[test] Use npm scripts instead of gulp (#3078)

Author: thiamsantos

.gitignore

@@ -11,3 +11,4 @@ node_modules
 coverage
 .idea
 dist
+.nyc_output

Makefile

@@ -21,7 +21,7 @@
     "url": "git://github.com/socketio/socket.io"
   },
   "scripts": {
-    "test": "gulp test"
+    "test": "nyc mocha --reporter spec --slow 200 --bail --timeout 10000 test/socket.io.js"
   },
   "dependencies": {
     "debug": "~2.6.6",
@@ -31,16 +31,9 @@
     "socket.io-parser": "~3.1.1"
   },
   "devDependencies": {
-    "babel-preset-es2015": "^6.24.1",
-    "del": "^2.2.2",
     "expect.js": "0.3.1",
-    "gulp": "^3.9.1",
-    "gulp-babel": "^6.1.2",
-    "gulp-istanbul": "^1.1.1",
-    "gulp-mocha": "^4.3.1",
-    "gulp-task-listing": "1.0.1",
-    "istanbul": "^0.4.5",
-    "mocha": "^3.3.0",
+    "mocha": "^3.5.3",
+    "nyc": "^11.2.1",
     "superagent": "1.6.1",
     "supertest": "1.1.0"
   },

gulpfile.js

@@ -1,12 +1,5 @@
-var testVersion = process.env.TEST_VERSION;
 var http = require('http').Server;
-var io;
-if (testVersion === 'compat') {
-  console.log('testing compat version');
-  io = require('../dist');
-} else {
-  io = require('../lib');
-}
+var io = require('../lib');
 var fs = require('fs');
 var join = require('path').join;
 var exec = require('child_process').exec;
@@ -432,18 +425,9 @@ describe('socket.io', function(){
   });
 
   describe('namespaces', function(){
-    var Socket;
-    if (testVersion === 'compat') {
-      Socket = require('../dist/socket');
-    } else {
-      Socket = require('../lib/socket');
-    }
-    var Namespace;
-    if (testVersion === 'compat') {
-      Namespace = require('../dist/namespace');
-    } else {
-      Namespace = require('../lib/namespace');
-    }
+    var Socket = require('../lib/socket');
+    var Namespace = require('../lib/namespace');
+
     it('should be accessible through .sockets', function(){
       var sio = io();
       expect(sio.sockets).to.be.a(Namespace);
@@ -2123,12 +2107,7 @@ describe('socket.io', function(){
   });
 
   describe('middleware', function(done){
-    var Socket;
-    if (testVersion === 'compat') {
-      Socket = require('../dist/socket');
-    } else {
-      Socket = require('../lib/socket');
-    }
+    var Socket = require('../lib/socket');
 
     it('should call functions', function(done){
       var srv = http();