tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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computed-property-evaluation-order.js (847B)

      1 // Copyright (C) 2016 Michael Ficarra. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-object-initializer-runtime-semantics-propertydefinitionevaluation
      5 description: >
      6    Evaluation of PropertyDefinitionList occurs in order, and each
      7    PropertyDefinition's PropertyName is evaluated before its
      8    AssignmentExpression.
      9 ---*/
     10 
     11 var counter = 0;
     12 var o = {
     13  [++counter]: ++counter,
     14  [++counter]: ++counter,
     15  [++counter]: ++counter,
     16 }
     17 
     18 var keys = Object.getOwnPropertyNames(o);
     19 
     20 assert.sameValue(keys.length, 3, '3 PropertyDefinitions should result in 3 properties');
     21 assert.sameValue(keys[0], '1');
     22 assert.sameValue(o[keys[0]], 2);
     23 assert.sameValue(keys[1], '3');
     24 assert.sameValue(o[keys[1]], 4);
     25 assert.sameValue(keys[2], '5');
     26 assert.sameValue(o[keys[2]], 6);
     27 
     28 reportCompare(0, 0);