LayoutTests/ietestcenter/Javascript/TestCases/15.4.4.14-9-9.js

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ES5Harness.registerTest( {
id: "15.4.4.14-9-9",

path: "TestCases/chapter15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-9.js",

description: "Array.prototype.indexOf must return correct index (Sparse Array)",

test: function testcase() {
  var a = new Array(0,1);  
  a[4294967294] = 2;          // 2^32-2 - is max array element
  a[4294967295] = 3;          // 2^32-1 added as non-array element property
  a[4294967296] = 4;          // 2^32   added as non-array element property
  a[4294967297] = 5;          // 2^32+1 added as non-array element property

  // start searching near the end so in case implementation actually tries to test all missing elements!!
  return (a.indexOf(2,4294967290 ) === 4294967294 &&    
      a.indexOf(3,4294967290) === -1 &&   
      a.indexOf(4,4294967290) === -1 &&  
      a.indexOf(5,4294967290) === -1   ) ;
 },

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