public void TestAdds()
{
var firstSegment = new MockSegmentModel(0, 10, 0);
var secondSegment = new MockSegmentModel(0, 10, 1);
var thirdSegment = new MockSegmentModel(15, 25, 0);
_segmentModelCollection.Add(firstSegment);
_segmentModelCollection.Add(secondSegment);
_segmentModelCollection.Add(thirdSegment);
Assert.Equal(3, _segmentModelCollection.Count);
// Check sort order (should order by TrackNumber, then by StartFrame)
Assert.Equal(firstSegment, _segmentModelCollection[0]);
Assert.Equal(thirdSegment, _segmentModelCollection[1]);
Assert.Equal(secondSegment, _segmentModelCollection[2]);
}
