blob: dc77bd6a1e643e9d86d52eb6e28da44d8517cbdb [file] [log] [blame]
package log_test
import (
"context"
stdlog "log"
"strings"
"testing"
tellog "golang.org/x/tools/internal/telemetry/log"
"golang.org/x/tools/internal/telemetry/tag"
)
func init() {
stdlog.SetOutput(new(noopWriter))
}
type noopWriter int
func (nw *noopWriter) Write(b []byte) (int, error) {
return len(b), nil
}
func A(a int) int {
if a > 0 {
_ = 10 * 12
}
return B("Called from A")
}
func B(b string) int {
b = strings.ToUpper(b)
if len(b) > 1024 {
b = strings.ToLower(b)
}
return len(b)
}
func A_log(ctx context.Context, a int) int {
if a > 0 {
tellog.Print(ctx, "a > 0", tag.Of("a", a))
_ = 10 * 12
}
tellog.Print(ctx, "calling b")
return B_log(ctx, "Called from A")
}
func B_log(ctx context.Context, b string) int {
b = strings.ToUpper(b)
tellog.Print(ctx, "b uppercased, so lowercased", tag.Of("len_b", len(b)))
if len(b) > 1024 {
b = strings.ToLower(b)
tellog.Print(ctx, "b > 1024, so lowercased", tag.Of("b", b))
}
return len(b)
}
func A_log_stdlib(a int) int {
if a > 0 {
stdlog.Printf("a > 0 where a=%d", a)
_ = 10 * 12
}
stdlog.Print("calling b")
return B_log_stdlib("Called from A")
}
func B_log_stdlib(b string) int {
b = strings.ToUpper(b)
stdlog.Printf("b uppercased, so lowercased where len_b=%d", len(b))
if len(b) > 1024 {
b = strings.ToLower(b)
stdlog.Printf("b > 1024, so lowercased where b=%s", b)
}
return len(b)
}
func BenchmarkNoTracingNoMetricsNoLogging(b *testing.B) {
b.ReportAllocs()
values := []int{0, 10, 20, 100, 1000}
for i := 0; i < b.N; i++ {
for _, value := range values {
if g := A(value); g <= 0 {
b.Fatalf("Unexpected got g(%d) <= 0", g)
}
}
}
}
func BenchmarkLoggingNoExporter(b *testing.B) {
b.ReportAllocs()
values := []int{0, 10, 20, 100, 1000}
for i := 0; i < b.N; i++ {
for _, value := range values {
if g := A_log(context.TODO(), value); g <= 0 {
b.Fatalf("Unexpected got g(%d) <= 0", g)
}
}
}
}
func BenchmarkLoggingStdlib(b *testing.B) {
b.ReportAllocs()
values := []int{0, 10, 20, 100, 1000}
for i := 0; i < b.N; i++ {
for _, value := range values {
if g := A_log_stdlib(value); g <= 0 {
b.Fatalf("Unexpected got g(%d) <= 0", g)
}
}
}
}