summaryrefslogtreecommitdiff
path: root/src/class-fields/static-redeclaration-symbol.case
blob: cc811207d75f5ca69db595ddc7a624ab944372cb (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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
// Copyright (C) 2017 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: Redeclaration of public static fields with the same name
info: |
  2.13.2 Runtime Semantics: ClassDefinitionEvaluation

  ...
  30. Set the value of F's [[Fields]] internal slot to fieldRecords.
  ...
  33. Let result be InitializeStaticFields(F).

  InitializeStaticFields(F)

  3. Let fieldRecords be the value of F's [[Fields]] internal slot.
  4. For each item fieldRecord in order from fieldRecords,
    a. If fieldRecord.[[static]] is true, then
      i. Perform ? DefineField(F, fieldRecord).

template: default
includes: [propertyHelper.js, compareArray.js]
---*/

//- setup
var x = [];
var y = Symbol();
//- fields
static [y] = (x.push("a"), "old_value");
static [y] = (x.push("b"), "same_value");
static [y] = (x.push("c"), "same_value");
//- assertions
assert.sameValue(Object.hasOwnProperty.call(C.prototype, y), false);

verifyProperty(C, y, {
  value: "same_value",
  enumerable: true,
  writable: true,
  configurable: true
});

assert(compareArray(x, ["a", "b", "c"]));

var c = new C();
assert.sameValue(Object.hasOwnProperty.call(c, y), false);

assert(compareArray(x, ["a", "b", "c"]), "static fields are not redefined on class instatiation");