Add canonicalization test (#19693)

* One more test for canonicalization feature

* Remove test code about System.IdentityModel.CanonicalizationDriver.

Author: imcarolwang

src/System.Runtime.Serialization.Xml/tests/Canonicalization/Canonicalization.Tests.csproj

@@ -3,6 +3,7 @@
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
   <PropertyGroup>
     <ProjectGuid>{D3AD82FC-051D-4121-8E48-B13CE8024776}</ProjectGuid>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netcoreapp-Debug|AnyCPU'" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netcoreapp-Release|AnyCPU'" />
@@ -19,6 +20,15 @@
     <Compile Include="$(CommonTestPath)\System\IO\TempFile.cs">
       <Link>Common\System\IO\TempFile.cs</Link>
     </Compile>
+    <Compile Include="CryptoCanonicalization\AncestralNamespaceContextProviderProxy.cs" />
+    <Compile Include="CryptoCanonicalization\CanonicalEncoder.cs" />
+    <Compile Include="CryptoCanonicalization\CanonicalWriter.cs" />
+    <Compile Include="CryptoCanonicalization\Engine.cs" />
+    <Compile Include="CryptoCanonicalization\ExclusiveCanonicalNamespaceManager.cs" />
+    <Compile Include="CryptoCanonicalization\Pool.cs" />
+    <Compile Include="CryptoCanonicalization\SimpleXmlNodeList.cs" />
+    <Compile Include="CryptoCanonicalization\XmlBuffer.cs" />
+    <Compile Include="CryptoCanonicalization\XPathHelper.cs" />
   </ItemGroup>
   <ItemGroup>
     <Content Include="$(TestSourceFolder)baselines\ReaderWriter_C14N_BaselineXML.xml">
@@ -39,6 +49,33 @@
     <Content Include="$(TestSourceFolder)TestsConfig.xml">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>
+    <Content Include="baselines\AttrNorm.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\AttrSort.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\Boundary.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\CharEntities.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\ExcC14nSpecExample1.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\ExcC14nSpecExample2.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\InclusiveImport.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\LineFeedNorm.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="baselines\SoapMessage1.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
   </ItemGroup>
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
 </Project>

src/System.Runtime.Serialization.Xml/tests/Canonicalization/CryptoCanonicalization/AncestralNamespaceContextProviderProxy.cs

@@ -0,0 +1,43 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Xml;
+
+namespace System.Runtime.Serialization.Xml.Canonicalization.Tests
+{
+    internal interface IAncestralNamespaceContextProvider
+    {
+        string CurrentNodeName { get; }
+
+        string LookupNamespace(string prefix);
+    }
+
+    public static class AncestralNamespaceContextProviderProxy
+    {
+        public static object CreateContextProvider(XmlReader reader)
+        {
+            return new ReaderAncestralNamespaceContextProvider(reader);
+        }
+
+        private sealed class ReaderAncestralNamespaceContextProvider : IAncestralNamespaceContextProvider
+        {
+            private XmlReader _reader;
+
+            public ReaderAncestralNamespaceContextProvider(XmlReader reader)
+            {
+                _reader = reader;
+            }
+
+            public string CurrentNodeName
+            {
+                get { return _reader.Name; }
+            }
+
+            public string LookupNamespace(string prefix)
+            {
+                return _reader.LookupNamespace(prefix);
+            }
+        }
+    }
+}