loopback-datasource-juggler/test/relations.test.js

297 lines
8.8 KiB
JavaScript

// This test written in mocha+should.js
var should = require('./init.js');
var db, Book, Chapter, Author, Reader, Publisher;
describe('relations', function () {
before(function (done) {
db = getSchema();
Book = db.define('Book', {name: String});
Chapter = db.define('Chapter', {name: {type: String, index: true}});
Author = db.define('Author', {name: String});
Reader = db.define('Reader', {name: String});
db.automigrate(function () {
Book.destroyAll(function () {
Chapter.destroyAll(function () {
Author.destroyAll(function () {
Reader.destroyAll(done);
});
});
});
});
});
after(function () {
// db.disconnect();
});
describe('hasMany', function () {
it('can be declared in different ways', function (done) {
Book.hasMany(Chapter);
Book.hasMany(Reader, {as: 'users'});
Book.hasMany(Author, {foreignKey: 'projectId'});
var b = new Book;
b.chapters.should.be.an.instanceOf(Function);
b.users.should.be.an.instanceOf(Function);
b.authors.should.be.an.instanceOf(Function);
Object.keys((new Chapter).toObject()).should.include('bookId');
Object.keys((new Author).toObject()).should.include('projectId');
db.automigrate(done);
});
it('can be declared in short form', function (done) {
Author.hasMany('readers');
(new Author).readers.should.be.an.instanceOf(Function);
Object.keys((new Reader).toObject()).should.include('authorId');
db.autoupdate(done);
});
it('should build record on scope', function (done) {
Book.create(function (err, book) {
var c = book.chapters.build();
c.bookId.should.equal(book.id);
c.save(done);
});
});
it('should create record on scope', function (done) {
Book.create(function (err, book) {
book.chapters.create(function (err, c) {
should.not.exist(err);
should.exist(c);
c.bookId.should.equal(book.id);
done();
});
});
});
it('should fetch all scoped instances', function (done) {
Book.create(function (err, book) {
book.chapters.create({name: 'a'}, function () {
book.chapters.create({name: 'z'}, function () {
book.chapters.create({name: 'c'}, function () {
fetch(book);
});
});
});
});
function fetch(book) {
book.chapters(function (err, ch) {
should.not.exist(err);
should.exist(ch);
ch.should.have.lengthOf(3);
book.chapters({order: 'name DESC'}, function (e, c) {
should.not.exist(e);
should.exist(c);
c.shift().name.should.equal('z');
c.pop().name.should.equal('a');
done();
});
});
}
});
it('should find scoped record', function (done) {
var id;
Book.create(function (err, book) {
book.chapters.create({name: 'a'}, function (err, ch) {
id = ch.id;
book.chapters.create({name: 'z'}, function () {
book.chapters.create({name: 'c'}, function () {
fetch(book);
});
});
});
});
function fetch(book) {
book.chapters.findById(id, function (err, ch) {
should.not.exist(err);
should.exist(ch);
ch.id.should.equal(id);
done();
});
}
});
it('should set targetClass on scope property', function() {
should.equal(Book.prototype.chapters._targetClass, 'Chapter');
});
});
describe('belongsTo', function () {
var List, Item, Fear, Mind;
it('can be declared in different ways', function () {
List = db.define('List', {name: String});
Item = db.define('Item', {name: String});
Fear = db.define('Fear');
Mind = db.define('Mind');
// syntax 1 (old)
Item.belongsTo(List);
Object.keys((new Item).toObject()).should.include('listId');
(new Item).list.should.be.an.instanceOf(Function);
// syntax 2 (new)
Fear.belongsTo('mind');
Object.keys((new Fear).toObject()).should.include('mindId');
(new Fear).mind.should.be.an.instanceOf(Function);
// (new Fear).mind.build().should.be.an.instanceOf(Mind);
});
it('can be used to query data', function (done) {
List.hasMany('todos', {model: Item});
db.automigrate(function () {
List.create(function (e, list) {
should.not.exist(e);
should.exist(list);
list.todos.create(function (err, todo) {
todo.list(function (e, l) {
should.not.exist(e);
should.exist(l);
l.should.be.an.instanceOf(List);
todo.list().should.equal(l.id);
done();
});
});
});
});
});
it('could accept objects when creating on scope', function (done) {
List.create(function (e, list) {
should.not.exist(e);
should.exist(list);
Item.create({list: list}, function (err, item) {
should.not.exist(err);
should.exist(item);
should.exist(item.listId);
item.listId.should.equal(list.id);
item.__cachedRelations.list.should.equal(list);
done();
});
});
});
});
describe('hasOne', function () {
var Supplier, Account;
before(function () {
db = getSchema();
Supplier = db.define('Supplier', {name: String});
Account = db.define('Account', {accountNo: String});
});
it('can be declared using hasOne method', function () {
Supplier.hasOne(Account);
Object.keys((new Account()).toObject()).should.include('supplierId');
(new Supplier()).account.should.be.an.instanceOf(Function);
});
it('can be used to query data', function (done) {
// Supplier.hasOne(Account);
db.automigrate(function () {
Supplier.create({name: 'Supplier 1'}, function (e, supplier) {
should.not.exist(e);
should.exist(supplier);
supplier.account.create({accountNo: 'a01'}, function (err, account) {
supplier.account(function (e, act) {
should.not.exist(e);
should.exist(act);
act.should.be.an.instanceOf(Account);
supplier.account().should.equal(act.id);
done();
});
});
});
});
});
});
describe('hasAndBelongsToMany', function () {
var Article, Tag, ArticleTag;
it('can be declared', function (done) {
Article = db.define('Article', {title: String});
Tag = db.define('Tag', {name: String});
Article.hasAndBelongsToMany('tags');
ArticleTag = db.models.ArticleTag;
db.automigrate(function () {
Article.destroyAll(function () {
Tag.destroyAll(function () {
ArticleTag.destroyAll(done)
});
});
});
});
it('should allow to create instances on scope', function (done) {
Article.create(function (e, article) {
article.tags.create({name: 'popular'}, function (e, t) {
t.should.be.an.instanceOf(Tag);
// console.log(t);
ArticleTag.findOne(function (e, at) {
should.exist(at);
at.tagId.toString().should.equal(t.id.toString());
at.articleId.toString().should.equal(article.id.toString());
done();
});
});
});
});
it('should allow to fetch scoped instances', function (done) {
Article.findOne(function (e, article) {
article.tags(function (e, tags) {
should.not.exist(e);
should.exist(tags);
done();
});
});
});
it('should allow to add connection with instance', function (done) {
Article.findOne(function (e, article) {
Tag.create({name: 'awesome'}, function (e, tag) {
article.tags.add(tag, function (e, at) {
should.not.exist(e);
should.exist(at);
at.should.be.an.instanceOf(ArticleTag);
at.tagId.should.equal(tag.id);
at.articleId.should.equal(article.id);
done();
});
});
});
});
it('should allow to remove connection with instance', function (done) {
Article.findOne(function (e, article) {
article.tags(function (e, tags) {
var len = tags.length;
tags.should.not.be.empty;
article.tags.remove(tags[0], function (e) {
should.not.exist(e);
article.tags(true, function (e, tags) {
tags.should.have.lengthOf(len - 1);
done();
});
});
});
});
});
it('should set targetClass on scope property', function() {
should.equal(Article.prototype.tags._targetClass, 'Tag');
});
});
});