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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.
34 lines
1.1 KiB
JavaScript
34 lines
1.1 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: Initialization of new variable binding
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info: |
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[...]
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16. For each String vn in declaredVarNames, in list order do
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a. If varEnvRec is a global Environment Record, then
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[...]
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b. Else,
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i. Let bindingExists be varEnvRec.HasBinding(vn).
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ii. If bindingExists is false, then
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1. Let status be ! varEnvRec.CreateMutableBinding(vn, 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(vn, undefined).
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[...]
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flags: [noStrict]
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---*/
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var initial = null;
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var postAssignment;
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(function() {
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eval('initial = x; x = 4; postAssignment = x; var x;');
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}());
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assert.sameValue(initial, undefined);
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assert.sameValue(postAssignment, 4, 'binding is mutable');
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assert.throws(ReferenceError, function() {
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x;
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});
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