public void TestLimitTo()
{
var date1From = new DateTime(1991, 01, 01);
var date1To = new DateTime(1999, 01, 01);
var date2From = new DateTime(2010, 01, 01);
var date2To = new DateTime(2015, 01, 01);
var dateToCheckFrom = new DateTime(1990, 01, 01);
var dateToCheckTo = new DateTime(2000, 01, 01);
var tempForecast = new TemperatureForecast(15, date1From, date1To);
var tempForecast2 = new TemperatureForecast(25, date2From, date2To);
var weatherForecast = new WeatherForecast(new [] { tempForecast, tempForecast2 });
weatherForecast.LimitTo(dateToCheckFrom, dateToCheckTo);
Assert.AreEqual(1, weatherForecast.Temperatures.Length);
}