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

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

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

description: "Array.prototype.lastIndexOf returns -1 if 'length' is 0 (generic 'array' with length 0 )",

test: function testcase() {
  foo.prototype = new Array(1, 2, 3);
  function foo() {}
  var f = new foo();
  f.length = 0;
  
 var i = Array.prototype.lastIndexOf.call({length: 0}, 1);
  
  if (i === -1) {
    return true;
  }
 },

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