Merge commit 'ad273dbe5dba7bd0e901270464e25fc1f030a5b5' as 'backend/goldmark'

backend/goldmark/_benchmark/go/benchmark_test.go

@@ -0,0 +1,95 @@
+package benchmark
+
+import (
+	"bytes"
+	"io/ioutil"
+	"testing"
+
+	gomarkdown "github.com/gomarkdown/markdown"
+	"github.com/yuin/goldmark"
+	"github.com/yuin/goldmark/renderer/html"
+	"github.com/yuin/goldmark/util"
+	"gitlab.com/golang-commonmark/markdown"
+
+	"github.com/russross/blackfriday/v2"
+
+	"github.com/88250/lute"
+)
+
+func BenchmarkMarkdown(b *testing.B) {
+	b.Run("Blackfriday-v2", func(b *testing.B) {
+		r := func(src []byte) ([]byte, error) {
+			out := blackfriday.Run(src)
+			return out, nil
+		}
+		doBenchmark(b, r)
+	})
+
+	b.Run("GoldMark", func(b *testing.B) {
+		markdown := goldmark.New(
+			goldmark.WithRendererOptions(html.WithXHTML(), html.WithUnsafe()),
+		)
+		r := func(src []byte) ([]byte, error) {
+			var out bytes.Buffer
+			err := markdown.Convert(src, &out)
+			return out.Bytes(), err
+		}
+		doBenchmark(b, r)
+	})
+
+	b.Run("CommonMark", func(b *testing.B) {
+		md := markdown.New(markdown.XHTMLOutput(true))
+		r := func(src []byte) ([]byte, error) {
+			var out bytes.Buffer
+			err := md.Render(&out, src)
+			return out.Bytes(), err
+		}
+		doBenchmark(b, r)
+	})
+
+	b.Run("Lute", func(b *testing.B) {
+		luteEngine := lute.New()
+		luteEngine.SetGFMAutoLink(false)
+		luteEngine.SetGFMStrikethrough(false)
+		luteEngine.SetGFMTable(false)
+		luteEngine.SetGFMTaskListItem(false)
+		luteEngine.SetCodeSyntaxHighlight(false)
+		luteEngine.SetSoftBreak2HardBreak(false)
+		luteEngine.SetAutoSpace(false)
+		luteEngine.SetFixTermTypo(false)
+		r := func(src []byte) ([]byte, error) {
+			out := luteEngine.MarkdownStr("Benchmark", util.BytesToReadOnlyString(src))
+			return util.StringToReadOnlyBytes(out), nil
+		}
+		doBenchmark(b, r)
+	})
+
+	b.Run("GoMarkdown", func(b *testing.B) {
+		r := func(src []byte) ([]byte, error) {
+			out := gomarkdown.ToHTML(src, nil, nil)
+			return out, nil
+		}
+		doBenchmark(b, r)
+	})
+
+}
+
+// The different frameworks have different APIs. Create an adapter that
+// should behave the same in the memory department.
+func doBenchmark(b *testing.B, render func(src []byte) ([]byte, error)) {
+	b.StopTimer()
+	source, err := ioutil.ReadFile("_data.md")
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		out, err := render(source)
+		if err != nil {
+			b.Fatal(err)
+		}
+		if len(out) < 100 {
+			b.Fatal("No result")
+		}
+	}
+}