blob: d6fd772f0834fb6afcaeea01bfb07e3d595cf12f [file] [log] [blame]
/// Copyright (c) 2009 Microsoft Corporation
///
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/// the following disclaimer.
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ES5Harness.registerTest({
id: "15.4.4.14-3-19",
path: "TestCases/chapter15/15.4/15.4.4/15.4.4.14/15.4.4.14-3-19.js",
description: "Array.prototype.indexOf when value of 'length' is an Object which has an own toString method.",
test: function testcase() {
// objects inherit the default valueOf() method from Object
// that simply returns 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 obj = {
1: true,
2: 2,
length: {
toString: function () {
return '2';
}
}
};
return Array.prototype.indexOf.call(obj, true) === 1 &&
Array.prototype.indexOf.call(obj, 2) === -1;
},
precondition: function prereq() {
return fnExists(Array.prototype.indexOf);
}
});