Throw ForeignKeyConstraintError in mssql when trying to set an association that doesn't exist

lib/dialects/mssql/query.js

@@ -200,8 +200,10 @@ Query.prototype.formatError = function (err) {
     });
   }
 
-  match = err.message.match(/Failed on step '(.*)'.Could not create constraint. See previous errors./);
-  match = err.message.match(/The DELETE statement conflicted with the REFERENCE constraint "(.*)". The conflict occurred in database "(.*)", table "(.*)", column '(.*)'./);
+  match = err.message.match(/Failed on step '(.*)'.Could not create constraint. See previous errors./) ||
+          err.message.match(/The DELETE statement conflicted with the REFERENCE constraint "(.*)". The conflict occurred in database "(.*)", table "(.*)", column '(.*)'./) ||
+          err.message.match(/The INSERT statement conflicted with the FOREIGN KEY constraint "(.*)". The conflict occurred in database "(.*)", table "(.*)", column '(.*)'./) ||
+          err.message.match(/The UPDATE statement conflicted with the FOREIGN KEY constraint "(.*)". The conflict occurred in database "(.*)", table "(.*)", column '(.*)'./);
   if (match && match.length > 0) {
     return new sequelizeErrors.ForeignKeyConstraintError({
       fields: null,

test/integration/associations/belongs-to.test.js

@@ -225,6 +225,21 @@ describe(Support.getTestDialectTeaser('BelongsTo'), function() {
       });
     });
 
+    it('should throw a ForeignKeyConstraintError if the associated record does not exist', function() {
+      var User = this.sequelize.define('UserXYZ', { username: DataTypes.STRING })
+        , Task = this.sequelize.define('TaskXYZ', { title: DataTypes.STRING });
+
+      Task.belongsTo(User);
+
+      return this.sequelize.sync({ force: true }).then(function() {
+        return expect(Task.create({ title: 'task', UserXYZId: 5 })).to.be.rejectedWith(Sequelize.ForeignKeyConstraintError).then(function () {
+          return Task.create({ title: 'task' }).then(function(task) {
+            return expect(Task.update({ title: 'taskUpdate', UserXYZId: 5 }, { where: { id: task.id } })).to.be.rejectedWith(Sequelize.ForeignKeyConstraintError);
+          });
+        });
+      });
+    });
+
     it('supports passing the primary key instead of an object', function() {
       var User = this.sequelize.define('UserXYZ', { username: DataTypes.STRING })
         , Task = this.sequelize.define('TaskXYZ', { title: DataTypes.STRING });

test/integration/associations/has-one.test.js

@@ -182,6 +182,23 @@ describe(Support.getTestDialectTeaser('HasOne'), function() {
       });
     });
 
+    it('should throw a ForeignKeyConstraintError if the associated record does not exist', function() {
+      var User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING })
+        , Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING });
+
+      User.hasOne(Task);
+
+      return User.sync({ force: true }).then(function() {
+        return Task.sync({ force: true }).then(function() {
+          return expect(Task.create({ title: 'task', UserXYZId: 5 })).to.be.rejectedWith(Sequelize.ForeignKeyConstraintError).then(function () {
+            return Task.create({ title: 'task' }).then(function(task) {
+              return expect(Task.update({ title: 'taskUpdate', UserXYZId: 5 }, { where: { id: task.id } })).to.be.rejectedWith(Sequelize.ForeignKeyConstraintError);
+            });
+          });
+        });
+      });
+    });
+
     it('supports passing the primary key instead of an object', function() {
       var User = this.sequelize.define('UserXYZ', { username: Sequelize.STRING })
         , Task = this.sequelize.define('TaskXYZ', { title: Sequelize.STRING });