mcs/class/System.Security/Test/System.Security.Cryptography.Xml/XmlDsigC14NTransformTest.cs

   1 //
   2 // XmlDsigC14NTransformTest.cs - NUnit Test Cases for XmlDsigC14NTransform
   3 //
   4 // Author:
   5 //      Sebastien Pouliot <sebastien@ximian.com>
   6 //      Aleksey Sanin (aleksey@aleksey.com)
   7 //
   8 // (C) 2002, 2003 Motus Technologies Inc. (http://www.motus.com)
   9 // (C) 2003 Aleksey Sanin (aleksey@aleksey.com)
  10 // (C) 2004 Novell (http://www.novell.com)
  11 //
  12
  13 using System;
  14 using System.IO;
  15 using System.Security.Cryptography.Xml;
  16 using System.Text;
  17 using System.Xml;
  18
  19 using NUnit.Framework;
  20
  21 namespace MonoTests.System.Security.Cryptography.Xml {
  22
  23         // Note: GetInnerXml is protected in XmlDsigC14NTransform making it
  24         // difficult to test properly. This class "open it up" :-)
  25         public class UnprotectedXmlDsigC14NTransform : XmlDsigC14NTransform {
  26                 public UnprotectedXmlDsigC14NTransform ()
  27                 {
  28                 }
  29
  30                 public UnprotectedXmlDsigC14NTransform (bool includeComments)
  31                         : base (includeComments)
  32                 {
  33                 }
  34
  35                 public XmlNodeList UnprotectedGetInnerXml () {
  36                         return base.GetInnerXml ();
  37                 }
  38         }
  39
  40         [TestFixture]
  41         public class XmlDsigC14NTransformTest {
  42
  43                 protected UnprotectedXmlDsigC14NTransform transform;
  44
  45                 [SetUp]
  46                 protected void SetUp ()
  47                 {
  48                         transform = new UnprotectedXmlDsigC14NTransform ();
  49                 }
  50
  51                 [TearDown]
  52                 protected void CleanUp ()
  53                 {
  54                         try {
  55                                 if (File.Exists ("doc.dtd"))
  56                                         File.Delete ("doc.dtd");
  57                                 if (File.Exists ("world.txt"))
  58                                         File.Delete ("world.txt");
  59                         }
  60                         catch {}
  61                 }
  62
  63                 [Test] // ctor ()
  64                 public void Constructor1 ()
  65                 {
  66                         Assert.AreEqual ("http://www.w3.org/TR/2001/REC-xml-c14n-20010315", transform.Algorithm, "Algorithm");
  67                         CheckProperties (transform);
  68                 }
  69
  70                 [Test] // ctor (Boolean)
  71                 public void Constructor2 ()
  72                 {
  73                         transform = new UnprotectedXmlDsigC14NTransform (true);
  74                         Assert.AreEqual ("http://www.w3.org/TR/2001/REC-xml-c14n-20010315#WithComments", transform.Algorithm, "Algorithm");
  75                         CheckProperties (transform);
  76
  77                         transform = new UnprotectedXmlDsigC14NTransform (false);
  78                         Assert.AreEqual ("http://www.w3.org/TR/2001/REC-xml-c14n-20010315", transform.Algorithm, "Algorithm");
  79                         CheckProperties (transform);
  80                 }
  81
  82                 void CheckProperties (XmlDsigC14NTransform transform)
  83                 {
  84                         Type[] input = transform.InputTypes;
  85                         Assert.IsTrue ((input.Length == 3), "Input #");
  86                         // check presence of every supported input types
  87                         bool istream = false;
  88                         bool ixmldoc = false;
  89                         bool ixmlnl = false;
  90                         foreach (Type t in input) {
  91                                 if (t.ToString () == "System.IO.Stream")
  92                                         istream = true;
  93                                 if (t.ToString () == "System.Xml.XmlDocument")
