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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 returns -1 if 'length' is 0 ( length
is object overridden with obj w/o valueOf (toString))
---*/
foo.prototype = new Array(1, 2, 3);
function foo() {}
var f = new foo();
var o = {
toString: function() {
return '0';
}
};
f.length = o;
// objects inherit the default valueOf method of the Object object;
// that simply returns the itself. Since the default valueOf() method
// does not return a primitive value, ES next tries to convert the object
// to a number by calling its toString() method and converting the
// resulting string to a number.
var i = Array.prototype.lastIndexOf.call({
length: {
toString: function() {
return '0';
}
}
}, 1);
assert.sameValue(i, -1, 'i');
reportCompare(0, 0);
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