mirror of https://github.com/tc39/test262.git
49 lines
1.3 KiB
JavaScript
49 lines
1.3 KiB
JavaScript
// Copyright (C) 2019 Caio Lima (Igalia SL). 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: Subclass can access private methods of a superclass (private method)
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esid: sec-privatefieldget
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info: |
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SuperCall : super Arguments
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...
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10. Perform ? InitializeInstanceElements(result, F).
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...
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InitializeInstanceFieldsElements ( O, constructor )
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1. Assert: Type ( O ) is Object.
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2. Assert: Assert constructor is an ECMAScript function object.
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3. If constructor.[[PrivateBrand]] is not undefined,
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a. Perform ? PrivateBrandAdd(O, constructor.[[PrivateBrand]]).
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4. Let fieldRecords be the value of constructor's [[Fields]] internal slot.
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5. For each item fieldRecord in order from fieldRecords,
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a. Perform ? DefineField(O, fieldRecord).
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6. Return.
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features: [class, class-methods-private]
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---*/
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class S {
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#method() { return 'super class'; }
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superAccess() { return this.#method(); }
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}
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class C extends S {
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#method() { return 'test262'; }
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access() {
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return this.#method();
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}
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}
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let c = new C();
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assert.sameValue(c.access(), 'test262');
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assert.sameValue(c.superAccess(), 'super class');
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let s = new S();
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assert.sameValue(s.superAccess(), 'super class');
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assert.throws(TypeError, function() {
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c.access.call(s);
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}, 'invalid access of C private method');
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