Add benchmark for building docs site

main_test.go

@@ -0,0 +1,35 @@
+// Copyright 2020 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"testing"
+
+	"github.com/gohugoio/hugo/commands"
+)
+
+func BenchmarkDocsSite(b *testing.B) {
+	flags := []string{
+		"--quiet",
+		"--source=docs",
+		"--renderToMemory",
+	}
+
+	for i := 0; i < b.N; i++ {
+		r := commands.Execute(flags)
+		if r.Err != nil {
+			b.Fatal(r.Err)
+		}
+	}
+}