1 files changed, 113 insertions, 0 deletions
diff --git a/crypto/test/src/asn1/test/DERUTF8StringTest.cs b/crypto/test/src/asn1/test/DERUTF8StringTest.cs
new file mode 100644
index 000000000..be4dace79
--- /dev/null
+++ b/crypto/test/src/asn1/test/DERUTF8StringTest.cs
@@ -0,0 +1,113 @@
+using System;
+
+using NUnit.Framework;
+
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Test;
+
+namespace Org.BouncyCastle.Asn1.Tests
+{
+	[TestFixture]
+	public class DerUtf8StringTest
+		: ITest
+	{
+		/**
+			* Unicode code point U+10400 coded as surrogate in two native Java UTF-16
+			* code units
+			*/
+		private readonly static char[] glyph1_utf16 = { (char)0xd801, (char)0xdc00 };
+
+		/**
+		 * U+10400 coded in UTF-8
+		 */
+		private readonly static byte[] glyph1_utf8 = { (byte)0xF0, (byte)0x90, (byte)0x90, (byte)0x80 };
+
+		/**
+		 * Unicode code point U+6771 in native Java UTF-16
+		 */
+		private readonly static char[] glyph2_utf16 = { (char)0x6771 };
+
+		/**
+		 * U+6771 coded in UTF-8
+		 */
+		private readonly static byte[] glyph2_utf8 = { (byte)0xE6, (byte)0x9D, (byte)0xB1 };
+
+		/**
+		 * Unicode code point U+00DF in native Java UTF-16
+		 */
+		private readonly static char[] glyph3_utf16 = { (char)0x00DF };
+
+		/**
+		 * U+00DF coded in UTF-8
+		 */
+		private readonly static byte[] glyph3_utf8 = { (byte)0xC3, (byte)0x9f };
+
+		/**
+		 * Unicode code point U+0041 in native Java UTF-16
+		 */
+		private readonly static char[] glyph4_utf16 = { (char)0x0041 };
+
+		/**
+		 * U+0041 coded in UTF-8
+		 */
+		private readonly static byte[] glyph4_utf8 = { 0x41 };
+
+		private readonly static byte[][] glyphs_utf8 = { glyph1_utf8, glyph2_utf8, glyph3_utf8, glyph4_utf8 };
+
+		private readonly static char[][] glyphs_utf16 = { glyph1_utf16, glyph2_utf16, glyph3_utf16, glyph4_utf16 };
+
+		public ITestResult Perform()
+		{
+			try
+			{
+				for (int i = 0; i < glyphs_utf16.Length; i++)
+				{
+					string s = new string(glyphs_utf16[i]);
+					byte[] b1 = new DerUtf8String(s).GetEncoded();
+					byte[] temp = new byte[b1.Length - 2];
+					Array.Copy(b1, 2, temp, 0, b1.Length - 2);
+					byte[] b2 = new DerUtf8String(new DerOctetString(temp).GetOctets()).GetEncoded();
+					if (!Arrays.AreEqual(b1, b2))
+					{
+						return new SimpleTestResult(false, Name + ": failed UTF-8 encoding and decoding");
+					}
+					if (!Arrays.AreEqual(temp, glyphs_utf8[i]))
+					{
+						return new SimpleTestResult(false, Name + ": failed UTF-8 encoding and decoding");
+					}
+				}
+			}
+			catch (Exception e)
+			{
+				return new SimpleTestResult(false, Name + ": failed with Exception " + e.Message);
+			}
+
+			return new SimpleTestResult(true, Name + ": Okay");
+		}
+
+		public string Name
+		{
+			get
+			{
+				return "DERUTF8String";
+			}
+		}
+
+		public static void Main(
+			string[] args)
+		{
+			DerUtf8StringTest test = new DerUtf8StringTest();
+			ITestResult result = test.Perform();
+
+			Console.WriteLine(result);
+		}
+
+		[Test]
+		public void TestFunction()
+		{
+			string resultText = Perform().ToString();
+
+			Assert.AreEqual(Name + ": Okay", resultText);
+		}
+	}
+}