TEST_F(EnergyPlusFixture,ReverseTranslator_ScheduleDayInterval) {
  // ScheduleDayInterval time entries contain the string 'Until: ' that must be
  // stripped off before constructing a Time object. We are also more lenient in
  // making this optional.
  Workspace ws(StrictnessLevel::Draft,IddFileType(IddFileType::EnergyPlus));
  OptionalWorkspaceObject owo = ws.addObject(IdfObject(IddObjectType::Schedule_Day_Interval));
  ASSERT_TRUE(owo);
  WorkspaceObject object = *owo;
  object.setName("Heating Setpoint Design Day");
  StringVector groupValues(2u);
  groupValues[0] = std::string("Until: 12:00");
  groupValues[1] = std::string("21.1");
  object.pushExtensibleGroup(groupValues);
  groupValues[0] = std::string("24:00");
  groupValues[1] = std::string("20.5");
  object.pushExtensibleGroup(groupValues);

  ReverseTranslator translator;
  Model model = translator.translateWorkspace(ws);
  EXPECT_TRUE(translator.errors().empty());
  // There are warnings related to ws being a partial model.
  EXPECT_TRUE(translator.untranslatedIdfObjects().empty());
  ScheduleDayVector daySchedules = model.getModelObjects<ScheduleDay>();
  ASSERT_EQ(1u,daySchedules.size());
  ScheduleDay daySchedule = daySchedules[0];
  DoubleVector values = daySchedule.values();
  ASSERT_EQ(2u,values.size());
  EXPECT_DOUBLE_EQ(21.1,values[0]);
  EXPECT_DOUBLE_EQ(20.5,values[1]);
  TimeVector times = daySchedule.times();
  ASSERT_EQ(2u,times.size());
  EXPECT_EQ(Time(0,12,0),times[0]);
  EXPECT_EQ(Time(0,24,0),times[1]);
}
boost::optional<IdfObject> ForwardTranslator::translateScheduleDay( ScheduleDay & modelObject )
{
  IdfObject scheduleDay = createRegisterAndNameIdfObject(openstudio::IddObjectType::Schedule_Day_Interval,
                                                         modelObject);

  boost::optional<ScheduleTypeLimits> scheduleTypeLimits = modelObject.scheduleTypeLimits();
  if (scheduleTypeLimits){
    boost::optional<IdfObject> idfScheduleTypeLimits = translateAndMapModelObject(*scheduleTypeLimits);
    if (idfScheduleTypeLimits){
      scheduleDay.setString(Schedule_Day_IntervalFields::ScheduleTypeLimitsName, idfScheduleTypeLimits->name().get());
    }
  }

  if (modelObject.interpolatetoTimestep()){
    scheduleDay.setString(Schedule_Day_IntervalFields::InterpolatetoTimestep, "Yes");
  }else{
    scheduleDay.setString(Schedule_Day_IntervalFields::InterpolatetoTimestep, "No");
  }

  std::vector<double> values = modelObject.values();
  std::vector<openstudio::Time> times = modelObject.times();
  
  unsigned N = values.size();
  OS_ASSERT(N == times.size());

  scheduleDay.clearExtensibleGroups();

  for (unsigned i = 0; i < N; ++i){
    IdfExtensibleGroup group = scheduleDay.pushExtensibleGroup();

    std::string hourPrefix;
    std::string minutePrefix;

    int hours = times[i].hours() + 24*times[i].days();
    if (hours < 10){
      hourPrefix = "0";
    }

    int minutes = times[i].minutes() + floor((times[i].seconds()/60.0) + 0.5);
    if (minutes < 10){
      minutePrefix = "0";
    }

    std::stringstream ss;
    ss << hourPrefix << hours << ":" << minutePrefix << minutes;

    group.setString(Schedule_Day_IntervalExtensibleFields::Time, ss.str());
    group.setDouble(Schedule_Day_IntervalExtensibleFields::ValueUntilTime, values[i]);
  }

  return scheduleDay;
}