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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.
33 lines
1.3 KiB
JavaScript
33 lines
1.3 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: Newly-created local binding may be deleted
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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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[...]
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d. Else,
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i. Let bindingExists be varEnvRec.HasBinding(fn).
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ii. If bindingExists is false, then
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1. Let status be ! varEnvRec.CreateMutableBinding(fn, true).
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2. Assert: status is not an abrupt completion because of
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validation preceding step 12.
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3. Perform ! varEnvRec.InitializeBinding(fn, fo).
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[...]
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flags: [noStrict]
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---*/
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var initial, postDeletion;
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(function() {
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eval('initial = f; delete f; postDeletion = function() { f; }; function f() { return 33; }');
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}());
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assert.sameValue(typeof initial, 'function');
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assert.sameValue(initial(), 33);
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assert.throws(ReferenceError, postDeletion, 'binding may be deleted');
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