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a3fffa754b
* Improve test coverage for `super` keyword Add tests for SuperCall and SuperProperty, organized together in the `test/language/expressions/super/` directory. For SuperProperty, include tests for usage from within Object initializers and class bodies because a different set of semantics are observable from each context.
46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. 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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esid: sec-super-keyword
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es6id: 12.3.5
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description: Prototype of active function object must be a constructor
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info: |
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[...]
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3. Let func be ? GetSuperConstructor().
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12.3.5.2 Runtime Semantics: GetSuperConstructor
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[...]
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4. Let superConstructor be ? activeFunction.[[GetPrototypeOf]]().
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5. If IsConstructor(superConstructor) is false, throw a TypeError exception.
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features: [class]
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---*/
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var evaluatedArg = false;
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var caught;
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class C extends Object {
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constructor() {
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try {
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super(evaluatedArg = true);
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} catch (err) {
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caught = err;
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}
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}
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}
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Object.setPrototypeOf(C, parseInt);
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// When the "construct" invocation completes and the "this" value is
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// uninitialized, the specification dictates that a ReferenceError must be
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// thrown. That behavior is tested elsewhere, so the error is ignored (if it is
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// produced at all).
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try {
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new C();
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} catch (_) {}
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assert.sameValue(typeof caught, 'object');
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assert.sameValue(caught.constructor, TypeError);
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assert.sameValue(
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evaluatedArg, false, 'did not perform ArgumentsListEvaluation'
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);
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