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/** note that prior to the finally ES5 draft SameValue was used for comparisions
and hence NaNs could be found using indexOf **/


ES5Harness.registerTest( {
id: "15.4.4.14-9-10",

path: "TestCases/chapter15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-10.js",

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

test: function testcase() {
  var _NaN = NaN;
  var a = new Array("NaN",undefined,0,false,null,{toString:function(){return NaN}},"false",_NaN,NaN);
  if (a.indexOf(NaN) === -1)  // NaN is equal to nothing, including itself.
  {
    return true;
  }
 },

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