  94                                         ixmldoc = true;
  95                                 if (t.ToString () == "System.Xml.XmlNodeList")
  96                                         ixmlnl = true;
  97                         }
  98                         Assert.IsTrue (istream, "Input Stream");
  99                         Assert.IsTrue (ixmldoc, "Input XmlDocument");
 100                         Assert.IsTrue (ixmlnl, "Input XmlNodeList");
 101
 102                         Type[] output = transform.OutputTypes;
 103                         Assert.IsTrue ((output.Length == 1), "Output #");
 104                         // check presence of every supported output types
 105                         bool ostream = false;
 106                         foreach (Type t in output) {
 107                                 if (t.ToString () == "System.IO.Stream")
 108                                         ostream = true;
 109                         }
 110                         Assert.IsTrue (ostream, "Output Stream");
 111                 }
 112
 113                 [Test]
 114                 public void GetInnerXml ()
 115                 {
 116                         XmlNodeList xnl = transform.UnprotectedGetInnerXml ();
 117                         Assert.IsNull (xnl, "Default InnerXml");
 118                 }
 119
 120                 private string Stream2String (Stream s)
 121                 {
 122                         StringBuilder sb = new StringBuilder ();
 123                         int b = s.ReadByte ();
 124                         while (b != -1) {
 125                                 sb.Append (Convert.ToChar (b));
 126                                 b = s.ReadByte ();
 127                         }
 128                         return sb.ToString ();
 129                 }
 130
 131                 static string xml = "<Test  attrib='at ' xmlns=\"http://www.go-mono.com/\" > \r\n &#xD; <Toto/> text &amp; </Test   >";
 132                 // BAD for XmlDocument input (framework 1.0 result)
 133                 static string c14xml1 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> \r\n \r <Toto></Toto> text &amp; </Test>";
 134                 // GOOD for Stream input
 135                 static string c14xml2 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> \n &#xD; <Toto></Toto> text &amp; </Test>";
 136                 // GOOD for XmlDocument input. The difference is because once
 137                 // xml string is loaded to XmlDocument, there is no difference
 138                 // between \r and &#xD;, so every \r must be handled as &#xD;.
 139                 static string c14xml3 = "<Test xmlns=\"http://www.go-mono.com/\" attrib=\"at \"> &#xD;\n &#xD; <Toto></Toto> text &amp; </Test>";
 140
 141                 private XmlDocument GetDoc ()
 142                 {
 143                         XmlDocument doc = new XmlDocument ();
 144                         doc.PreserveWhitespace = true;
 145                         doc.LoadXml (xml);
 146                         return doc;
 147                 }
 148
 149                 [Test]
 150                 public void LoadInputAsXmlDocument ()
 151                 {
 152                         XmlDocument doc = GetDoc ();
 153                         transform.LoadInput (doc);
 154                         Stream s = (Stream) transform.GetOutput ();
 155                         string output = Stream2String (s);
 156 #if NET_1_1
 157                         Assert.AreEqual (c14xml3, output, "XmlDocument");
 158 #else
 159                         // .NET 1.0 keeps the \r\n (0x0D, 0x0A) - bug
 160                         Assert.AreEqual (c14xml1, output, "XmlDocument");
 161 #endif
 162                 }
 163
 164                 [Test]
 165 #if NET_2_0
 166                 [Category ("NotDotNet")]
 167                 // see LoadInputAsXmlNodeList2 description
 168 #endif
 169                 public void LoadInputAsXmlNodeList ()
 170                 {
 171                         XmlDocument doc = GetDoc ();
 172                         // Argument list just contains element Test.
