public virtual void HashCodeTest()
{
PdfIndirectReference firstReference = new PdfIndirectReference(null, 41, 7);
PdfIndirectReference secondReference = new PdfIndirectReference(null, 41, 7);
NUnit.Framework.Assert.AreNotSame(firstReference, secondReference);
NUnit.Framework.Assert.AreEqual(firstReference.GetHashCode(), secondReference.GetHashCode());
NUnit.Framework.Assert.AreNotEqual(firstReference.GetHashCode(), new PdfIndirectReference(null, 42, 7).GetHashCode
());
NUnit.Framework.Assert.AreNotEqual(firstReference.GetHashCode(), new PdfIndirectReference(null, 41, 5).GetHashCode
());
using (PdfDocument firstDoc = new PdfDocument(new PdfWriter(new MemoryStream()))) {
using (PdfDocument secondDoc = new PdfDocument(new PdfWriter(new MemoryStream()))) {
// add a page to avoid exception throwing on close
firstDoc.AddNewPage();
secondDoc.AddNewPage();
PdfIndirectReference obj41Gen0 = new PdfIndirectReference(firstDoc, 41, 0);
NUnit.Framework.Assert.AreEqual(obj41Gen0.GetHashCode(), new PdfIndirectReference(firstDoc, 41, 0).GetHashCode
());
NUnit.Framework.Assert.AreNotEqual(obj41Gen0.GetHashCode(), new PdfIndirectReference(secondDoc, 41, 0).GetHashCode
());
NUnit.Framework.Assert.AreNotEqual(obj41Gen0.GetHashCode(), new PdfIndirectReference(null, 41, 0).GetHashCode
());
}
}
}
/// <summary>Calculates hash code for the indirect reference taking into account the document it belongs to.</summary>
/// <param name="indRef">object to be hashed.</param>
/// <returns>calculated hash code.</returns>
protected internal static int CalculateIndRefKey(PdfIndirectReference indRef)
{
int result = indRef.GetHashCode();
result = 31 * result + indRef.GetDocument().GetHashCode();
return(result);
}