test: improve to use template string

PR-URL: #17895
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: sreepurnajasti

test/parallel/test-child-process-fork-net2.js

@@ -12,19 +12,19 @@ if (process.argv[2] === 'child') {
 process.on('message',function(m,socket){
 if(!socket)return;
 
-console.error('[%d] got socket',id,m);
+console.error(`[${id}] got socket${m}`);
 
 // will call .end('end') or .write('write');
 socket[m](m);
 
 socket.resume();
 
 socket.on('data',function(){
-console.error('[%d] socket.data',id,m);
+console.error(`[${id}] socket.data${m}`);
 });
 
 socket.on('end',function(){
-console.error('[%d] socket.end',id,m);
+console.error(`[${id}] socket.end${m}`);
 });
 
 // store the unfinished socket
@@ -33,27 +33,27 @@ if (process.argv[2] === 'child') {
 }
 
 socket.on('close',function(had_error){
-console.error('[%d] socket.close',id,had_error,m);
+console.error(`[${id}] socket.close${had_error}${m}`);
 });
 
 socket.on('finish',function(){
-console.error('[%d] socket finished',id,m);
+console.error(`[${id}] socket finished${m}`);
 });
 });
 
 process.on('message',function(m){
 if(m!=='close')return;
-console.error('[%d] got close message',id);
+console.error(`[${id}] got close message`);
 needEnd.forEach(function(endMe,i){
-console.error('[%d] ending %d/%d',id,i,needEnd.length);
+console.error(`[${id}] ending ${i}/${needEnd.length}`);
 endMe.end('end');
 });
 });
 
 process.on('disconnect',function(){
-console.error('[%d] process disconnect, ending',id);
+console.error(`[${id}] process disconnect, ending`);
 needEnd.forEach(function(endMe,i){
-console.error('[%d] ending %d/%d',id,i,needEnd.length);
+console.error(`[${id}] ending ${i}/${needEnd.length}`);
 endMe.end('end');
 });
 });
@@ -86,7 +86,7 @@ if (process.argv[2] === 'child') {
 connected+=1;
 
 socket.once('close',function(){
-console.log('[m] socket closed, total %d',++closed);
+console.log(`[m] socket closed, total ${++closed}`);
 });
 
 if(connected===count){