const sinon = require('sinon') const chai = require('chai') const { expect } = chai const SandboxedModule = require('sandboxed-module') const modulePath = require('path').join( __dirname, '../../../app/js/LearnedWordsManager' ) const { assert } = require('chai') describe('LearnedWordsManager', function() { beforeEach(function() { this.token = 'a6b3cd919ge' this.callback = sinon.stub() this.db = { spellingPreferences: { update: sinon.stub().yields() } } this.cache = { get: sinon.stub(), set: sinon.stub(), del: sinon.stub() } this.LearnedWordsManager = SandboxedModule.require(modulePath, { globals: { console: console }, requires: { './DB': this.db, './MongoCache': this.cache, 'logger-sharelatex': { log() {}, err() {}, info() {} }, 'metrics-sharelatex': { timeAsyncMethod: sinon.stub(), inc: sinon.stub() } } }) }) describe('learnWord', function() { beforeEach(function() { this.word = 'instanton' this.LearnedWordsManager.learnWord(this.token, this.word, this.callback) }) it('should insert the word in the word list in the database', function() { expect( this.db.spellingPreferences.update.calledWith( { token: this.token }, { $addToSet: { learnedWords: this.word } }, { upsert: true } ) ).to.equal(true) }) it('should call the callback', function() { expect(this.callback.called).to.equal(true) }) }) describe('unlearnWord', function() { beforeEach(function() { this.word = 'instanton' this.LearnedWordsManager.unlearnWord(this.token, this.word, this.callback) }) it('should remove the word from the word list in the database', function() { expect( this.db.spellingPreferences.update.calledWith( { token: this.token }, { $pull: { learnedWords: this.word } } ) ).to.equal(true) }) it('should call the callback', function() { expect(this.callback.called).to.equal(true) }) }) describe('getLearnedWords', function() { beforeEach(function() { this.wordList = ['apples', 'bananas', 'pears'] this.wordListWithDuplicates = this.wordList.slice() this.wordListWithDuplicates.push('bananas') this.db.spellingPreferences.findOne = (conditions, callback) => { callback(null, { learnedWords: this.wordListWithDuplicates }) } sinon.spy(this.db.spellingPreferences, 'findOne') this.LearnedWordsManager.getLearnedWords(this.token, this.callback) }) it('should get the word list for the given user', function() { expect( this.db.spellingPreferences.findOne.calledWith({ token: this.token }) ).to.equal(true) }) it('should return the word list in the callback without duplicates', function() { expect(this.callback.calledWith(null, this.wordList)).to.equal(true) }) }) describe('caching the result', function() { it('should use the cache first if it is primed', function(done) { this.wordList = ['apples', 'bananas', 'pears'] this.cache.get.returns(this.wordList) this.db.spellingPreferences.findOne = sinon.stub() this.LearnedWordsManager.getLearnedWords(this.token, (err, spellings) => { expect(err).not.to.exist this.db.spellingPreferences.findOne.called.should.equal(false) assert.deepEqual(this.wordList, spellings) done() }) }) it('should set the cache after hitting the db', function(done) { this.wordList = ['apples', 'bananas', 'pears'] this.db.spellingPreferences.findOne = sinon .stub() .callsArgWith(1, null, { learnedWords: this.wordList }) this.LearnedWordsManager.getLearnedWords(this.token, () => { this.cache.set.calledWith(this.token, this.wordList).should.equal(true) done() }) }) it('should break cache when update is called', function(done) { this.word = 'instanton' this.LearnedWordsManager.learnWord(this.token, this.word, () => { this.cache.del.calledWith(this.token).should.equal(true) done() }) }) }) describe('deleteUsersLearnedWords', function() { beforeEach(function() { this.db.spellingPreferences.remove = sinon.stub().callsArgWith(1) }) it('should get the word list for the given user', function(done) { this.LearnedWordsManager.deleteUsersLearnedWords(this.token, () => { this.db.spellingPreferences.remove .calledWith({ token: this.token }) .should.equal(true) done() }) }) }) })