Prevent disabled metadata reader tests from issuing build warnings.

One of the disabled tests was obsolete. The design decision that was pending
is closed and the behavior tested did not match the decision. That test is
simply deleted.

The other test is changed from using [Fact(Skip="...")] to /*[Fact]*/. It is
now tracked by Issue #26.

Finally, I spotted a typo: 'overload' instead of 'overlong' nearby and fixed it.

src/System.Reflection.Metadata/tests/Metadata/HandleCollectionTests.cs

@@ -1,21 +0,0 @@
-// Copyright (c) Microsoft. All rights reserved.
-// Licensed under the MIT license. See LICENSE file in the project root for full license information.
-
-using Xunit;
-
-namespace System.Reflection.Metadata.Tests.Metadata
-{
-    public class HandleCollectionTests
-    {
-        [Fact(Skip = "subject to design change")]
-        public void CollectionsCreatedFromDefaultDefinitionsThrow()
-        {
-            Assert.Throws<InvalidOperationException>(() => default(MethodDefinition).GetCustomAttributes());
-            Assert.Throws<InvalidOperationException>(() => default(TypeDefinition).GetMethods());
-            Assert.Throws<InvalidOperationException>(() => default(TypeDefinition).GetFields());
-            Assert.Throws<InvalidOperationException>(() => default(TypeDefinition).GetProperties());
-            Assert.Throws<InvalidOperationException>(() => default(TypeDefinition).GetEvents());
-            Assert.Throws<InvalidOperationException>(() => default(AssemblyDefinition).GetDeclarativeSecurityAttributes());
-        }
-    }
-}

src/System.Reflection.Metadata/tests/System.Reflection.Metadata.Tests.csproj

@@ -1,12 +1,10 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
-  
   <PropertyGroup>
     <!-- Work around known Dev14 bug - see
          https://connect.microsoft.com/VisualStudio/feedback/details/1000796/connect-file-uap-props-not-found-cant-build-a-portable-lib-on-vs14
-    --> 
-
+    -->
     <_WindowsKitBinPath>C:\Program Files (x86)\Windows Kits\8.1\bin\x86</_WindowsKitBinPath>
     <_WindowsPhoneKitBinPath>C:\Program Files (x86)\Windows Phone Kits\8.1\bin</_WindowsPhoneKitBinPath>
     <MakePriExeFullPath>$(_WindowsKitBinPath)\makepri.exe</MakePriExeFullPath>
@@ -15,7 +13,6 @@
     <MakePriExtensionPath>$(_WindowsPhoneKitBinPath)\x86\MrmEnvironmentExtDl.dll</MakePriExtensionPath>
     <MakePriExtensionPath_x64>$(_WindowsPhoneKitBinPath)\x64\MrmEnvironmentExtDl.dll</MakePriExtensionPath_x64>
   </PropertyGroup>
-  
   <PropertyGroup>
     <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
     <Platform Condition="'$(Platform)' == ''">AnyCPU</Platform>
@@ -72,7 +69,6 @@
     <Compile Include="Metadata\ClassLayoutRow.cs" />
     <Compile Include="Metadata\Ecma335\MetadataAggregatorTests.cs" />
     <Compile Include="Metadata\Ecma335\MetadataTokensTests.cs" />
-    <Compile Include="Metadata\HandleCollectionTests.cs" />
     <Compile Include="Metadata\HandleComparerTests.cs" />
     <Compile Include="Metadata\HandleTests.cs" />
     <Compile Include="Metadata\MetadataReaderTestHelpers.cs" />

src/System.Reflection.Metadata/tests/Utilities/MemoryBlockTests.cs

@@ -234,8 +234,9 @@ namespace System.Reflection.Metadata.Tests
             }
         }
 
-        // Add more test cases when fixing this.
-        [Fact(Skip = "TODO: MetadataStringComparer needs to use the user-supplied encoding.")]
+        // TODO: Issue #26: MetadataStringComparer needs to use the user-supplied encoding.
+        //       Add more test cases when fixing this and re-enabling the test.
+        /*[Fact]*/
         public unsafe void ComparisonToInvalidByteSequenceMatchesFallback()
         {
             // dangling lead byte
@@ -248,7 +249,7 @@ namespace System.Reflection.Metadata.Tests
                 Assert.False(new MemoryBlock(ptr, buffer.Length).Utf8NullTerminatedEquals(0, Encoding.UTF8.GetString(buffer)));
             }
 
-            // overload encoding
+            // overlong encoding
             fixed (byte* ptr = (buffer = new byte[] { (byte)'a', 0xC0, 0xAF, (byte)'b', 0x0 }))
             {
                 var block = new MemoryBlock(ptr, buffer.Length);