 173                         transform.LoadInput (doc.ChildNodes);
 174                         Stream s = (Stream) transform.GetOutput ();
 175                         string output = Stream2String (s);
 176                         Assert.AreEqual ("<Test></Test>", output, "XmlChildNodes");
 177                 }
 178
 179                 [Test]
 180                 [Category ("NotDotNet")]
 181                 // MS has a bug that those namespace declaration nodes in
 182                 // the node-set are written to output. Related spec section is:
 183                 // http://www.w3.org/TR/2001/REC-xml-c14n-20010315#ProcessingModel
 184                 public void LoadInputAsXmlNodeList2 ()
 185                 {
 186                         XmlDocument doc = GetDoc ();
 187                         transform.LoadInput (doc.SelectNodes ("//*"));
 188                         Stream s = (Stream) transform.GetOutput ();
 189                         string output = Stream2String (s);
 190                         string expected = @"<Test><Toto></Toto></Test>";
 191                         Assert.AreEqual (expected, output, "XmlChildNodes");
 192                 }
 193
 194                 [Test]
 195                 public void LoadInputAsStream ()
 196                 {
 197                         MemoryStream ms = new MemoryStream ();
 198                         byte[] x = Encoding.ASCII.GetBytes (xml);
 199                         ms.Write (x, 0, x.Length);
 200                         ms.Position = 0;
 201                         transform.LoadInput (ms);
 202                         Stream s = (Stream) transform.GetOutput ();
 203                         string output = Stream2String (s);
 204                         Assert.AreEqual (c14xml2, output, "MemoryStream");
 205                 }
 206
 207                 [Test]
 208 #if NET_2_0
 209                 [ExpectedException (typeof (ArgumentException))]
 210 #else
 211                 // LAMESPEC: input MUST be one of InputType - but no exception is thrown (not documented)
 212 #endif
 213                 public void LoadInputWithUnsupportedType ()
 214                 {
 215                         byte[] bad = { 0xBA, 0xD };
 216                         transform.LoadInput (bad);
 217                 }
 218
 219                 [Test]
 220                 [ExpectedException (typeof (ArgumentException))]
 221                 public void UnsupportedOutput ()
 222                 {
 223                         XmlDocument doc = new XmlDocument();
 224                         object o = transform.GetOutput (doc.GetType ());
 225                 }
 226
 227                 [Test]
 228                 public void C14NSpecExample1 ()
 229                 {
 230                         using (StreamWriter sw = new StreamWriter ("doc.dtd", false, Encoding.ASCII)) {
 231                                 sw.Write ("<!-- presence, not content, required -->");
 232                                 sw.Close ();
 233                         }
 234                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample1Input);
 235                         Assert.AreEqual (C14NSpecExample1Output, res, "Example 1 from c14n spec - PIs, Comments, and Outside of Document Element (without comments)");
 236                 }
 237
 238                 [Test]
 239                 public void C14NSpecExample2 ()
 240                 {
 241                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample2Input);
 242                         Assert.AreEqual (C14NSpecExample2Output, res, "Example 2 from c14n spec - Whitespace in Document Content (without comments)");
 243                 }
 244
 245                 [Test]
 246                 public void C14NSpecExample3 ()
 247                 {
 248                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample3Input);
 249                         Assert.AreEqual (C14NSpecExample3Output, res, "Example 3 from c14n spec - Start and End Tags (without comments)");
 250                 }
 251
 252                 [Test]
 253 //              [Ignore ("This test should be fine, but it does not pass under MS.NET")]
 254                 public void C14NSpecExample4 ()
 255                 {
 256                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample4Input);
 257                         Assert.AreEqual (C14NSpecExample4Output, res, "Example 4 from c14n spec - Character Modifications and Character References (without comments)");
 258                 }
 259
 260                 [Test]
 261                 public void C14NSpecExample5 ()
 262                 {
 263                         using (StreamWriter sw = new StreamWriter ("world.txt", false, Encoding.ASCII)) {
 264                                 sw.Write ("world");
 265                                 sw.Close ();
 266                         }
 267                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample5Input);
 268                         Assert.AreEqual (C14NSpecExample5Output, res, "Example 5 from c14n spec - Entity References (without comments)");
 269                 }
 270
 271                 [Test]
 272                 public void C14NSpecExample6 ()
 273                 {
 274                         string res = ExecuteXmlDSigC14NTransform (C14NSpecExample6Input);
 275                         Assert.AreEqual (C14NSpecExample6Output, res, "Example 6 from c14n spec - UTF-8 Encoding (without comments)");
 276                 }
 277
 278                 private string ExecuteXmlDSigC14NTransform (string InputXml)
 279                 {
 280                         XmlDocument doc = new XmlDocument ();
 281                         doc.PreserveWhitespace = true;
 282                         doc.LoadXml (InputXml);
 283
 284                         // Testing default attribute support with
 285                         // vreader.ValidationType = ValidationType.None.
