tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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async-iterable-input-does-not-await-input.js (977B)

      1 // |reftest| async
      2 // Copyright (C) 2023 Igalia, S.L. All rights reserved.
      3 // This code is governed by the BSD license found in the LICENSE file.
      4 
      5 /*---
      6 esid: sec-array.fromasync
      7 description: Async-iterable input does not await input values.
      8 includes: [compareArray.js, asyncHelpers.js]
      9 flags: [async]
     10 features: [Array.fromAsync]
     11 ---*/
     12 
     13 asyncTest(async function () {
     14  const prom = Promise.resolve({});
     15  const expected = [ prom ];
     16 
     17  function createInput () {
     18    return {
     19      // The following async iterator will yield one value
     20      // (the promise named “prom”).
     21      [Symbol.asyncIterator]() {
     22        let i = 0;
     23        return {
     24          async next() {
     25            if (i > 0) {
     26              return { done: true };
     27            }
     28            i++;
     29            return { value: prom, done: false }
     30          },
     31        };
     32      },
     33    };
     34  }
     35 
     36  const input = createInput();
     37  const output = await Array.fromAsync(input);
     38  assert.compareArray(output, expected);
     39 });