Adding CodeGeneration benchmark

test/Microsoft.AspNetCore.Razor.Performance/CodeGenerationBenchmark.cs

@@ -0,0 +1,71 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using BenchmarkDotNet.Attributes;
+using Microsoft.AspNetCore.Mvc.Razor.Extensions;
+using Microsoft.AspNetCore.Razor.Language;
+
+namespace Microsoft.AspNetCore.Razor.Performance
+{
+    [Config(typeof(CoreConfig))]
+    public class CodeGenerationBenchmark
+    {
+        public CodeGenerationBenchmark()
+        {
+            var current = new DirectoryInfo(Environment.CurrentDirectory);
+            while  (current != null && !File.Exists(Path.Combine(current.FullName, "MSN.cshtml")))
+            {
+                current = current.Parent;
+            }
+
+            var root = current;
+
+            var engine = RazorEngine.Create(b => { RazorExtensions.Register(b); });
+
+            var project = RazorProject.Create(root.FullName);
+
+            DesignTimeTemplateEngine = new MvcRazorTemplateEngine(RazorEngine.CreateDesignTime(b => { RazorExtensions.Register(b); }), project);
+            RuntimeTemplateEngine = new MvcRazorTemplateEngine(RazorEngine.Create(b => { RazorExtensions.Register(b); }), project);
+
+            var codeDocument = RuntimeTemplateEngine.CreateCodeDocument(Path.Combine(root.FullName, "MSN.cshtml"));
+
+            Imports = codeDocument.Imports;
+            MSN = codeDocument.Source;
+        }
+
+        public RazorTemplateEngine DesignTimeTemplateEngine { get; }
+
+        public RazorTemplateEngine RuntimeTemplateEngine { get; }
+
+        public IReadOnlyList<RazorSourceDocument> Imports { get; }
+
+        public RazorSourceDocument MSN { get; }
+
+        [Benchmark(Description = "Razor Design Time Code Generation of MSN.com")]
+        public void CodeGeneration_DesignTime_LargeStaticFile()
+        {
+            var codeDocument = RazorCodeDocument.Create(MSN, Imports);
+            var generated = DesignTimeTemplateEngine.GenerateCode(codeDocument);
+
+            if (generated.Diagnostics.Count != 0)
+            {
+                throw new Exception("Error!" + Environment.NewLine + string.Join(Environment.NewLine, generated.Diagnostics));
+            }
+        }
+
+        [Benchmark(Description = "Razor Runtime Code Generation of MSN.com")]
+        public void CodeGeneration_Runtime_LargeStaticFile()
+        {
+            var codeDocument = RazorCodeDocument.Create(MSN, Imports);
+            var generated = RuntimeTemplateEngine.GenerateCode(codeDocument);
+
+            if (generated.Diagnostics.Count != 0)
+            {
+                throw new Exception("Error!" + Environment.NewLine + string.Join(Environment.NewLine, generated.Diagnostics));
+            }
+        }
+    }
+}