JSTests/test262/test/built-ins/FinalizationGroup/prototype/cleanupSome/return-undefined.js

// Copyright (C) 2019 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-finalization-group.prototype.cleanupSome
description: Return undefined regardless the result of CleanupFinalizationGroup
info: |
  FinalizationGroup.prototype.cleanupSome ( [ callback ] )

  1. Let finalizationGroup be the this value.
  2. If Type(finalizationGroup) is not Object, throw a TypeError exception.
  3. If finalizationGroup does not have a [[Cells]] internal slot, throw a TypeError exception.
  4. If callback is not undefined and IsCallable(callback) is false, throw a TypeError exception.
  5. Perform ? CleanupFinalizationGroup(finalizationGroup, callback).
  6. Return undefined.
features: [FinalizationGroup, arrow-function, async-functions, async-iteration, class]
---*/

var fn = function() {};
var cb = function() {};
var poisoned = function() { throw new Test262Error(); };
var fg = new FinalizationGroup(fn);

assert.sameValue(fg.cleanupSome(cb), undefined, 'regular callback');
assert.sameValue(fg.cleanupSome(fn), undefined, 'regular callback, same FG cleanup function');

assert.sameValue(fg.cleanupSome(() => {}), undefined, 'arrow function');
assert.sameValue(fg.cleanupSome(fg.cleanupSome), undefined, 'cleanupSome itself');
assert.sameValue(fg.cleanupSome(poisoned), undefined, 'poisoned');
assert.sameValue(fg.cleanupSome(class {}), undefined, 'class expression');
assert.sameValue(fg.cleanupSome(async function() {}), undefined, 'async function');
assert.sameValue(fg.cleanupSome(function *() {}), undefined, 'generator');
assert.sameValue(fg.cleanupSome(async function *() {}), undefined, 'async generator');

assert.sameValue(fg.cleanupSome(), undefined, 'undefined, implicit');
assert.sameValue(fg.cleanupSome(undefined), undefined, 'undefined, explicit');

var poisonedFg = new FinalizationGroup(poisoned);

assert.sameValue(poisonedFg.cleanupSome(cb), undefined, 'regular callback on poisoned FG cleanup callback');
assert.sameValue(poisonedFg.cleanupSome(poisoned), undefined, 'poisoned callback on poisoned FG cleanup callback');