import { expect } from 'chai' import request from 'request' import crypto from 'crypto' import mongodb from 'mongodb-legacy' import nock from 'nock' import * as ProjectHistoryClient from './helpers/ProjectHistoryClient.js' import * as ProjectHistoryApp from './helpers/ProjectHistoryApp.js' const { ObjectId } = mongodb const MockHistoryStore = () => nock('http://127.0.0.1:3100') const MockWeb = () => nock('http://127.0.0.1:3000') function createMockBlob(historyId, content) { const sha = crypto.createHash('sha1').update(content).digest('hex') MockHistoryStore() .get(`/api/projects/${historyId}/blobs/${sha}`) .reply(200, content) .persist() return sha } describe('Diffs', function () { beforeEach(function (done) { ProjectHistoryApp.ensureRunning(error => { if (error) { throw error } this.historyId = new ObjectId().toString() this.projectId = new ObjectId().toString() MockHistoryStore().post('/api/projects').reply(200, { projectId: this.historyId, }) MockWeb() .get(`/project/${this.projectId}/details`) .reply(200, { name: 'Test Project', overleaf: { history: { id: this.historyId } }, }) ProjectHistoryClient.initializeProject(this.historyId, error => { if (error) { return done(error) } done() }) }) }) afterEach(function () { nock.cleanAll() }) it('should return a diff of the updates to a doc from a single chunk', function (done) { this.blob = 'one two three five' this.sha = createMockBlob(this.historyId, this.blob) this.v2AuthorId = '123456789' MockHistoryStore() .get(`/api/projects/${this.historyId}/versions/6/history`) .reply(200, { chunk: { history: { snapshot: { files: { 'foo.tex': { hash: this.sha, stringLength: this.blob.length, }, }, }, changes: [ { operations: [ { pathname: 'foo.tex', textOperation: [13, ' four', 5], }, ], timestamp: '2017-12-04T10:29:17.786Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [4, -4, 15], }, ], timestamp: '2017-12-04T10:29:22.905Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [19, ' six'], }, ], timestamp: '2017-12-04T10:29:26.120Z', v2Authors: [this.v2AuthorId], }, ], }, startVersion: 3, }, authors: [31], }) ProjectHistoryClient.getDiff( this.projectId, 'foo.tex', 3, 6, (error, diff) => { if (error) { throw error } expect(diff).to.deep.equal({ diff: [ { u: 'one ', }, { d: 'two ', meta: { users: [31], start_ts: 1512383362905, end_ts: 1512383362905, }, }, { u: 'three', }, { i: ' four', meta: { users: [31], start_ts: 1512383357786, end_ts: 1512383357786, }, }, { u: ' five', }, { i: ' six', meta: { users: [this.v2AuthorId], start_ts: 1512383366120, end_ts: 1512383366120, }, }, ], }) done() } ) }) it('should return a diff of the updates to a doc across multiple chunks', function (done) { MockHistoryStore() .get(`/api/projects/${this.historyId}/versions/5/history`) .reply(200, { chunk: { history: { snapshot: { files: { 'foo.tex': { hash: createMockBlob(this.historyId, 'one two three five'), stringLength: 'one three four five'.length, }, }, }, changes: [ { operations: [ { pathname: 'foo.tex', textOperation: [13, ' four', 5], }, ], timestamp: '2017-12-04T10:29:17.786Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [4, -4, 15], }, ], timestamp: '2017-12-04T10:29:22.905Z', authors: [31], }, ], }, startVersion: 3, }, authors: [{ id: 31, email: 'james.allen@overleaf.com', name: 'James' }], }) MockHistoryStore() .get(`/api/projects/${this.historyId}/versions/6/history`) .reply(200, { chunk: { history: { snapshot: { files: { 'foo.tex': { hash: createMockBlob(this.historyId, 'one three four five'), stringLength: 'one three four five'.length, }, }, }, changes: [ { operations: [ { pathname: 'foo.tex', textOperation: [19, ' six'], }, ], timestamp: '2017-12-04T10:29:26.120Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [23, ' seven'], }, ], timestamp: '2017-12-04T10:29:26.120Z', authors: [31], }, ], }, startVersion: 5, }, authors: [{ id: 31, email: 'james.allen@overleaf.com', name: 'James' }], }) ProjectHistoryClient.getDiff( this.projectId, 'foo.tex', 4, 6, (error, diff) => { if (error) { throw error } expect(diff).to.deep.equal({ diff: [ { u: 'one ', }, { d: 'two ', meta: { users: [31], start_ts: 1512383362905, end_ts: 1512383362905, }, }, { u: 'three four five', }, { i: ' six', meta: { users: [31], start_ts: 1512383366120, end_ts: 1512383366120, }, }, ], }) done() } ) }) it('should return a 404 when there are no changes for the file in the range', function (done) { this.blob = 'one two three five' this.sha = createMockBlob(this.historyId, this.blob) MockHistoryStore() .get(`/api/projects/${this.historyId}/versions/6/history`) .reply(200, { chunk: { history: { snapshot: { files: { 'foo.tex': { hash: this.sha, stringLength: this.blob.length, }, }, }, changes: [ { operations: [ { pathname: 'foo.tex', textOperation: [13, ' four', 5], }, ], timestamp: '2017-12-04T10:29:17.786Z', authors: [31], }, ], }, startVersion: 3, }, authors: [31], }) request.get( { url: `http://127.0.0.1:3054/project/${this.projectId}/diff`, qs: { pathname: 'not_here.tex', from: 3, to: 6, }, json: true, }, (error, res, body) => { if (error) { throw error } expect(res.statusCode).to.equal(404) done() } ) }) it('should return a binary flag with a diff of a binary file', function (done) { this.blob = 'one two three five' this.sha = createMockBlob(this.historyId, this.blob) this.binaryBlob = Buffer.from([1, 2, 3, 4]) this.binarySha = createMockBlob(this.historyId, this.binaryBlob) MockHistoryStore() .get(`/api/projects/${this.historyId}/versions/6/history`) .reply(200, { chunk: { history: { snapshot: { files: { 'binary.tex': { hash: this.binarySha, byteLength: this.binaryBlob.length, // Indicates binary }, 'foo.tex': { hash: this.sha, stringLength: this.blob.length, // Indicates binary }, }, }, changes: [ { operations: [ { pathname: 'foo.tex', textOperation: [13, ' four', 5], }, ], timestamp: '2017-12-04T10:29:17.786Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [4, -4, 15], }, ], timestamp: '2017-12-04T10:29:22.905Z', authors: [31], }, { operations: [ { pathname: 'foo.tex', textOperation: [19, ' six'], }, ], timestamp: '2017-12-04T10:29:26.120Z', authors: [31], }, ], }, startVersion: 3, }, authors: [{ id: 31, email: 'james.allen@overleaf.com', name: 'James' }], }) ProjectHistoryClient.getDiff( this.projectId, 'binary.tex', 3, 6, (error, diff) => { if (error) { throw error } expect(diff).to.deep.equal({ diff: { binary: true, }, }) done() } ) }) })