Add PdfString test with unicode string.

Autoported commit.
Original commit hash: [2c92884cb]

Author: pavel-alay

itext.tests/itext.kernel.tests/itext/kernel/pdf/PdfStringTest.cs

@@ -85,5 +85,14 @@ public virtual void TestPdfDocumentInfoStringEncoding01() {
             NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(destinationFolder + fileName, sourceFolder
                  + "cmp_" + fileName, destinationFolder, "diff_"));
         }
+
+        /// <exception cref="System.IO.IOException"/>
+        /// <exception cref="System.Exception"/>
+        [NUnit.Framework.Test]
+        public virtual void TestUnicodeString() {
+            String unicode = "Привет!";
+            PdfString @string = new PdfString(unicode);
+            NUnit.Framework.Assert.AreNotEqual(unicode, @string.ToUnicodeString());
+        }
     }
 }

port-hash

@@ -1 +1 @@
-09282149a2b61964c6b1b0fa6d08498c955ef8e0
+2c92884cb867426f4269af66b88cdc0f99421067