adds-value-different-callbackfn.js

Enable keyboard shortcuts

// |reftest| shell-option(--enable-upsert) skip-if(!WeakMap.prototype.getOrInsertComputed)

// Copyright (C) 2025 Jonas Haukenes, Mathias Ness. All rights reserved.

// This code is governed by the BSD license found in the LICENSE file.

/*---

esid: proposal-upsert

description: >

  Does not throw if `callbackfn` is callable.

info: |

  WeakMap.prototype.getOrInsertComputed ( key , callbackfn )

...

  3. If IsCallable(callbackfn) is false, throw a TypeError exception.

...

  features: [arrow-function]

---*/

var bar = {};

var baz = {};

var foo = {};

var foobar = {};

var foobarbaz = {};

var m = new WeakMap();

assertEq(

    m.getOrInsertComputed(bar, function() {return 1;})

    , 1);

assertEq(m.get(bar), 1);

assertEq(

    m.getOrInsertComputed(baz, () => 2)

    , 2);

assertEq(m.get(baz), 2);

function three() {return 3;}

assertEq(

    m.getOrInsertComputed(foo, three)

    , 3);

assertEq(m.get(foo), 3);

assertEq(

    m.getOrInsertComputed(foobar, new Function())

    , undefined);

assertEq(m.get(foobar), undefined);

assertEq(

    m.getOrInsertComputed(foobarbaz, (function() {return 5;}).bind(m))

    , 5);

assertEq(m.get(foobarbaz), 5);

reportCompare(0, 0);