Add tests to the setModified method

DEVSIX-3430

Autoported commit.
Original commit hash: [420e93833]

Author: EvgenyB1001

itext.tests/itext.kernel.tests/itext/kernel/pdf/PdfNameTreeTest.cs

@@ -136,5 +136,49 @@ public virtual void AnnotationAppearanceTest() {
             pdfDocument.Close();
             NUnit.Framework.Assert.AreEqual(1, objs.Count);
         }
+
+        [NUnit.Framework.Test]
+        public virtual void SetModifiedFlagTest() {
+            TestSetModified(false);
+        }
+
+        [NUnit.Framework.Test]
+        public virtual void SetModifiedFlagAppendModeTest() {
+            TestSetModified(true);
+        }
+
+        private static void TestSetModified(bool isAppendMode) {
+            String[] expectedKeys = new String[] { "new_key1", "new_key2", "new_key3" };
+            MemoryStream sourceFile = CreateDocumentInMemory();
+            MemoryStream modifiedFile = new MemoryStream();
+            PdfReader reader = new PdfReader(new MemoryStream(sourceFile.ToArray()));
+            PdfDocument pdfDoc = isAppendMode ? new PdfDocument(reader, new PdfWriter(modifiedFile), new StampingProperties
+                ().UseAppendMode()) : new PdfDocument(reader, new PdfWriter(modifiedFile));
+            PdfNameTree nameTree = pdfDoc.GetCatalog().GetNameTree(PdfName.Dests);
+            IDictionary<String, PdfObject> names = nameTree.GetNames();
+            List<String> keys = new List<String>(names.Keys);
+            for (int i = 0; i < keys.Count; i++) {
+                names.Put(expectedKeys[i], names.Get(keys[i]));
+                names.JRemove(keys[i]);
+            }
+            nameTree.SetModified();
+            pdfDoc.Close();
+            reader = new PdfReader(new MemoryStream(modifiedFile.ToArray()));
+            pdfDoc = new PdfDocument(reader);
+            nameTree = pdfDoc.GetCatalog().GetNameTree(PdfName.Dests);
+            ICollection<String> actualKeys = nameTree.GetNames().Keys;
+            NUnit.Framework.Assert.AreEqual(expectedKeys, actualKeys.ToArray());
+        }
+
+        private static MemoryStream CreateDocumentInMemory() {
+            MemoryStream boas = new MemoryStream();
+            PdfDocument pdfDoc = new PdfDocument(new PdfWriter(boas));
+            pdfDoc.AddNewPage();
+            pdfDoc.GetCatalog().GetNameTree(PdfName.Dests).AddEntry("key1", new PdfArray(new float[] { 0, 0, 0, 0 }));
+            pdfDoc.GetCatalog().GetNameTree(PdfName.Dests).AddEntry("key2", new PdfArray(new float[] { 1, 1, 1, 1 }));
+            pdfDoc.GetCatalog().GetNameTree(PdfName.Dests).AddEntry("key3", new PdfArray(new float[] { 2, 2, 2, 2 }));
+            pdfDoc.Close();
+            return boas;
+        }
     }
 }

port-hash

@@ -1 +1 @@
-06cae6cac38eff8ee313064c2bdb6eeb85996d70
+420e93833bb777b0494cd513576565c782b226d3