public void CopyTest()
{
TimeInterval readOnlyTimeInterval = new TimeInterval( start, end );
Assert.AreEqual( readOnlyTimeInterval.Copy( TimeSpan.Zero ), readOnlyTimeInterval );
TimeInterval timeInterval = new TimeInterval( start, end );
Assert.AreEqual( timeInterval.Start, start );
Assert.AreEqual( timeInterval.End, end );
ITimeInterval noMoveTimeInterval = timeInterval.Copy( TimeSpan.Zero );
Assert.AreEqual( noMoveTimeInterval.Start, start );
Assert.AreEqual( noMoveTimeInterval.End, end );
Assert.AreEqual( noMoveTimeInterval.Duration, duration );
TimeSpan forwardOffset = new TimeSpan( 2, 30, 15 );
ITimeInterval forwardTimeInterval = timeInterval.Copy( forwardOffset );
Assert.AreEqual( forwardTimeInterval.Start, start.Add( forwardOffset ) );
Assert.AreEqual( forwardTimeInterval.End, end.Add( forwardOffset ) );
TimeSpan backwardOffset = new TimeSpan( -1, 10, 30 );
ITimeInterval backwardTimeInterval = timeInterval.Copy( backwardOffset );
Assert.AreEqual( backwardTimeInterval.Start, start.Add( backwardOffset ) );
Assert.AreEqual( backwardTimeInterval.End, end.Add( backwardOffset ) );
}
