test(slog/pretty): add a couple simple comparison benchmarks

Author: joshuasing

.gitignore

@@ -1,2 +1,6 @@
+### Go
+coverage.out
+
+### JetBrains
 .idea/
 *.iml

slog/pretty/buffer_test.go

@@ -9,7 +9,6 @@ import (
 
 func BenchmarkBufferPool(b *testing.B) {
 	pool := newBufferPool()
-	b.ReportAllocs()
 	b.ResetTimer()
 
 	b.RunParallel(func(pb *testing.PB) {
@@ -24,6 +23,7 @@ func BenchmarkBuffer_Write(b *testing.B) {
 	buf := newBuffer()
 	in := []byte("Hello, world!")
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		_, _ = buf.Write(in)
 	}
@@ -33,6 +33,7 @@ func BenchmarkBuffer_WriteString(b *testing.B) {
 	buf := newBuffer()
 	in := "Hello, world!"
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		_, _ = buf.WriteString(in)
 	}
@@ -42,6 +43,7 @@ func BenchmarkBuffer_WriteTo(b *testing.B) {
 	buf := newBuffer()
 	_, _ = buf.WriteString(strings.Repeat("a", 1024))
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		_, _ = buf.WriteTo(io.Discard)
 	}
@@ -51,6 +53,7 @@ func BenchmarkBuffer_AppendByte(b *testing.B) {
 	buf := newBuffer()
 	in := byte('\n')
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendByte(in)
 	}
@@ -60,6 +63,7 @@ func BenchmarkBuffer_AppendBytes(b *testing.B) {
 	buf := newBuffer()
 	in := []byte("Hello, world!")
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendBytes(in)
 	}
@@ -69,6 +73,7 @@ func BenchmarkBuffer_AppendString(b *testing.B) {
 	buf := newBuffer()
 	in := "Hello, world!"
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendString(in)
 	}
@@ -78,6 +83,7 @@ func BenchmarkBuffer_AppendInt(b *testing.B) {
 	buf := newBuffer()
 	in := int64(42)
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendInt(in)
 	}
@@ -87,6 +93,7 @@ func BenchmarkBuffer_AppendUint(b *testing.B) {
 	buf := newBuffer()
 	in := uint64(73)
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendUint(in)
 	}
@@ -96,6 +103,7 @@ func BenchmarkBuffer_AppendFloat32(b *testing.B) {
 	buf := newBuffer()
 	in := float32(3.14)
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendFloat32(in)
 	}
@@ -105,6 +113,7 @@ func BenchmarkBuffer_AppendFloat64(b *testing.B) {
 	buf := newBuffer()
 	in := 3.14159265
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendFloat64(in)
 	}
@@ -113,6 +122,7 @@ func BenchmarkBuffer_AppendFloat64(b *testing.B) {
 func BenchmarkBuffer_AppendBool(b *testing.B) {
 	buf := newBuffer()
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendBool(true)
 	}
@@ -123,6 +133,7 @@ func BenchmarkBuffer_AppendTimeFormat(b *testing.B) {
 	t := time.Now()
 	layout := time.RFC3339
 	b.ResetTimer()
+
 	for i := 0; i < b.N; i++ {
 		buf.AppendTimeFormat(t, layout)
 	}

slog/pretty/handler_test.go

@@ -3,6 +3,7 @@ package pretty
 import (
 	"bytes"
 	"fmt"
+	"io"
 	"log/slog"
 	"regexp"
 	"strconv"
@@ -40,6 +41,54 @@ func TestHandler(t *testing.T) {
 	slogtest.Run(t, newHandler, result)
 }
 
+func BenchmarkDefaultTextHandler(b *testing.B) {
+	l := slog.New(slog.NewTextHandler(io.Discard, nil))
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			l.Info("Hello, world!")
+		}
+	})
+}
+
+func BenchmarkDefaultJSONHandler(b *testing.B) {
+	l := slog.New(slog.NewJSONHandler(io.Discard, nil))
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			l.Info("Hello, world!")
+		}
+	})
+}
+
+func BenchmarkHandlerWithoutSource(b *testing.B) {
+	l := slog.New(NewHandler(io.Discard, &Options{
+		AddSource: false,
+	}))
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			l.Info("Hello, world!")
+		}
+	})
+}
+
+func BenchmarkHandlerWithSource(b *testing.B) {
+	l := slog.New(NewHandler(io.Discard, &Options{
+		AddSource: true,
+	}))
+	b.ResetTimer()
+
+	b.RunParallel(func(pb *testing.PB) {
+		for pb.Next() {
+			l.Info("Hello, world!")
+		}
+	})
+}
+
 func parse(b []byte) (map[string]any, error) {
 	m := make(map[string]any)
 	s := string(bytes.TrimSpace(b))