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55 lines
1.5 KiB
JavaScript
55 lines
1.5 KiB
JavaScript
// Copyright (C) 2019 Jaideep Bhoosreddy (Bloomberg LP). All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: Every new evaluation of a class creates a different brand (private method)
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esid: sec-privatefieldget
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info: |
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ClassTail : ClassHeritage { ClassBody }
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...
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11. Let proto be ObjectCreate(protoParent).
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...
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31. If PrivateBoundIdentifiers of ClassBody contains a Private Name P such that the P's [[Kind]] field is either "method" or "accessor",
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a. Set F.[[PrivateBrand]] to proto.
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...
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PrivateBrandCheck(O, P)
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1. If O.[[PrivateBrands]] does not contain an entry e such that SameValue(e, P.[[Brand]]) is true,
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a. Throw a TypeError exception.
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features: [class, class-methods-private, cross-realm]
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flags: [noStrict]
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---*/
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let realm1 = $262.createRealm();
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let realm2 = $262.createRealm();
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let eval1 = realm1.global.eval;
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let eval2 = realm2.global.eval;
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let classStringExpression = `(
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class {
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#m() { return 'test262'; }
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access(o) {
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return o.#m();
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}
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}
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)`;
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let createAndInstantiateClass = function (_eval) {
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return new (_eval(classStringExpression));
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};
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let c1 = createAndInstantiateClass(eval1);
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let c2 = createAndInstantiateClass(eval2);
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assert.sameValue(c1.access(c1), 'test262');
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assert.sameValue(c2.access(c2), 'test262');
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assert.throws(realm1.global.TypeError, function() {
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c1.access(c2);
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}, 'invalid access of c1 private method');
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assert.throws(realm2.global.TypeError, function() {
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c2.access(c1);
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}, 'invalid access of c2 private method');
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