chore: add more tests for logx/logc (#4603)

core/logc/logs.go

@@ -37,16 +37,18 @@ func Debugf(ctx context.Context, format string, v ...interface{}) {
 	getLogger(ctx).Debugf(format, v...)
 }
 
+// Debugfn writes fn result into access log.
+// This is useful when the function is expensive to compute,
+// and we want to log it only when necessary.
+func Debugfn(ctx context.Context, fn func() any) {
+	getLogger(ctx).Debugfn(fn)
+}
+
 // Debugv writes v into access log with json content.
 func Debugv(ctx context.Context, v interface{}) {
 	getLogger(ctx).Debugv(v)
 }
 
-// Debugfn writes fn result into access log.
-func Debugfn(ctx context.Context, fn func() string) {
-	getLogger(ctx).Debugfn(fn)
-}
-
 // Debugw writes msg along with fields into the access log.
 func Debugw(ctx context.Context, msg string, fields ...LogField) {
 	getLogger(ctx).Debugw(msg, fields...)
@@ -62,6 +64,13 @@ func Errorf(ctx context.Context, format string, v ...any) {
 	getLogger(ctx).Errorf(fmt.Errorf(format, v...).Error())
 }
 
+// Errorfn writes fn result into error log.
+// This is useful when the function is expensive to compute,
+// and we want to log it only when necessary.
+func Errorfn(ctx context.Context, fn func() any) {
+	getLogger(ctx).Errorfn(fn)
+}
+
 // Errorv writes v into error log with json content.
 // No call stack attached, because not elegant to pack the messages.
 func Errorv(ctx context.Context, v any) {
@@ -88,16 +97,18 @@ func Infof(ctx context.Context, format string, v ...any) {
 	getLogger(ctx).Infof(format, v...)
 }
 
+// Infofn writes fn result into access log.
+// This is useful when the function is expensive to compute,
+// and we want to log it only when necessary.
+func Infofn(ctx context.Context, fn func() any) {
+	getLogger(ctx).Infofn(fn)
+}
+
 // Infov writes v into access log with json content.
 func Infov(ctx context.Context, v any) {
 	getLogger(ctx).Infov(v)
 }
 
-// Infofn writes fn result into access log.
-func Infofn(ctx context.Context, fn func() string) {
-	getLogger(ctx).Infofn(fn)
-}
-
 // Infow writes msg along with fields into the access log.
 func Infow(ctx context.Context, msg string, fields ...LogField) {
 	getLogger(ctx).Infow(msg, fields...)
@@ -137,6 +148,13 @@ func Slowf(ctx context.Context, format string, v ...any) {
 	getLogger(ctx).Slowf(format, v...)
 }
 
+// Slowfn writes fn result into slow log.
+// This is useful when the function is expensive to compute,
+// and we want to log it only when necessary.
+func Slowfn(ctx context.Context, fn func() any) {
+	getLogger(ctx).Slowfn(fn)
+}
+
 // Slowv writes v into slow log with json content.
 func Slowv(ctx context.Context, v any) {
 	getLogger(ctx).Slowv(v)