JSTests/test262/test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-20.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-array.prototype.lastindexof
description: >
    Array.prototype.lastIndexOf - value of 'length' is an Object which
    has an own valueOf method
---*/

//valueOf method will be invoked first, since hint is Number
var obj = {
  1: true,
  2: 2,

  length: {
    valueOf: function() {
      return 2;
    }
  }
};

assert.sameValue(Array.prototype.lastIndexOf.call(obj, true), 1, 'Array.prototype.lastIndexOf.call(obj, true)');
assert.sameValue(Array.prototype.lastIndexOf.call(obj, 2), -1, 'Array.prototype.lastIndexOf.call(obj, 2)');