Overleaf/services/real-time/test/acceptance/coffee/ClientTrackingTests.js

/*
 * decaffeinate suggestions:
 * DS101: Remove unnecessary use of Array.from
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
const chai = require("chai");
const {
    expect
} = chai;
chai.should();

const RealTimeClient = require("./helpers/RealTimeClient");
const MockWebServer = require("./helpers/MockWebServer");
const FixturesManager = require("./helpers/FixturesManager");

const async = require("async");

describe("clientTracking", function() {
	describe("when a client updates its cursor location", function() {
		before(function(done) {
			return async.series([
				cb => {
					return FixturesManager.setUpProject({
						privilegeLevel: "owner",
						project: { name: "Test Project" }
					}, (error, {user_id, project_id}) => { this.user_id = user_id; this.project_id = project_id; return cb(); });
				},
				
				cb => {
					return FixturesManager.setUpDoc(this.project_id, {lines: this.lines, version: this.version, ops: this.ops}, (e, {doc_id}) => {
						this.doc_id = doc_id;
						return cb(e);
					});
				},
				
				cb => {
					this.clientA = RealTimeClient.connect();
					return this.clientA.on("connectionAccepted", cb);
				},
					
				cb => {
					this.clientB = RealTimeClient.connect();
					return this.clientB.on("connectionAccepted", cb);
				},
					
				cb => {
					return this.clientA.emit("joinProject", {
						project_id: this.project_id
					}, cb);
				},
				
				cb => {
					return this.clientA.emit("joinDoc", this.doc_id, cb);
				},
					
				cb => {
					return this.clientB.emit("joinProject", {
						project_id: this.project_id
					}, cb);
				},
					
				cb => {
					this.updates = [];
					this.clientB.on("clientTracking.clientUpdated", data => {
						return this.updates.push(data);
					});

					return this.clientA.emit("clientTracking.updatePosition", {
						row: (this.row = 42),
						column: (this.column = 36),
						doc_id: this.doc_id
					}, function(error) {
						if (error != null) { throw error; }
						return setTimeout(cb, 300);
					});
				} // Give the message a chance to reach client B.
			], done);
		});
			
		it("should tell other clients about the update", function() {
			return this.updates.should.deep.equal([
				{
					row: this.row,
					column: this.column,
					doc_id: this.doc_id,
					id: this.clientA.publicId,
					user_id: this.user_id,
					name: "Joe Bloggs"
				}
			]);
	});
		
		return it("should record the update in getConnectedUsers", function(done) {
			return this.clientB.emit("clientTracking.getConnectedUsers", (error, users) => {
				for (let user of Array.from(users)) {
					if (user.client_id === this.clientA.publicId) {
						expect(user.cursorData).to.deep.equal({
							row: this.row,
							column: this.column,
							doc_id: this.doc_id 
						});
						return done();
					}
				}
				throw new Error("user was never found");
			});
		});
	});
				
	return describe("when an anonymous client updates its cursor location", function() {
		before(function(done) {
			return async.series([
				cb => {
					return FixturesManager.setUpProject({
						privilegeLevel: "owner",
						project: { name: "Test Project"	},
						publicAccess: "readAndWrite"
					}, (error, {user_id, project_id}) => { this.user_id = user_id; this.project_id = project_id; return cb(); });
				},
				
				cb => {
					return FixturesManager.setUpDoc(this.project_id, {lines: this.lines, version: this.version, ops: this.ops}, (e, {doc_id}) => {
						this.doc_id = doc_id;
						return cb(e);
					});
				},
				
				cb => {
					this.clientA = RealTimeClient.connect();
					return this.clientA.on("connectionAccepted", cb);
				},

				cb => {
					return this.clientA.emit("joinProject", {
						project_id: this.project_id
					}, cb);
				},
			
				cb => {
					return RealTimeClient.setSession({}, cb);
				},
					
				cb => {
					this.anonymous = RealTimeClient.connect();
					return this.anonymous.on("connectionAccepted", cb);
				},	
					
				cb => {
					return this.anonymous.emit("joinProject", {
						project_id: this.project_id
					}, cb);
				},
				
				cb => {
					return this.anonymous.emit("joinDoc", this.doc_id, cb);
				},
					
				cb => {
					this.updates = [];
					this.clientA.on("clientTracking.clientUpdated", data => {
						return this.updates.push(data);
					});

					return this.anonymous.emit("clientTracking.updatePosition", {
						row: (this.row = 42),
						column: (this.column = 36),
						doc_id: this.doc_id
					}, function(error) {
						if (error != null) { throw error; }
						return setTimeout(cb, 300);
					});
				} // Give the message a chance to reach client B.
			], done);
		});
			
		return it("should tell other clients about the update", function() {
			return this.updates.should.deep.equal([
				{
					row: this.row,
					column: this.column,
					doc_id: this.doc_id,
					id: this.anonymous.publicId,
					user_id: "anonymous-user",
					name: ""
				}
			]);
	});
});
});