From 2d2bdba4967741d36b4d4febcffcbe369097ea61 Mon Sep 17 00:00:00 2001
From: Richard Webb <richard.webb@helpsystems.com>
Date: Sun, 25 Feb 2024 11:24:51 +0000
Subject: [PATCH] Add a couple of benchmarks for AsOLEPropertiesContainer

---
 sources/Test/OpenMcdf.Benchmark/Extensions.cs | 41 +++++++++++++++++++
 .../OpenMcdf.Benchmark.csproj                 | 13 +++++-
 sources/Test/OpenMcdf.Benchmark/Program.cs    |  2 +-
 3 files changed, 54 insertions(+), 2 deletions(-)
 create mode 100644 sources/Test/OpenMcdf.Benchmark/Extensions.cs

diff --git a/sources/Test/OpenMcdf.Benchmark/Extensions.cs b/sources/Test/OpenMcdf.Benchmark/Extensions.cs
new file mode 100644
index 00000000..1781476f
--- /dev/null
+++ b/sources/Test/OpenMcdf.Benchmark/Extensions.cs
@@ -0,0 +1,41 @@
+using System;
+using System.IO;
+using BenchmarkDotNet.Attributes;
+using OpenMcdf.Extensions;
+
+namespace OpenMcdf.Benchmark
+{
+    // Simple benchmarks for reading OLE Properties with OpenMcdf.Extensions.
+    [SimpleJob(BenchmarkDotNet.Jobs.RuntimeMoniker.NetCoreApp31)]
+    [MemoryDiagnoser]
+    public class ExtensionsRead
+    {
+        // Keep the Storage as a member, as we're only testing the OLEProperties bits, not the underlying CompoundFile
+        private readonly CompoundFile udTestFile;
+
+        // Load the test file on creation
+        public ExtensionsRead()
+        {
+            string testFile = Path.Combine("TestFiles", "winUnicodeDictionary.doc");
+            this.udTestFile = new CompoundFile(testFile);
+        }
+
+        [GlobalCleanup]
+        public void GlobalCleanup()
+        {
+            udTestFile.Close();
+        }
+
+        [Benchmark]
+        public void TestReadSummaryInformation()
+        {
+            this.udTestFile.RootStorage.GetStream("\u0005SummaryInformation").AsOLEPropertiesContainer();
+        }
+
+        [Benchmark]
+        public void TestReadDocumentSummaryInformation()
+        {
+            this.udTestFile.RootStorage.GetStream("\u0005DocumentSummaryInformation").AsOLEPropertiesContainer();
+        }
+    }
+}
\ No newline at end of file
diff --git a/sources/Test/OpenMcdf.Benchmark/OpenMcdf.Benchmark.csproj b/sources/Test/OpenMcdf.Benchmark/OpenMcdf.Benchmark.csproj
index cd12f4e0..f20af7c3 100644
--- a/sources/Test/OpenMcdf.Benchmark/OpenMcdf.Benchmark.csproj
+++ b/sources/Test/OpenMcdf.Benchmark/OpenMcdf.Benchmark.csproj
@@ -6,11 +6,22 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.13.2" />
+    <PackageReference Include="BenchmarkDotNet" Version="0.13.12" />
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\OpenMcdf.Extensions\OpenMcdf.Extensions.csproj" />
     <ProjectReference Include="..\..\OpenMcdf\OpenMcdf.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Folder Include="TestFiles\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="..\TestFiles\winUnicodeDictionary.doc" Link="TestFiles\winUnicodeDictionary.doc">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>
diff --git a/sources/Test/OpenMcdf.Benchmark/Program.cs b/sources/Test/OpenMcdf.Benchmark/Program.cs
index f441ba1d..a6459efa 100644
--- a/sources/Test/OpenMcdf.Benchmark/Program.cs
+++ b/sources/Test/OpenMcdf.Benchmark/Program.cs
@@ -6,7 +6,7 @@ internal class Program
     {
         private static void Main(string[] args)
         {
-            var summary = BenchmarkRunner.Run<InMemory>();
+            BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
         }
     }
 }
\ No newline at end of file