internal static void CheckHeights(TextDocument document, HeightTree heightTree)
{
double[] heights = document.Lines.Select(l => heightTree.GetIsCollapsed(l) ? 0 : heightTree.GetHeight(l)).ToArray();
double[] visualPositions = new double[document.LineCount + 1];
for (int i = 0; i < heights.Length; i++)
{
visualPositions[i + 1] = visualPositions[i] + heights[i];
}
foreach (DocumentLine ls in document.Lines)
{
Assert.AreEqual(visualPositions[ls.LineNumber - 1], heightTree.GetVisualPosition(ls));
}
Assert.AreEqual(visualPositions[document.LineCount], heightTree.TotalHeight);
}