reentrancy.optional.any.js

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /js/builtins/weakrefs/reentrancy.optional.any.html - WPT Dashboard Interop Dashboard
- /js/builtins/weakrefs/reentrancy.optional.any.worker.html - WPT Dashboard Interop Dashboard

// META: script=/common/gc.js

// META: script=resources/maybe-garbage-collect.js

// ├──> maybeGarbageCollectAndCleanupAsync

// └──> resolveGarbageCollection

/*---

esid: sec-properties-of-the-finalization-registry-constructor

---*/

let called = 0;

let endOfCall = 0;

let finalizationRegistry = new FinalizationRegistry(function() {});

function callback(holding) {

  called += 1;

  if (called === 1) {

    // Atempt to re-enter the callback.

    let nestedCallbackRan = false;

    finalizationRegistry.cleanupSome(() => { nestedCallbackRan = true });

    assert_equals(nestedCallbackRan, true);

  endOfCall += 1;

function emptyCells() {

  let o1 = {};

  let o2 = {};

  // Register more than one objects to test reentrancy.

  finalizationRegistry.register(o1, 'holdings 1');

  finalizationRegistry.register(o2, 'holdings 2');

  let prom = maybeGarbageCollectAndCleanupAsync(o1);

  o1 = null;

  return prom;

promise_test(() => {

  return (async () => {

    assert_implements(

      typeof FinalizationRegistry.prototype.cleanupSome === 'function',

      'FinalizationRegistry.prototype.cleanupSome is not implemented.'

);

    await emptyCells();

    finalizationRegistry.cleanupSome(callback);

    assert_equals(called, 1, 'callback was called');

    assert_equals(endOfCall, 1, 'callback finished');

  })().catch(resolveGarbageCollection);

}, 'cleanupCallback has only one optional chance to be called for a GC that cleans up a registered target.');