -W030 */
+/* jshint -W110 */
+var chai = require('chai')
+  , expect = chai.expect
+  , Support = require(__dirname + '/../support')
+  , DataTypes = require(__dirname + '/../../../lib/data-types');
+
+describe(Support.getTestDialectTeaser('Model'), function() {
+  beforeEach(function() {
+    this.User = this.sequelize.define('User', {
+      username: DataTypes.STRING
+    });
+    this.Project = this.sequelize.define('Project', {
+      name: DataTypes.STRING
+    });
+
+    this.User.hasMany(this.Project);
+    this.Project.belongsTo(this.User);
+
+    return this.sequelize.sync({force: true});
+  });
+
+  describe('count', function() {
+    beforeEach(function () {
+      var self = this;
+      return this.User.bulkCreate([
+        {username: 'boo'},
+        {username: 'boo2'}
+      ]).then(function () {
+        return self.User.findOne();
+      }).then(function (user) {
+        return user.createProject({
+          name: 'project1'
+        });
+      });
+    });
+
+    it('should counts rows', function () {
+      return expect(this.User.count()).to.eventually.equal(2);
+    });
+
+    it('should supports include', function () {
+      return expect(this.User.count({
+        include: [{
+          model: this.Project,
+          where: {
+            name: 'project1'
+          }
+        }]
+      })).to.eventually.equal(1);
+    });
+  });
+});

test/integration/model/scope/count.test.js

@@ -5,12 +5,16 @@
 var chai = require('chai')
   , Sequelize = require('../../../../index')
   , expect = chai.expect
+  , Promise = require(__dirname + '/../../../../lib/promise')
   , Support = require(__dirname + '/../../support');
 
 describe(Support.getTestDialectTeaser('Model'), function() {
   describe('scope', function () {
     describe('count', function () {
       beforeEach(function () {
+        this.Child = this.sequelize.define('Child', {
+          priority: Sequelize.INTEGER
+        });
         this.ScopeMe = this.sequelize.define('ScopeMe', {
           username: Sequelize.STRING,
           email: Sequelize.STRING,
@@ -23,7 +27,7 @@ describe(Support.getTestDialectTeaser('Model'), function() {
                 gte: 5
               }
             },
-            attributes: ['username', 'email', 'access_level']
+            attributes: ['id', 'username', 'email', 'access_level']
           },
           scopes: {
             lowAccess: {
@@ -35,11 +39,21 @@ describe(Support.getTestDialectTeaser('Model'), function() {
             },
             withOrder: {
               order: 'username'
+            },
+            withInclude: {
+              include: [{
+                model: this.Child,
+                where: {
+                  priority: 1
+                }
+              }]
             }
           }
         });
+        this.Child.belongsTo(this.ScopeMe);
+        this.ScopeMe.hasMany(this.Child);
 
-        return this.sequelize.sync({force: true}).then(function() {
+        return this.sequelize.sync({force: true}).then(function () {
           var records = [
             {username: 'tony', email: 'tony@sequelizejs.com', access_level: 3, other_value: 7},
             {username: 'tobi', email: 'tobi@fakeemail.com', access_level: 10, other_value: 11},
@@ -47,7 +61,18 @@ describe(Support.getTestDialectTeaser('Model'), function() {
             {username: 'fred', email: 'fred@foobar.com', access_level: 3, other_value: 7}
           ];
           return this.ScopeMe.bulkCreate(records);
-        }.bind(this));
+        }.bind(this)).then(function () {
+          return this.ScopeMe.findAll();
+        }.bind(this)).then(function (records) {
+          return Promise.all([
+            records[0].createChild({
+              priority: 1
+            }),
+            records[1].createChild({
+              priority: 2
+            })
+          ]);
+        });
       });
 
       it('should apply defaultScope', function () {
@@ -73,6 +98,10 @@ describe(Support.getTestDialectTeaser('Model'), function() {
       it('should ignore the order option if it is found within the scope', function () {
         return expect(this.ScopeMe.scope('withOrder').count()).to.eventually.equal(4);
       });
+
+      it('should be able to use where on include', function () {
+        return expect(this.ScopeMe.scope('withInclude').count()).to.eventually.equal(1);
+      });
     });
   });
 });

test/unit/model/scope.test.js

@@ -254,6 +254,7 @@ describe(Support.getTestDialectTeaser('Model'), function() {
       };
 
       current.Model.$injectScope(scope, options);
+      delete options._scopeInjected;
 
       expect(options).to.deep.equal({
         where: {