js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-3-22.js


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// 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 throws TypeError exception when
    'length' is an object with toString and valueOf methods that don�t
    return primitive values
---*/

var toStringAccessed = false;
var valueOfAccessed = false;

var obj = {
  1: true,
  length: {
    toString: function() {
      toStringAccessed = true;
      return {};
    },

    valueOf: function() {
      valueOfAccessed = true;
      return {};
    }
  }
};

assert.throws(TypeError, function() {
  Array.prototype.lastIndexOf.call(obj, true);
});

assert(toStringAccessed, 'toStringAccessed');
assert(valueOfAccessed, 'valueOfAccessed');

reportCompare(0, 0);