steal-tools/test/test_live.js

Futuristic build tools for ES6 Module applications.

var assert = require("assert");
var live = require("../lib/stream/live");
var fs = require("fs");
var asap = require("pdenodeify");
var WebSocket = require("ws");

describe("live-reload", function(){
	this.timeout(10000);

	var fooPath = __dirname + "/live_reload/foo.js";

	before(function(done){
		var self = this;
		asap(fs.readFile)(fooPath, "utf8").then(function(content){
			self._fooModule = content;
		}).then(done, done);
	});

	after(function(done){
		asap(fs.writeFile)(fooPath, this._fooModule, "utf8").then(function(){
			done();
		});
	});

	it("Starts a web socket server", function(done){
		var liveStream = live({
			config: __dirname + "/live_reload/package.json!npm"
		}, {});

		var ws = new WebSocket("ws://localhost:8012");

		ws.on("open", function(){
			ws.send("main");
		});

		liveStream.once("data", function(data){
			liveStream.once("data", function(data){
				assert(/bar/.test(data.graph.foo.load.source),
					   "Initial source contains 'bar'");

				var newSource = "module.exports = 'foo';";
				asap(fs.writeFile)(fooPath, newSource, "utf8").then(function(){
					liveStream.once("data", function(data){
						assert(/foo/.test(data.graph.foo.load.source),
							"New source contains 'foo'");
						done();
					});
				});
			});
		});
		liveStream.on("error", function(err){
			done(err);
		});
	});
});