non-Strict mode Failing
Expected no error, got SyntaxError: 3:10:private properties are not supported
Features:
- class
- class-static-methods-private
Expected no error, got SyntaxError: 3:10:private properties are not supported
// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: Every new evaluation of a class creates a different Private Name (private static setter)
esid: sec-runtime-semantics-evaluate-name
info: |
ClassTail : ClassHeritage { ClassBody }
...
19. Let F be constructorInfo.[[Closure]].
20. If ClassHeritage_opt is present and protoParent is not null, then set F.[[ConstructorKind]] to "derived".
21. Perform MakeConstructor(F, false, proto).
22. Perform MakeClassConstructor(F).
...
33. If PrivateBoundIdentifiers of ClassBody contains a Private Name P such that P's [[Kind]] field is either "method" or "accessor" and P's [[Brand]] is F,
a. PrivateBrandAdd(F, F).
...
PrivateBrandCheck(O, P)
1. If O.[[PrivateBrands]] does not contain an entry e such that SameValue(e, P.[[Brand]]) is true,
a. Throw a TypeError exception.
features: [class, class-static-methods-private]
flags: [noStrict]
---*/
let classStringExpression = `(
class {
static set #m(v) {
this._v = v;
};
static access() {
this.#m = 'test262';
}
}
)`;
let evalClass = function (_eval) {
return _eval(classStringExpression);
};
let C1 = evalClass(eval);
let C2 = evalClass(eval);
C1.access();
assert.sameValue(C1._v, 'test262');
C2.access();
assert.sameValue(C2._v, 'test262');
assert.throws(TypeError, function() {
C1.access.call(C2);
}, 'invalid access of C1 private static setter');
assert.throws(TypeError, function() {
C2.access.call(C1);
}, 'invalid access of C2 private static setter');