test: updating to test 304 and 204 explicity

test/parallel/test-http-reuse-socket.js

@@ -1,24 +1,3 @@
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
-
 'use strict';
 const common = require('../common');
 const http = require('http');
@@ -28,8 +7,8 @@ const Countdown = require('../common/countdown');
 // The HEAD:204, GET:200 was the most pathological test case I could find.
 // GETs following a 204 response with a content-encoding header failed.
 // Responses without bodies and without content-length or encoding caused
-//   the socket to be closed.
-const codes = [204, 200, 200];
+// the socket to be closed.
+const codes = [304, 204, 200, 200];
 const methods = ['HEAD', 'HEAD', 'GET'];
 
 const sockets = [];
@@ -47,7 +26,6 @@ const server = http.createServer(common.mustCall((req, res) => {
 }, codes.length));
 
 function nextRequest() {
-
   const request = http.request({
     port: server.address().port,
     path: '/',
@@ -63,11 +41,11 @@ function nextRequest() {
     response.resume();
   }));
   request.on('socket', common.mustCall((socket) => {
-    if (sockets.indexOf(socket) === -1) {
+    if (!sockets.includes(socket)) {
       sockets.push(socket);
     }
   }));
   request.end();
 }
 
-server.listen(0, nextRequest);
+server.listen(0, common.mustCall(nextRequest));