 286                         //
 287                         UTF8Encoding utf8 = new UTF8Encoding ();
 288                         byte[] data = utf8.GetBytes (InputXml.ToString ());
 289                         Stream stream = new MemoryStream (data);
 290                         XmlTextReader reader = new XmlTextReader (stream);
 291                         XmlValidatingReader vreader = new XmlValidatingReader (reader);
 292                         vreader.ValidationType = ValidationType.None;
 293                         vreader.EntityHandling = EntityHandling.ExpandCharEntities;
 294                         doc.Load (vreader);
 295
 296                         transform.LoadInput (doc);
 297                         return Stream2String ((Stream)transform.GetOutput ());
 298                 }
 299
 300                 //
 301                 // Example 1 from C14N spec - PIs, Comments, and Outside of Document Element:
 302                 // http://www.w3.org/TR/xml-c14n#Example-OutsideDoc
 303                 //
 304                 // Aleksey:
 305                 // removed reference to an empty external DTD
 306                 //
 307                 static string C14NSpecExample1Input =
 308                         "<?xml version=\"1.0\"?>\n" +
 309                         "\n" +
 310                         "<?xml-stylesheet   href=\"doc.xsl\"\n" +
 311                         "   type=\"text/xsl\"   ?>\n" +
 312                         "\n" +
 313                         // "<!DOCTYPE doc SYSTEM \"doc.dtd\">\n" +
 314                         "\n" +
 315                         "<doc>Hello, world!<!-- Comment 1 --></doc>\n" +
 316                         "\n" +
 317                         "<?pi-without-data     ?>\n\n" +
 318                         "<!-- Comment 2 -->\n\n" +
 319                         "<!-- Comment 3 -->\n";
 320                 static string C14NSpecExample1Output =
 321                         "<?xml-stylesheet href=\"doc.xsl\"\n" +
 322                         "   type=\"text/xsl\"   ?>\n" +
 323                         "<doc>Hello, world!</doc>\n" +
 324                         "<?pi-without-data?>";
 325
 326                 //
 327                 // Example 2 from C14N spec - Whitespace in Document Content:
 328                 // http://www.w3.org/TR/xml-c14n#Example-WhitespaceInContent
 329                 //
 330                 static string C14NSpecExample2Input =
 331                         "<doc>\n" +
 332                         "  <clean>   </clean>\n" +
 333                         "   <dirty>   A   B   </dirty>\n" +
 334                         "   <mixed>\n" +
 335                         "      A\n" +
 336                         "      <clean>   </clean>\n" +
 337                         "      B\n" +
 338                         "      <dirty>   A   B   </dirty>\n" +
 339                         "      C\n" +
 340                         "   </mixed>\n" +
 341                         "</doc>\n";
 342                 static string C14NSpecExample2Output =
 343                         "<doc>\n" +
 344                         "  <clean>   </clean>\n" +
 345                         "   <dirty>   A   B   </dirty>\n" +
 346                         "   <mixed>\n" +
 347                         "      A\n" +
 348                         "      <clean>   </clean>\n" +
 349                         "      B\n" +
