// 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: 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'
);