LayoutTests/ietestcenter/Javascript/TestCases/15.4.4.15-1-16.js

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ES5Harness.registerTest( {

    id: "15.4.4.15-1-16",

    path: "TestCases/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-1-16.js",

    description: "Array.prototype.lastIndexOf applied to the document host object",

    test: function testcase() {

        var targetObj = ["document"];
        try {
            document[5] = targetObj;
            document.length = 100;
            return 5 === Array.prototype.lastIndexOf.call(document, targetObj);
        } finally {
            delete document[5];
            delete document.length;
        }
    },

    precondition: function prereq() {
        return fnExists(Array.prototype.lastIndexOf);
    }

});