public virtual void MultipleLayoutCallsProduceSameLayoutResult()
{
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(new MemoryStream()));
Document document = new Document(pdfDocument);
int minAllowedWidows = 5;
int overflowedToNextPageLinesNum = 2;
ParagraphWidowsControl widowsControl = new ParagraphWidowsControl(minAllowedWidows, minAllowedWidows - overflowedToNextPageLinesNum
, false);
Paragraph widowsParagraph = new Paragraph(OrphansWidowsTestUtil.PARA_TEXT).SetWidowsControl(widowsControl);
IRenderer paragraphRenderer = widowsParagraph.CreateRendererSubTree().SetParent(document.GetRenderer());
Rectangle effectiveArea = document.GetPageEffectiveArea(pdfDocument.GetDefaultPageSize());
float linesHeight = OrphansWidowsTestUtil.CalculateHeightForLinesNum(document, widowsParagraph, effectiveArea
.GetWidth(), overflowedToNextPageLinesNum, false);
Rectangle layoutAreaRect = new Rectangle(effectiveArea).SetHeight(linesHeight + OrphansWidowsTestUtil.LINES_SPACE_EPS
);
LayoutContext layoutContext = new LayoutContext(new LayoutArea(1, layoutAreaRect));
LayoutResult firstLayoutResult = paragraphRenderer.Layout(layoutContext);
LayoutResult secondLayoutResult = paragraphRenderer.Layout(layoutContext);
// toString() comparison is used since it contains report on status, areaBreak and occupiedArea
NUnit.Framework.Assert.AreEqual(firstLayoutResult.ToString(), secondLayoutResult.ToString());
ParagraphRenderer firstSplitRenderer = (ParagraphRenderer)firstLayoutResult.GetSplitRenderer();
ParagraphRenderer secondSplitRenderer = (ParagraphRenderer)secondLayoutResult.GetSplitRenderer();
NUnit.Framework.Assert.IsNotNull(firstSplitRenderer);
NUnit.Framework.Assert.IsNotNull(secondSplitRenderer);
NUnit.Framework.Assert.AreEqual(firstSplitRenderer.ToString(), secondSplitRenderer.ToString());
ParagraphRenderer firstOverflowRenderer = (ParagraphRenderer)firstLayoutResult.GetOverflowRenderer();
ParagraphRenderer secondOverflowRenderer = (ParagraphRenderer)secondLayoutResult.GetOverflowRenderer();
NUnit.Framework.Assert.IsNotNull(firstOverflowRenderer);
NUnit.Framework.Assert.IsNotNull(secondOverflowRenderer);
IList <IRenderer> firstOverflowRendererChildren = firstOverflowRenderer.GetChildRenderers();
IList <IRenderer> secondOverflowRendererChildren = secondOverflowRenderer.GetChildRenderers();
NUnit.Framework.Assert.IsNotNull(firstOverflowRendererChildren);
NUnit.Framework.Assert.IsNotNull(secondOverflowRendererChildren);
NUnit.Framework.Assert.AreEqual(firstOverflowRendererChildren.Count, secondOverflowRendererChildren.Count);
}