 350                         "      <dirty>   A   B   </dirty>\n" +
 351                         "      C\n" +
 352                         "   </mixed>\n" +
 353                         "</doc>";
 354
 355                 //
 356                 // Example 3 from C14N spec - Start and End Tags:
 357                 // http://www.w3.org/TR/xml-c14n#Example-SETags
 358                 //
 359                 static string C14NSpecExample3Input =
 360                         "<!DOCTYPE doc [<!ATTLIST e9 attr CDATA \"default\">]>\n" +
 361                         "<doc>\n" +
 362                         "   <e1   />\n" +
 363                         "   <e2   ></e2>\n" +
 364                         "   <e3    name = \"elem3\"   id=\"elem3\"    />\n" +
 365                         "   <e4    name=\"elem4\"   id=\"elem4\"    ></e4>\n" +
 366                         "   <e5 a:attr=\"out\" b:attr=\"sorted\" attr2=\"all\" attr=\"I\'m\"\n" +
 367                         "       xmlns:b=\"http://www.ietf.org\" \n" +
 368                         "       xmlns:a=\"http://www.w3.org\"\n" +
 369                         "       xmlns=\"http://www.uvic.ca\"/>\n" +
 370                         "   <e6 xmlns=\"\" xmlns:a=\"http://www.w3.org\">\n" +
 371                         "       <e7 xmlns=\"http://www.ietf.org\">\n" +
 372                         "           <e8 xmlns=\"\" xmlns:a=\"http://www.w3.org\">\n" +
 373                         "               <e9 xmlns=\"\" xmlns:a=\"http://www.ietf.org\"/>\n" +
 374                         "           </e8>\n" +
 375                         "       </e7>\n" +
 376                         "   </e6>\n" +
 377                         "</doc>\n";
 378                 static string C14NSpecExample3Output =
 379                         "<doc>\n" +
 380                         "   <e1></e1>\n" +
 381                         "   <e2></e2>\n" +
 382                         "   <e3 id=\"elem3\" name=\"elem3\"></e3>\n" +
 383                         "   <e4 id=\"elem4\" name=\"elem4\"></e4>\n" +
 384                         "   <e5 xmlns=\"http://www.uvic.ca\" xmlns:a=\"http://www.w3.org\" xmlns:b=\"http://www.ietf.org\" attr=\"I\'m\" attr2=\"all\" b:attr=\"sorted\" a:attr=\"out\"></e5>\n" +
 385                         "   <e6 xmlns:a=\"http://www.w3.org\">\n" +
 386                         "       <e7 xmlns=\"http://www.ietf.org\">\n" +
 387                         "           <e8 xmlns=\"\">\n" +
 388                         "               <e9 xmlns:a=\"http://www.ietf.org\" attr=\"default\"></e9>\n" +
 389 //                      "               <e9 xmlns:a=\"http://www.ietf.org\"></e9>\n" +
 390                         "           </e8>\n" +
 391                         "       </e7>\n" +
 392                         "   </e6>\n" +
 393                         "</doc>";
 394
 395
 396                 //
 397                 // Example 4 from C14N spec - Character Modifications and Character References:
 398                 // http://www.w3.org/TR/xml-c14n#Example-Chars
 399                 //
 400                 // Aleksey:
 401                 // This test does not include "normId" element
 402                 // because it has an invalid ID attribute "id" which
 403                 // should be normalized by XML parser. Currently Mono
 404                 // does not support this (see comment after this example
 405                 // in the spec).
