tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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callback-arg.js (799B)

      1 // Copyright (c) 2023 Ecma International.  All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 esid: sec-map.groupby
      6 description: Map.groupBy calls function with correct arguments
      7 info: |
      8  Map.groupBy ( items, callbackfn )
      9 
     10  ...
     11  GroupBy ( items, callbackfn, coercion )
     12 
     13  6. Repeat,
     14 
     15      e. Let key be Completion(Call(callbackfn, undefined, « value, 𝔽(k) »)).
     16  ...
     17 features: [array-grouping, Map]
     18 ---*/
     19 
     20 
     21 const arr = [-0, 0, 1, 2, 3];
     22 
     23 let calls = 0;
     24 
     25 Map.groupBy(arr, function (n, i) {
     26  calls++;
     27  assert.sameValue(n, arr[i], "selected element aligns with index");
     28  assert.sameValue(arguments.length, 2, "only two arguments are passed");
     29  return null;
     30 });
     31 
     32 assert.sameValue(calls, 5, 'called for all 5 elements');
     33 
     34 reportCompare(0, 0);