feat: writer test full coverage

internal/io/writer.go

@@ -2,6 +2,7 @@ package io
 
 import (
 	"fmt"
+	"log"
 	"os"
 
 	"gitlab.com/urkob/go-cert-gen/pkg/io"
@@ -17,18 +18,19 @@ func (w writer) WriteFile(filename string, data []byte) (string, error) {
 	if filename == "" {
 		return "", fmt.Errorf("filename cannot be empty")
 	}
-
 	if w.dirPath == "" {
 		return "", fmt.Errorf("export directory cannot be empty")
 	}
-
 	if err := os.MkdirAll(w.dirPath, 0o755); err != nil {
 		return "", err
 	}
+
+	log.Println("to write file")
 	outputPath := w.dirPath + "/" + filename
 	if err := os.WriteFile(outputPath, data, 0o600); err != nil {
 		return "", err
 	}
+	log.Println("file written")
 	return outputPath, nil
 }