test: expand Worker test for non-shared ArrayBuffer

This test would be broken by V8 7.9 due to the changed `ArrayBuffer` backing store management (the same way that V8 7.8 broke this for `SharedArrayBuffer`s). While working on a solution, it would be good to already have this test in Node.js to avoid unnecessary accidental breakage. Refs: nodejs/node-v8#115 PR-URL: #30044 Reviewed-By: Yongsheng Zhang <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Richard Lau <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Luigi Pinca <[email protected]>

Author: addaleax

test/parallel/test-worker-sharedarraybuffer-from-worker-thread.js

@@ -5,19 +5,24 @@ const assert = require('assert');
 const{ Worker }=require('worker_threads');
 
 // Regression test for https://github.com/nodejs/node/issues/28777
-// Make sure that SharedArrayBuffers created in Worker threads are accessible
-// after the creating thread ended.
+// Make sure that SharedArrayBuffers and transferred ArrayBuffers created in
+// Worker threads are accessible after the creating thread ended.
 
-constw=newWorker(`
-const{parentPort } = require('worker_threads');
-const sharedArrayBuffer = new SharedArrayBuffer(4);
-parentPort.postMessage(sharedArrayBuffer);
-`,{eval: true});
+for(constctorof['ArrayBuffer','SharedArrayBuffer']){
+constw=newWorker(`
+ const{parentPort } = require('worker_threads');
+ const arrayBuffer = new ${ctor}(4);
+ parentPort.postMessage(
+ arrayBuffer,
+ '${ctor}' === 'SharedArrayBuffer' ? [] : [arrayBuffer]);
+ `,{eval: true});
 
-letsharedArrayBuffer;
-w.once('message',common.mustCall((message)=>sharedArrayBuffer=message));
-w.once('exit',common.mustCall(()=>{
-constuint8array=newUint8Array(sharedArrayBuffer);
-uint8array[0]=42;
-assert.deepStrictEqual(uint8array,newUint8Array([42,0,0,0]));
-}));
+letarrayBuffer;
+w.once('message',common.mustCall((message)=>arrayBuffer=message));
+w.once('exit',common.mustCall(()=>{
+assert.strictEqual(arrayBuffer.constructor.name,ctor);
+constuint8array=newUint8Array(arrayBuffer);
+uint8array[0]=42;
+assert.deepStrictEqual(uint8array,newUint8Array([42,0,0,0]));
+}));
+}