benchmark: disambiguate filename and dirname read perf

PR-URL: #58056
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: aduh95

benchmark/esm/import-meta.js

@@ -1,32 +1,37 @@
 'use strict';
 
 constpath=require('path');
-const{ pathToFileURL, fileURLToPath}=require('url');
+const{ pathToFileURL }=require('url');
 constcommon=require('../common');
 constassert=require('assert');
 constbench=common.createBenchmark(main,{
 n: [1000],
+valuesToRead: [
+'dirname-and-filename',
+'dirname',
+'filename',
+],
 });
 
-constfile=pathToFileURL(
-path.resolve(__filename,'../../fixtures/esm-dir-file.mjs'),
-);
-asyncfunctionload(array,n){
+constfixtureDir=path.resolve(__filename,'../../fixtures');
+constfixtureDirURL=pathToFileURL(fixtureDir);
+asyncfunctionload(array,n,valuesToRead){
 for(leti=0;i<n;i++){
-array[i]=awaitimport(`${file}?i=${i}`);
+array[i]=awaitimport(`${fixtureDirURL}/import-meta-${valuesToRead}.mjs?i=${i}`);
 }
 returnarray;
 }
 
-functionmain({ n }){
+functionmain({ n, valuesToRead}){
 constarray=[];
 for(leti=0;i<n;++i){
 array.push({dirname: '',filename: '',i: 0});
 }
 
 bench.start();
-load(array,n).then((arr)=>{
+load(array,n,valuesToRead).then((arr)=>{
 bench.end(n);
-assert.strictEqual(arr[n-1].filename,fileURLToPath(file));
+if(valuesToRead.includes('dirname'))assert.strictEqual(arr[n-1].dirname,fixtureDir);
+if(valuesToRead.includes('filename'))assert.strictEqual(arr[n-1].filename,path.join(fixtureDir,`import-meta-${valuesToRead}.mjs`));
 });
 }

benchmark/fixtures/esm-dir-file.mjs …res/import-meta-dirname-and-filename.mjsbenchmark/fixtures/esm-dir-file.mjs renamed to benchmark/fixtures/import-meta-dirname-and-filename.mjs benchmark/fixtures/esm-dir-file.mjs renamed to benchmark/fixtures/import-meta-dirname-and-filename.mjs

@@ -0,0 +1 @@
+exportconstdirname=import.meta.dirname;

benchmark/fixtures/import-meta-dirname.mjs

@@ -0,0 +1 @@
+exportconstfilename=import.meta.filename;