src/class-elements/static-private-setter.case

// Copyright (C) 2019 Caio Lima (Igalia SL). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
desc: static private setter declaration and usage
info: |
  MethodDefinition :
    get ClassElementName () { FunctionBody }
    set ClassElementName ( PropertySetParameterList ) { FunctionBody }

  ClassTail : ClassHeritage { ClassBody }
    ...
    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).
    34. For each item fieldRecord in order from staticFields,
      a. Perform ? DefineField(F, field).

  PrivateFieldGet (P, O)
    1. Assert: P is a Private Name.
    2. If O is not an object, throw a TypeError exception.
    3. If P.[[Kind]] is "field",
    ...
    4. Perform ? PrivateBrandCheck(O, P).
    5. If P.[[Kind]] is "method",
    ...
    6. Else,
      a. Assert: P.[[Kind]] is "accessor".
      b. If P does not have a [[Get]] field, throw a TypeError exception.
      c. Let getter be P.[[Get]].
      d. Return ? Call(getter, O).

  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.
template: default
features: [class-static-methods-private]
---*/

//- elements
static set #f(v) {
  this._v = v;
}

static access() {
  this.#f = 'Test262';
}
//- assertions
C.access();
assert.sameValue(C._v, 'Test262');
assert.throws(TypeError, function() {
  C.access.call({});
}, 'Accessed static private setter from an arbitrary object');