message: op-node: testlog now uses interface, to swap testing backend easily
diff: @@ -22,18 +22,24 @@ import (
  "strconv"
  "strings"
  "sync"
  - "testing"
  "github.com/ethereum/go-ethereum/log"
  )
  +// Testing interface to log to. Some functions are marked as Helper function to log the call site accurately.
  +// Standard Go testing.TB implements this, as well as Hive and other Go-like test frameworks.
  +type Testing interface {
  + Logf(format string, args ...any)
  + Helper()
  +}
  +
  // Handler returns a log handler which logs to the unit test log of t.
  -func Handler(t *testing.T, level log.Lvl) log.Handler {
  +func Handler(t Testing, level log.Lvl) log.Handler {
  return log.LvlFilterHandler(level, &handler{t, log.TerminalFormat(false)})
  }
  type handler struct {
  - t *testing.T
  + t Testing
  fmt log.Format
  }
  @@ -47,7 +53,7 @@ func (h *handler) Log(r *log.Record) error {
  // helpers, so the file and line number in unit test output correspond to the call site
  // which emitted the log message.
  type logger struct {
  - t *testing.T
  + t Testing
  l log.Logger
  mu *sync.Mutex
  h *bufHandler
  @@ -64,7 +70,7 @@ func (h *bufHandler) Log(r *log.Record) error {
  }
  // Logger returns a logger which logs to the unit test log of t.
  -func Logger(t *testing.T, level log.Lvl) log.Logger {
  +func Logger(t Testing, level log.Lvl) log.Logger {
  l := &logger{
  t: t,
  l: log.New(),
  