LayoutTests/ietestcenter/Javascript/TestCases/15.4.4.15-4-3.js

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ES5Harness.registerTest( {
id: "15.4.4.15-4-3",

path: "TestCases/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-4-3.js",

description: "Array.prototype.lastIndexOf returns -1 if 'length' is 0 (length overridden to false (type conversion))",

test: function testcase() {
  
 var i = Array.prototype.lastIndexOf.call({length: false}, 1);
  
  if (i === -1) {
    return true;
  }
 },

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