test: change callback function to arrow function

lshanmug · rvagg · commit c1777990aef6 · 2018-11-28T11:25:25.000+11:00
PR-URL: #24421 Reviewed-By: Ouyang Yadong <oyydoibh@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
diff --git a/test/parallel/test-stream-unshift-empty-chunk.js b/test/parallel/test-stream-unshift-empty-chunk.js
@@ -32,14 +32,14 @@ let nChunks = 10;
 const chunk = Buffer.alloc(10, 'x');
 
 r._read = function(n) {
- setImmediate(function() {
+ setImmediate(() => {
 r.push(--nChunks === 0 ? null : chunk);
 });
 };
 
 let readAll = false;
 const seen = [];
-r.on('readable', function() {
+r.on('readable', () => {
 let chunk;
 while (chunk = r.read()) {
 seen.push(chunk.toString());
@@ -74,7 +74,7 @@ const expect =
 'xxxxxxxxxx',
 'yyyyy' ];
 
-r.on('end', function() {
+r.on('end', () => {
 assert.deepStrictEqual(seen, expect);
 console.log('ok');
 });

-Original file line number
+Diff line change
 constchunk=Buffer.alloc(10,'x');
 r._read=function(n){
 -setImmediate(function(){
 +setImmediate(()=>{
 r.push(--nChunks===0 ? null : chunk);
 });
 };
 letreadAll=false;
 constseen=[];
 -r.on('readable',function(){
 +r.on('readable',()=>{
 letchunk;
 while(chunk=r.read()){
 seen.push(chunk.toString());
 'xxxxxxxxxx',
 'yyyyy'];
 -r.on('end',function(){
 +r.on('end',()=>{
 assert.deepStrictEqual(seen,expect);
 console.log('ok');
 });