Added performance microbenchmarks

- Added "Performance" folders containing perf xunit tests to a number of highly-used libraries (determined by Usage data)
- Two sets of usage data from store apps; I added a test for every function used in more than 5% of the covered assemblies in both data sets.
- This is a first-round pass of the most highly used libraries and does not include: abstract classes, interfaces, or Attributes
- Created a static utility class for commonly used functions across perf tests, stored in src\Common\tests\Performance.
- These tests will run using ```msbuild /t:BuildAndTest /p:performance=true``` from the projects test directory
- Added conditional properties that check if v5.0 is installed on the user's computer when running perf tests. If it isn't, a detailed error is thrown with a link to a performance-test github page that I've also added.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/System.Collections.NonGeneric/tests/System.Collections.NonGeneric.Tests.csproj b/src/System.Collections.NonGeneric/tests/System.Collections.NonGeneric.Tests.csproj
index bc1b2bccc1..7ae44d2f56 100644
--- a/src/System.Collections.NonGeneric/tests/System.Collections.NonGeneric.Tests.csproj
+++ b/src/System.Collections.NonGeneric/tests/System.Collections.NonGeneric.Tests.csproj
@@ -1,4 +1,4 @@
-<?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="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
   <PropertyGroup>
@@ -9,6 +9,11 @@
     <AssemblyName>System.Collections.NonGeneric.Tests</AssemblyName>
     <ProjectGuid>{EE95AE39-845A-42D3-86D0-8065DBE56612}</ProjectGuid>
   </PropertyGroup>
+  <!-- Performance tests require v5.0 portable tools -->
+  <PropertyGroup Condition="'$(RunPerfTestsForProject)' == 'true'">
+    <TargetFrameworkVersion>v5.0</TargetFrameworkVersion>
+    <TargetFrameworkProfile />
+  </PropertyGroup>
   <!-- Default configurations to help VS understand the configurations -->
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
   </PropertyGroup>
@@ -147,6 +152,13 @@
       <Link>Common\System\Diagnostics\DebuggerAttributes.cs</Link>
     </Compile>
   </ItemGroup>
+  <!-- Performance Tests -->
+  <ItemGroup Condition="'$(RunPerfTestsForProject)' == 'true'">
+    <Compile Include="Performance\Perf.HashTable.cs" />
+    <Compile Include="$(CommonTestPath)\Performance\PerfUtils.cs">
+      <Link>Common\Performance\PerfUtils.cs</Link>
+    </Compile>
+  </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\src\System.Collections.NonGeneric.csproj">
       <Name>System.Collections.NonGeneric</Name>
@@ -156,4 +168,4 @@
     <None Include="project.json" />
   </ItemGroup>
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
-</Project>
\ No newline at end of file
+</Project>