 406                 static string C14NSpecExample4Input =
 407                         "<!DOCTYPE doc [<!ATTLIST normId id ID #IMPLIED>]>\n" +
 408                         "<doc>\n" +
 409                         "   <text>First line&#x0d;&#10;Second line</text>\n" +
 410                         "   <value>&#x32;</value>\n" +
 411                         "   <compute><![CDATA[value>\"0\" && value<\"10\" ?\"valid\":\"error\"]]></compute>\n" +
 412                         "   <compute expr=\'value>\"0\" &amp;&amp; value&lt;\"10\" ?\"valid\":\"error\"\'>valid</compute>\n" +
 413                         "   <norm attr=\' &apos;   &#x20;&#13;&#xa;&#9;   &apos; \'/>\n" +
 414                         // "   <normId id=\' &apos;   &#x20;&#13;&#xa;&#9;   &apos; \'/>\n" +
 415                         "</doc>\n";
 416                 static string C14NSpecExample4Output =
 417                         "<doc>\n" +
 418                         "   <text>First line&#xD;\n" +
 419                         "Second line</text>\n" +
 420                         "   <value>2</value>\n" +
 421                         "   <compute>value&gt;\"0\" &amp;&amp; value&lt;\"10\" ?\"valid\":\"error\"</compute>\n" +
 422                         "   <compute expr=\"value>&quot;0&quot; &amp;&amp; value&lt;&quot;10&quot; ?&quot;valid&quot;:&quot;error&quot;\">valid</compute>\n" +
 423                         "   <norm attr=\" \'    &#xD;&#xA;&#x9;   \' \"></norm>\n" +
 424                         // "   <normId id=\"\' &#xD;&#xA;&#x9; \'\"></normId>\n" +
 425                         "</doc>";
 426
 427                 //
 428                 // Example 5 from C14N spec - Entity References:
 429                 // http://www.w3.org/TR/xml-c14n#Example-Entities
 430                 //
 431                 static string C14NSpecExample5Input =
 432                         "<!DOCTYPE doc [\n" +
 433                         "<!ATTLIST doc attrExtEnt ENTITY #IMPLIED>\n" +
 434                         "<!ENTITY ent1 \"Hello\">\n" +
 435                         "<!ENTITY ent2 SYSTEM \"world.txt\">\n" +
 436                         "<!ENTITY entExt SYSTEM \"earth.gif\" NDATA gif>\n" +
 437                         "<!NOTATION gif SYSTEM \"viewgif.exe\">\n" +
 438                         "]>\n" +
 439                         "<doc attrExtEnt=\"entExt\">\n" +
 440                         "   &ent1;, &ent2;!\n" +
 441                         "</doc>\n" +
 442                         "\n" +
 443                         "<!-- Let world.txt contain \"world\" (excluding the quotes) -->\n";
 444                 static string C14NSpecExample5Output =
 445                         "<doc attrExtEnt=\"entExt\">\n" +
 446                         "   Hello, world!\n" +
 447                         "</doc>";
 448
 449                 //
 450                 // Example 6 from C14N spec - UTF-8 Encoding:
 451                 // http://www.w3.org/TR/xml-c14n#Example-UTF8
 452                 //
 453                 static string C14NSpecExample6Input =
 454                         "<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n" +
 455                         "<doc>&#169;</doc>\n";
 456                 static string C14NSpecExample6Output =
 457                         "<doc>\xC2\xA9</doc>";
 458
 459
 460                 //
 461                 // Example 7 from C14N spec - Document Subsets:
 462                 // http://www.w3.org/TR/xml-c14n#Example-DocSubsets
 463                 //
 464                 // Aleksey:
 465                 // Well, XPath support in Mono is far from complete....
 466                 // I was not able to simplify the xpath expression from this test
 467                 // so it runs on Mono and still makes sense for testing this feature.
 468                 // Thus this test is not included in the suite now.
