groupedLimit.test.js
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'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
, Promise = current.Promise
, _ = require('lodash');
if (current.dialect.supports['UNION ALL']) {
describe(Support.getTestDialectTeaser('Model'), function() {
describe('findAll', function () {
describe('groupedLimit', function () {
beforeEach(function () {
this.User = this.sequelize.define('user', {
age: Sequelize.INTEGER
});
this.Project = this.sequelize.define('project', {
title: DataTypes.STRING
});
this.Task = this.sequelize.define('task');
this.ProjectUser = this.sequelize.define('project_user', {}, {timestamps: false});
this.User.Projects = this.User.belongsToMany(this.Project, {through: this.ProjectUser});
this.Project.belongsToMany(this.User, {as: 'members', through: this.ProjectUser});
this.User.Tasks = this.User.hasMany(this.Task);
return this.sequelize.sync({force: true}).bind(this).then(function() {
return Promise.join(
this.User.bulkCreate([{age: -5}, {age: 45}, {age: 7}, {age: -9}, {age: 8}, {age: 15}, {age: -9}]),
this.Project.bulkCreate([{}, {}]),
this.Task.bulkCreate([{}, {}])
);
})
.then(function() { return [this.User.findAll(), this.Project.findAll(), this.Task.findAll()]; })
.spread(function (users, projects, tasks) {
this.projects = projects;
return Promise.join(
projects[0].setMembers(users.slice(0, 4)),
projects[1].setMembers(users.slice(2)),
users[2].setTasks(tasks)
);
});
});
describe('on: belongsToMany', function () {
it('maps attributes from a grouped limit to models', function () {
return this.User.findAll({
groupedLimit: {
limit: 3,
on: this.User.Projects,
values: this.projects.map(function (item) { return item.get('id'); })
}
}).then(function (users) {
expect(users).to.have.length(5);
users.filter(function (u) { return u.get('id') !== 3; }).forEach(function (u) {
expect(u.get('project_users')).to.have.length(1);
});
users.filter(function (u) { return u.get('id') === 3; }).forEach(function(u) {
expect(u.get('project_users')).to.have.length(2);
});
});
});
it('maps attributes from a grouped limit to models with include', function () {
return this.User.findAll({
groupedLimit: {
limit: 3,
on: this.User.Projects,
values: this.projects.map(function (item) { return item.get('id'); })
},
order: ['id'],
include: [this.User.Tasks]
}).then(function (users) {
/*
project1 - 1, 2, 3
project2 - 3, 4, 5
*/
expect(users).to.have.length(5);
expect(users.map(function (u) { return u.get('id'); })).to.deep.equal([1, 2, 3, 4, 5]);
expect(users[2].get('tasks')).to.have.length(2);
users.filter(function (u) { return u.get('id') !== 3; }).forEach(function (u) {
expect(u.get('project_users')).to.have.length(1);
});
users.filter(function (u) { return u.get('id') === 3; }).forEach(function(u) {
expect(u.get('project_users')).to.have.length(2);
});
});
});
it('works with computed order', function () {
return this.User.findAll({
attributes: ['id'],
groupedLimit: {
limit: 3,
on: this.User.Projects,
values: this.projects.map(function (item) { return item.get('id'); })
},
order: [
Sequelize.fn('ABS', Sequelize.col('age'))
],
include: [this.User.Tasks]
}).then(function (users) {
/*
project1 - 1, 3, 4
project2 - 3, 5, 4
*/
expect(users).to.have.length(4);
expect(users.map(function(u) { return u.get('id'); })).to.deep.equal([1, 3, 5, 4]);
});
});
it('works with multiple orders', function () {
return this.User.findAll({
attributes: ['id'],
groupedLimit: {
limit: 3,
on: this.User.Projects,
values: this.projects.map(function (item) { return item.get('id'); })
},
order: [
Sequelize.fn('ABS', Sequelize.col('age')),
['id', 'DESC']
],
include: [this.User.Tasks]
}).then(function (users) {
/*
project1 - 1, 3, 4
project2 - 3, 5, 7
*/
expect(users).to.have.length(5);
expect(users.map(function (u) { return u.get('id'); })).to.deep.equal([1, 3, 5, 7, 4]);
});
});
});
describe('on: hasMany', function () {
beforeEach(function () {
this.User = this.sequelize.define('user');
this.Task = this.sequelize.define('task');
this.User.Tasks = this.User.hasMany(this.Task);
return this.sequelize.sync({force: true}).bind(this).then(function() {
return Promise.join(
this.User.bulkCreate([{}, {}, {}]),
this.Task.bulkCreate([{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}])
);
})
.then(function() { return [this.User.findAll(), this.Task.findAll()]; })
.spread(function(users, tasks) {
this.users = users;
return Promise.join(
users[0].setTasks(tasks[0]),
users[1].setTasks(tasks.slice(1, 4)),
users[2].setTasks(tasks.slice(4))
);
});
});
it('Applies limit and order correctly', function () {
return this.Task.findAll({
order: [
['id', 'DESC']
],
groupedLimit: {
limit: 3,
on: this.User.Tasks,
values: this.users.map(function (item) { return item.get('id'); })
}
}).then(function (tasks) {
var byUser = _.groupBy(tasks, _.property('userId'));
expect(Object.keys(byUser)).to.have.length(3);
expect(byUser[1]).to.have.length(1);
expect(byUser[2]).to.have.length(3);
expect(_.invokeMap(byUser[2], 'get', 'id')).to.deep.equal([4, 3, 2]);
expect(byUser[3]).to.have.length(2);
});
});
});
});
});
});
}