has-many.test.js
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'use strict';
/* jshint -W030 */
var chai = require('chai')
, sinon = require('sinon')
, expect = chai.expect
, stub = sinon.stub
, Support = require(__dirname + '/../support')
, DataTypes = require(__dirname + '/../../../lib/data-types')
, current = Support.sequelize
, Promise = current.Promise;
describe(Support.getTestDialectTeaser('hasMany'), function() {
describe('optimizations using bulk create, destroy and update', function() {
var User = current.define('User', { username: DataTypes.STRING })
, Task = current.define('Task', { title: DataTypes.STRING });
User.hasMany(Task);
var user = User.build({
id: 42
}),
task1 = Task.build({
id: 15
}),
task2 = Task.build({
id: 16
});
beforeEach(function () {
this.findAll = stub(Task, 'findAll').returns(Promise.resolve([]));
this.update = stub(Task, 'update').returns(Promise.resolve([]));
});
afterEach(function () {
this.findAll.restore();
this.update.restore();
});
it('uses one update statement for addition', function() {
return user.setTasks([task1, task2]).bind(this). then(function() {
expect(this.findAll).to.have.been.calledOnce;
expect(this.update).to.have.been.calledOnce;
});
});
it('uses one delete from statement', function() {
this.findAll
.onFirstCall().returns(Promise.resolve([]))
.onSecondCall().returns(Promise.resolve([
{ userId: 42, taskId: 15 },
{ userId: 42, taskId: 16 }
]));
return user.setTasks([task1, task2]).bind(this).then(function () {
this.update.reset();
return user.setTasks(null);
}).then(function () {
expect(this.findAll).to.have.been.calledTwice;
expect(this.update).to.have.been.calledOnce;
});
});
});
});