// Copyright 2018 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. | |
/* Test behaviors when the prototype has elements */ | |
// lastIndexOf | |
(function () { | |
var array = [,]; | |
function lastIndexOf(val) { | |
return array.lastIndexOf(val); | |
} | |
assertEquals(lastIndexOf(6), -1); | |
array.__proto__.push(6); | |
assertEquals(lastIndexOf(6), 0); | |
})(); |