// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
desc: Variable binding is initialized to `undefined` in outer scope
template: eval-func
info: |
    B.3.3.3 Changes to EvalDeclarationInstantiation

    [...]
    a. If declaredFunctionOrVarNames does not contain F, then
       i. If varEnvRec is a global Environment Record, then
          [...]
       ii. Else,
           i. Let bindingExists be varEnvRec.HasBinding(F).
           ii. If bindingExists is false, then
               i. Perform ! varEnvRec.CreateMutableBinding(F, true).
               ii. Perform ! varEnvRec.InitializeBinding(F, undefined).
    [...]
---*/

//- setup
var init, changed;
//- before
init = f;
f = 123;
changed = f;
//- teardown
assert.sameValue(init, undefined, 'binding is initialized to `undefined`');
assert.sameValue(changed, 123, 'binding is mutable');
assert.throws(ReferenceError, function() {
  f;
}, 'global binding is not created');