test: using arrow functions

 - Using arrow functions in test-tls-client-resume.js - Fixed error, Expected parentheses around arrow function argument arrow-parens PR-URL: #24436 Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: James M Snell <jasnell@gmail.com>

Author: NoSkillGirl

test/parallel/test-tls-client-resume.js

@@ -38,7 +38,7 @@ const options = {
 };
 
 // create server
-const server = tls.Server(options, common.mustCall(function(socket) {
+const server = tls.Server(options, common.mustCall((socket) => {
  socket.end('Goodbye');
 }, 2));
 
@@ -49,13 +49,13 @@ server.listen(0, function() {
  const client1 = tls.connect({
  port: this.address().port,
  rejectUnauthorized: false
- }, function() {
+ }, () => {
  console.log('connect1');
  assert.ok(!client1.isSessionReused(), 'Session *should not* be reused.');
  session1 = client1.getSession();
  });
 
- client1.on('close', function() {
+ client1.on('close', () => {
  console.log('close1');
 
  const opts = {
@@ -64,12 +64,12 @@ server.listen(0, function() {
  session: session1
  };
 
- const client2 = tls.connect(opts, function() {
+ const client2 = tls.connect(opts, () => {
  console.log('connect2');
  assert.ok(client2.isSessionReused(), 'Session *should* be reused.');
  });
 
- client2.on('close', function() {
+ client2.on('close', () => {
  console.log('close2');
  server.close();
  });