test/built-ins/Array/prototype/indexOf/15.4.4.14-3-20.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.indexof
es5id: 15.4.4.14-3-20
description: >
    Array.prototype.indexOf - 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.indexOf.call(obj, true), 1, 'Array.prototype.indexOf.call(obj, true)');
assert.sameValue(Array.prototype.indexOf.call(obj, 2), -1, 'Array.prototype.indexOf.call(obj, 2)');