Chore: Fix tests (#4440)

infra/vprotogen/main.go

@@ -89,12 +89,11 @@ func whichProtoc(suffix, targetedVersion string) (string, error) {
 
 	path, err := exec.LookPath(protoc)
 	if err != nil {
-		errStr := fmt.Sprintf(`
+		return "", fmt.Errorf(`
 Command "%s" not found.
 Make sure that %s is in your system path or current path.
 Download %s v%s or later from https://github.com/protocolbuffers/protobuf/releases
 `, protoc, protoc, protoc, targetedVersion)
-		return "", fmt.Errorf(errStr)
 	}
 	return path, nil
 }

main/commands/all/convert/json.go

@@ -50,17 +50,17 @@ func executeTypedMessageToJson(cmd *base.Command, args []string) {
 
 	reader, err := confloader.LoadConfig(cmd.Flag.Arg(0))
 	if err != nil {
-		base.Fatalf(err.Error())
+		base.Fatalf("failed to load config: %s", err)
 	}
 
 	b, err := io.ReadAll(reader)
 	if err != nil {
-		base.Fatalf(err.Error())
+		base.Fatalf("failed to read config: %s", err)
 	}
 
 	tm := cserial.TypedMessage{}
 	if err = json.Unmarshal(b, &tm); err != nil {
-		base.Fatalf(err.Error())
+		base.Fatalf("failed to unmarshal config: %s", err)
 	}
 
 	if j, ok := creflect.MarshalToJson(&tm, injectTypeInfo); ok {

main/commands/all/convert/protobuf.go

@@ -53,12 +53,12 @@ func executeConvertConfigsToProtobuf(cmd *base.Command, args []string) {
 	}
 
 	if len(unnamedArgs) < 1 {
-		base.Fatalf("empty config list")
+		base.Fatalf("invalid config list length: %d", len(unnamedArgs))
 	}
 
 	pbConfig, err := core.LoadConfig("auto", unnamedArgs)
 	if err != nil {
-		base.Fatalf(err.Error())
+		base.Fatalf("failed to load config: %s", err)
 	}
 
 	if optDump {