getter-making-future-key-nonenumerable.js (1059B)
1 // Copyright (C) 2015 Jordan Harband. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 esid: sec-object.entries 6 description: Object.entries does not see an element made non-enumerable by a getter that is hit during iteration 7 author: Jordan Harband 8 ---*/ 9 10 var bDeletesC = { 11 a: 'A', 12 get b() { 13 Object.defineProperty(this, 'c', { 14 enumerable: false 15 }); 16 return 'B'; 17 }, 18 c: 'C' 19 }; 20 21 var result = Object.entries(bDeletesC); 22 23 assert.sameValue(Array.isArray(result), true, 'result is an array'); 24 assert.sameValue(result.length, 2, 'result has 2 items'); 25 26 assert.sameValue(Array.isArray(result[0]), true, 'first entry is an array'); 27 assert.sameValue(Array.isArray(result[1]), true, 'second entry is an array'); 28 29 assert.sameValue(result[0][0], 'a', 'first entry has key "a"'); 30 assert.sameValue(result[0][1], 'A', 'first entry has value "A"'); 31 assert.sameValue(result[1][0], 'b', 'second entry has key "b"'); 32 assert.sameValue(result[1][1], 'B', 'second entry has value "B"'); 33 34 reportCompare(0, 0);