Allow logger creation from an existing standard logger

logger.go

@@ -19,6 +19,10 @@ func NewLogger(output io.Writer, prefix string, flag int) Logger {
 	return &logger{l: log.New(output, prefix, flag)}
 }
 
+func NewStandardLogger(l *log.Logger) Logger {
+	return &logger{l: l}
+}
+
 func createDefaultLogger() Logger {
 	return NewLogger(os.Stdout, "", log.Ldate|log.Lmicroseconds)
 }

logger_test.go

@@ -2,9 +2,10 @@ package req
 
 import (
 	"bytes"
-	"github.com/imroc/req/v3/internal/tests"
 	"log"
 	"testing"
+
+	"github.com/imroc/req/v3/internal/tests"
 )
 
 func TestLogger(t *testing.T) {
@@ -17,3 +18,14 @@ func TestLogger(t *testing.T) {
 	c.R().SetOutput(nil)
 	tests.AssertContains(t, buf.String(), "warn", true)
 }
+
+func TestStandardLogger(t *testing.T) {
+	buf := new(bytes.Buffer)
+	l := NewStandardLogger(log.New(buf, "", log.Ldate|log.Lmicroseconds))
+	c := tc().SetLogger(l)
+	c.SetProxyURL(":=\\<>ksfj&*&sf")
+	tests.AssertContains(t, buf.String(), "error", true)
+	buf.Reset()
+	c.R().SetOutput(nil)
+	tests.AssertContains(t, buf.String(), "warn", true)
+}