te before noon");
},"stepDown on step value minus");

test(function(){
  _StepTest.value = "12:00";
  _StepTest.step = "0";
  _StepTest.stepUp();
  assert_in_array(
    _StepTest.value,
    [
      "12:01",
      "12:01:00",
      "12:01:00.0",
      "12:01:00.00",
      "12:01:00.000"],
    "a valid time string representing 1 minute after noon");
} , "stepUp on step value zero ");
test(function(){
  _StepTest.value = "12:00";
  _StepTest.step = "0";
  _StepTest.stepDown();
  assert_in_array(
    _StepTest.