tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

get-value-after-done.js (916B)

      1 // |reftest| shell-option(--enable-iterator-sequencing) skip-if(!Iterator.concat||!xulRuntime.shell) -- iterator-sequencing is not enabled unconditionally, requires shell-options
      2 // Copyright (C) 2025 Michael Ficarra. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-iterator.concat
      7 description: >
      8  Iterator.concat does not access the value of a done IteratorResult, diverging from the behaviour of yield*
      9 features: [iterator-sequencing]
     10 ---*/
     11 
     12 let valueAccesses = 0;
     13 let iter = {
     14  [Symbol.iterator]() {
     15    return {
     16      next() {
     17        return {
     18          get value() {
     19            ++valueAccesses;
     20          },
     21          done: true,
     22        };
     23      },
     24    };
     25  }
     26 };
     27 
     28 Array.from(Iterator.concat(iter, iter, iter));
     29 
     30 assert.sameValue(valueAccesses, 0, 'Iterator.concat does not access value getter after each iterator is done');
     31 
     32 reportCompare(0, 0);