test262/test/built-ins/GeneratorFunction/invoked-as-function-single-argument.js
Mike Pennisi 779a59f30c Import tests from Google V8 (generators semantics)
These tests are derived from the following files within the Google V8
project:

    test/mjsunit/es6/generators-iteration.js
    test/mjsunit/es6/generators-objects.js
    test/mjsunit/es6/generators-runtime.js
    test/mjsunit/es6/generators-states.js
2015-05-07 19:11:47 -04:00

24 lines
827 B
JavaScript

// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 25.2
description: >
When invoked via the function invocation pattern with a single argument,
the GeneratorFunction intrinsic creates a valid generator whose body is the
first argument evaluated as source code.
---*/
var GeneratorFunction = Object.getPrototypeOf(function* () {}).constructor;
var g = GeneratorFunction('yield 1;');
var iter = g();
var result;
result = iter.next();
assert.sameValue(result.value, 1, 'First result `value`');
assert.sameValue(result.done, false, 'First result `done` flag');
result = iter.next();
assert.sameValue(result.value, undefined, 'Final result `value`');
assert.sameValue(result.done, true, 'Final result `done` flag');