v8/test/mjsunit/harmony/generators-poisoned-properties.js

43 lines
1.3 KiB
JavaScript

// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-generators
function assertIteratorResult(value, done, result) {
assertEquals({value: value, done: done}, result);
}
function test(f) {
var cdesc = Object.getOwnPropertyDescriptor(f, "caller");
var adesc = Object.getOwnPropertyDescriptor(f, "arguments");
assertFalse(cdesc.enumerable);
assertFalse(cdesc.configurable);
assertFalse(adesc.enumerable);
assertFalse(adesc.configurable);
assertSame(cdesc.get, cdesc.set);
assertSame(cdesc.get, adesc.get);
assertSame(cdesc.get, adesc.set);
assertTrue(cdesc.get instanceof Function);
assertEquals(0, cdesc.get.length);
assertThrows(cdesc.get, TypeError);
assertThrows(function() { return f.caller; }, TypeError);
assertThrows(function() { f.caller = 42; }, TypeError);
assertThrows(function() { return f.arguments; }, TypeError);
assertThrows(function() { f.arguments = 42; }, TypeError);
}
function *sloppy() { test(sloppy); }
function *strict() { "use strict"; test(strict); }
test(sloppy);
test(strict);
assertIteratorResult(undefined, true, sloppy().next());
assertIteratorResult(undefined, true, strict().next());