[benchmarkdotnet] working

.gitignore

@@ -15,3 +15,4 @@ packages/*
 *.sln.ide
 project.lock.json
 paket-files/
+BenchmarkDotNet.Artifacts/

Expecto.BenchmarkDotNet/Expecto.BenchmarkDotNet.fs

@@ -19,6 +19,10 @@ open Expecto.Logging.Message
 module BenchmarkDotNet =
   let logger = Log.create "Expecto.BenchmarkDotNet"
 
+  type BenchmarkAttribute = BenchmarkDotNet.Attributes.BenchmarkAttribute
+  type CleanupAttribute = BenchmarkDotNet.Attributes.CleanupAttribute
+  type SetupAttribute = BenchmarkDotNet.Attributes.SetupAttribute
+
   type BenchmarkConfig =
     { columns : IColumn list
       exporters : IExporter list

Expecto.Tests/BenchmarkDotNet.fs

@@ -0,0 +1,25 @@
+module Expecto.BenchmarkDotNetTests
+
+open System
+open System.Security.Cryptography
+open Expecto
+open BenchmarkDotNet
+
+type Md5VsSha256() =
+  [<Literal>]
+  let N = 10000
+  let data : byte[] = Array.zeroCreate N
+  let sha256 = SHA256.Create()
+  let md5 = MD5.Create()
+  do Random(42).NextBytes data
+
+  [<Benchmark>]
+  member x.Sha256() = sha256.ComputeHash data
+  [<Benchmark>]
+  member x.Md5() = md5.ComputeHash(data)
+
+[<Tests>]
+let benchmarks =
+  testList "some different benchmarks" [
+    benchmark<Md5VsSha256> "md5 versus sha256" benchmarkConfig ignore
+  ]