public virtual void SetDefaultAppearanceTest()
{
PdfDocument outputDoc = CreateDocument();
PdfAcroForm acroForm = PdfAcroForm.GetAcroForm(outputDoc, true);
acroForm.SetDefaultAppearance("default appearance");
bool isModified = acroForm.GetPdfObject().IsModified();
bool isReleaseForbidden = acroForm.GetPdfObject().IsReleaseForbidden();
PdfObject calculationOrder = acroForm.GetPdfObject().Get(PdfName.DA);
outputDoc.Close();
NUnit.Framework.Assert.AreEqual(new PdfString("default appearance"), calculationOrder);
NUnit.Framework.Assert.IsTrue(isModified);
NUnit.Framework.Assert.IsTrue(isReleaseForbidden);
}