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784824895d
Closes #572 Introduce tests for new semantics for ES2015 features such as lexically-scoped bindings. Also add tests for semantics defined in prior editions of the specification but not yet covered in this test suite.
45 lines
1.4 KiB
JavaScript
45 lines
1.4 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-evaldeclarationinstantiation
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description: Modification of previously-existing configurable global property
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info: |
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[...]
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15. For each production f in functionsToInitialize, do
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a. Let fn be the sole element of the BoundNames of f.
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b. Let fo be the result of performing InstantiateFunctionObject for f
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with argument lexEnv.
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c. If varEnvRec is a global Environment Record, then
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i. Perform ? varEnvRec.CreateGlobalFunctionBinding(fn, fo, true).
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[...]
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8.1.1.4.18 CreateGlobalFunctionBinding
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[...]
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5. If existingProp is undefined or existingProp.[[Configurable]] is true,
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then
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a. Let desc be the PropertyDescriptor{[[Value]]: V, [[Writable]]: true,
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[[Enumerable]]: true, [[Configurable]]: D}.
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6. Else,
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[...]
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7. Perform ? DefinePropertyOrThrow(globalObject, N, desc).
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[...]
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includes: [propertyHelper.js]
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---*/
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var initial = null;
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Object.defineProperty(this, 'f', {
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enumerable: false,
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writable: false,
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configurable: true
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});
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(0, eval)('initial = f; function f() { return 345; }');
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verifyEnumerable(this, 'f');
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verifyWritable(this, 'f');
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verifyConfigurable(this, 'f');
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assert.sameValue(typeof initial, 'function');
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assert.sameValue(initial(), 345);
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