 469                 static string C14NSpecExample7Input =
 470                         "<!DOCTYPE doc [\n" +
 471                         "<!ATTLIST e2 xml:space (default|preserve) \'preserve\'>\n" +
 472                         "<!ATTLIST e3 id ID #IMPLIED>\n" +
 473                         "]>\n" +
 474                         "<doc xmlns=\"http://www.ietf.org\" xmlns:w3c=\"http://www.w3.org\">\n" +
 475                         "   <e1>\n" +
 476                         "      <e2 xmlns=\"\">\n" +
 477                         "         <e3 id=\"E3\"/>\n" +
 478                         "      </e2>\n" +
 479                         "   </e1>\n" +
 480                         "</doc>\n";
 481
 482                 static string C14NSpecExample7Xpath =
 483                         "(//.|//@*|//namespace::*)\n" +
 484                         "[\n" +
 485                         "self::ietf:e1\n" +
 486                         "    or\n" +
 487                         "(parent::ietf:e1 and not(self::text() or self::e2))\n" +
 488                         "    or\n" +
 489                         "count(id(\"E3\")|ancestor-or-self::node()) = count(ancestor-or-self::node())\n" +
 490                         "]";
 491                 static string C14NSpecExample7Output =
 492                         "<e1 xmlns=\"http://www.ietf.org\" xmlns:w3c=\"http://www.w3.org\"><e3 xmlns=\"\" id=\"E3\" xml:space=\"preserve\"></e3></e1>";
 493
 494                 [Test]
 495                 public void SimpleNamespacePrefixes ()
 496                 {
 497                         string input = "<a:Action xmlns:a='urn:foo'>http://tempuri.org/IFoo/Echo</a:Action>";
 498                         string expected = @"<a:Action xmlns:a=""urn:foo"">http://tempuri.org/IFoo/Echo</a:Action>";
 499
 500                         XmlDocument doc = new XmlDocument ();
 501                         doc.LoadXml (input);
 502                         XmlDsigC14NTransform t = new XmlDsigC14NTransform ();
 503                         t.LoadInput (doc);
 504                         Stream s = t.GetOutput () as Stream;
 505                         Assert.AreEqual (new StreamReader (s, Encoding.UTF8).ReadToEnd (), expected);
 506                 }
 507
 508 #if NET_2_0
 509                 [Test]
 510                 public void PrefixlessNamespaceOutput ()
 511                 {
 512                         XmlDocument doc = new XmlDocument ();
 513                         doc.AppendChild (doc.CreateElement ("foo", "urn:foo"));
 514                         doc.DocumentElement.AppendChild (doc.CreateElement ("bar", "urn:bar"));
 515                         Assert.AreEqual (String.Empty, doc.DocumentElement.GetAttribute ("xmlns"), "#1");
 516                         XmlDsigC14NTransform t = new XmlDsigC14NTransform ();
 517                         t.LoadInput (doc);
 518                         Stream s = t.GetOutput () as Stream;
 519                         Assert.AreEqual (new StreamReader (s, Encoding.UTF8).ReadToEnd (), "<foo xmlns=\"urn:foo\"><bar xmlns=\"urn:bar\"></bar></foo>");
 520                         Assert.AreEqual ("urn:foo", doc.DocumentElement.GetAttribute ("xmlns"), "#2");
 521                 }
 522
 523                 [Test]
 524                 [Ignore ("find out how PropagatedNamespaces returns non-null instance on .NET")]
 525                 public void PropagatedNamespaces ()
 526                 {
 527                         XmlDocument doc = new XmlDocument ();
 528                         doc.AppendChild (doc.CreateElement ("foo", "urn:foo"));
 529                         doc.DocumentElement.AppendChild (doc.CreateElement ("bar", "urn:bar"));
 530                         Assert.AreEqual (String.Empty, doc.DocumentElement.GetAttribute ("xmlns:f"), "#1");
 531                         XmlDsigExcC14NTransform t = new XmlDsigExcC14NTransform ();
 532                         t.LoadInput (doc);
 533                         t.PropagatedNamespaces.Add ("f", "urn:foo");
 534                         t.PropagatedNamespaces.Add ("b", "urn:bar");
 535                         Stream s = t.GetOutput () as Stream;
 536                         Assert.AreEqual (new StreamReader (s, Encoding.UTF8).ReadToEnd (), "<f:foo xmlns:f=\"urn:foo\"><b:bar xmlns:b=\"urn:bar\"></b:bar></f:foo>");
 537                         Assert.AreEqual ("urn:foo", doc.DocumentElement.GetAttribute ("xmlns:f"), "#2");
 538                 }
 539
 540                 [Test]
 541                 [ExpectedException (typeof (NullReferenceException))]
 542                 public void GetDigestedOutput_Null ()
 543                 {
 544                         new XmlDsigExcC14NTransform ().GetDigestedOutput (null);
 545                 }
 546 #endif
 547         }
 548 }