Avoid adding test flags when using the null logger

pkg/runtime/log/log.go

@@ -6,7 +6,6 @@ import (
 	"log"
 
 	"github.com/go-logr/logr"
-	tlogr "github.com/go-logr/logr/testing"
 	"github.com/go-logr/zapr"
 	"go.uber.org/zap"
 )
@@ -45,7 +44,7 @@ func SetLogger(l logr.Logger) {
 // to another logr.Logger.  You *must* call SetLogger to
 // get any actual logging.
 var Log = &DelegatingLogger{
-	Logger:  tlogr.NullLogger{},
+	Logger:  NullLogger{},
 	promise: &loggerPromise{},
 }
 

pkg/runtime/log/null.go

@@ -0,0 +1,44 @@
+package log
+
+import (
+	"github.com/go-logr/logr"
+)
+
+// NB: this is the same as the null logger logr/testing,
+// but avoids accidentally adding the testing flags to
+// all binaries.
+
+// NullLogger is a logr.Logger that does nothing.
+type NullLogger struct{}
+
+var _ logr.Logger = NullLogger{}
+
+// Info implements logr.InfoLogger
+func (NullLogger) Info(_ string, _ ...interface{}) {
+	// Do nothing.
+}
+
+// Enabled implements logr.InfoLogger
+func (NullLogger) Enabled() bool {
+	return false
+}
+
+// Error implements logr.Logger
+func (NullLogger) Error(_ error, _ string, _ ...interface{}) {
+	// Do nothing.
+}
+
+// V implements logr.Logger
+func (log NullLogger) V(_ int) logr.InfoLogger {
+	return log
+}
+
+// WithName implements logr.Logger
+func (log NullLogger) WithName(_ string) logr.Logger {
+	return log
+}
+
+// WithValues implements logr.Logger
+func (log NullLogger) WithValues(_ ...interface{}) logr.Logger {
+	return log
+}