Наследование: ConfigurationValidatorBase
		public void CanValidate ()
		{
			PositiveTimeSpanValidator v = new PositiveTimeSpanValidator ();

			Assert.IsTrue (v.CanValidate (typeof (TimeSpan)), "A1");
			Assert.IsFalse (v.CanValidate (typeof (int)), "A2");
			Assert.IsFalse (v.CanValidate (typeof (long)), "A3");
		}
		public void Validate_fail2 ()
		{
			PositiveTimeSpanValidator v = new PositiveTimeSpanValidator ();
			v.Validate (new TimeSpan (-10000));
		}
		public void Validate_inRange ()
		{
			PositiveTimeSpanValidator v = new PositiveTimeSpanValidator ();
			v.Validate (new TimeSpan (7000));
		}