public void CreateFromStartDuration_EndCorrect()
{
//arrange
var start = new TimeSpan(1, 0, 0);
var duration = new TimeSpan(3, 0, 0);
var range = TimeSpanRange.FromDuration(start, duration);
var expected = start.Add(duration);
//act
var actual = range.End;
//assert
Assert.Equal(expected, actual);
}
