JSTests/test262/test/language/statements/const/fn-name-gen.js

// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es6id: 13.3.1.4
description: Assignment of function `name` attribute (GeneratorExpression)
info: |
    LexicalBinding : BindingIdentifier Initializer

    [...]
    6. If IsAnonymousFunctionDefinition(Initializer) is true, then
       a. Let hasNameProperty be HasOwnProperty(value, "name").
       b. ReturnIfAbrupt(hasNameProperty).
       c. If hasNameProperty is false, perform SetFunctionName(value,
          bindingId).
includes: [propertyHelper.js]
features: [generators]
---*/

const xGen = function* x() {};
const gen = function*() {};

assert(xGen.name !== 'xGen');

assert.sameValue(gen.name, 'gen');
verifyNotEnumerable(gen, 'name');
verifyNotWritable(gen, 'name');
verifyConfigurable(gen, 'name');