summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/language/expressions/logical-assignment/lgcl-or-assignment-operator-no-set-put-strict.js
blob: 0d987baf235b8f1ab73a5245b3e38f54618fa56c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
'use strict';
// Copyright (c) 2020 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-assignment-operators-runtime-semantics-evaluation
description: >
    Strict Mode - TypeError is thrown if the LeftHandSide of a Logical
    Assignment operator(||=) is a reference to a data property with the
    attribute value {[[Set]]:undefined} and PutValue step is reached.
flags: [onlyStrict]
features: [logical-assignment-operators]

---*/

var obj = {};
Object.defineProperty(obj, "prop", {
  get: function() {
    return 0;
  },
  set: undefined,
  enumerable: true,
  configurable: true
});

assert.throws(TypeError, function() {
  obj.prop ||= 1;
});
assert.sameValue(obj.prop, 0, "obj.prop");

reportCompare(0, 0);