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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: A block-scoped binding is created
template: eval-global
info: |
13.2.14 Runtime Semantics: BlockDeclarationInstantiation
[...]
4. For each element d in declarations do
a. For each element dn of the BoundNames of d do
i. If IsConstantDeclaration of d is true, then
[...]
ii. Else,
2. Perform ! envRec.CreateMutableBinding(dn, false).
b. If d is a GeneratorDeclaration production or a FunctionDeclaration
production, then
i. Let fn be the sole element of the BoundNames of d.
ii. Let fo be the result of performing InstantiateFunctionObject for
d with argument env.
iii. Perform envRec.InitializeBinding(fn, fo).
---*/
//- setup
var initialBV, currentBV;
//- body
initialBV = f; f = 123; currentBV = f; return 'decl';
//- teardown
f();
assert.sameValue(
initialBV(),
'decl',
'Block-scoped binding value is function object at execution time'
);
assert.sameValue(currentBV, 123, 'Block-scoped binding is mutable');
assert.sameValue(
f(),
'decl',
'Block-scoped binding is independent of outer var-scoped binding'
);
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