// 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 set to `undefined`
template: eval-global
info: |
    B.3.3.3 Changes to EvalDeclarationInstantiation

    [...]
    i. If varEnvRec is a global Environment Record, then
       i. Perform ? varEnvRec.CreateGlobalFunctionBinding(F, undefined, true).
    [...]

    8.1.1.4.18 CreateGlobalFunctionBinding

    [...]
    5. If existingProp is undefined or existingProp.[[Configurable]] is true,
       then
       [...]
    6. Else,
       a. Let desc be the PropertyDescriptor{[[Value]]: V }.
    [...]
includes: [fnGlobalObject.js, propertyHelper.js]
---*/

//- setup
Object.defineProperty(fnGlobalObject(), 'f', {
  value: 'x',
  enumerable: true,
  writable: true,
  configurable: false
});
//- before
var global = fnGlobalObject();
assert.sameValue(f, undefined, "binding is initialized to `undefined`");

verifyEnumerable(global, "f");
verifyWritable(global, "f");
verifyNotConfigurable(global, "f");