test: avoid apply() calls with large amount of elements

PR-URL: #55501 Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Antoine du Hamel <[email protected]> Reviewed-By: Chemi Atlow <[email protected]>

Author: LiviaMedeiros

test/parallel/test-buffer-includes.js

@@ -213,10 +213,7 @@ assert(!asciiString.includes('\x2061'));
 assert(asciiString.includes('leb',0));
 
 // Search in string containing many non-ASCII chars.
-constallCodePoints=[];
-for(leti=0;i<65534;i++)allCodePoints[i]=i;
-constallCharsString=String.fromCharCode.apply(String,allCodePoints)+
-String.fromCharCode(65534,65535);
+constallCharsString=Array.from({length: 65536},(_,i)=>String.fromCharCode(i)).join('');
 constallCharsBufferUtf8=Buffer.from(allCharsString);
 constallCharsBufferUcs2=Buffer.from(allCharsString,'ucs2');
 

test/parallel/test-buffer-indexof.js

@@ -285,10 +285,7 @@ assert.strictEqual(-1, asciiString.indexOf('\x2061'));
 assert.strictEqual(asciiString.indexOf('leb',0),3);
 
 // Search in string containing many non-ASCII chars.
-constallCodePoints=[];
-for(leti=0;i<65534;i++)allCodePoints[i]=i;
-constallCharsString=String.fromCharCode.apply(String,allCodePoints)+
-String.fromCharCode(65534,65535);
+constallCharsString=Array.from({length: 65536},(_,i)=>String.fromCharCode(i)).join('');
 constallCharsBufferUtf8=Buffer.from(allCharsString);
 constallCharsBufferUcs2=Buffer.from(allCharsString,'ucs2');