feat: add test coverage examples

api/user/domain/valueObjects/userEmail.go

@@ -1,7 +1,6 @@
 package userValueObjects
 
 import (
-	"go-rest-template/internal/app/utils"
 	"go-rest-template/internal/app/web"
 	"net/http"
 	"regexp"
@@ -14,7 +13,6 @@ type Email struct {
 func ValidateEmail(value string) (*Email, *web.HttpError) {
 	emailRegex := regexp.MustCompile(`^[a-z0-9._%+\-]+@[a-z0-9.\-]+\.[a-z]{2,4}$`)
 	if result := emailRegex.MatchString(value); result == false {
-		utils.Print(result)
 		return nil, &web.HttpError{
 			Code: http.StatusUnprocessableEntity,
 			Body: map[string]interface{}{

api/user/domain/valueObjects/userEmail_test.go

@@ -0,0 +1,38 @@
+package userValueObjects
+
+import (
+	"testing"
+)
+
+func TestEmptyEmail(t *testing.T) {
+	t.Parallel()
+	email, err := ValidateEmail("")
+	if email != nil {
+		t.Errorf("Expected nil, got %v", email)
+	}
+	if err == nil {
+		t.Errorf("Expected error, got nil")
+	}
+}
+
+func TestInvalidEmail(t *testing.T) {
+	t.Parallel()
+	email, err := ValidateEmail("invalidemail")
+	if email != nil {
+		t.Errorf("Expected nil, got %v", email)
+	}
+	if err == nil {
+		t.Errorf("Expected error, got nil")
+	}
+}
+
+func TestValidEmail(t *testing.T) {
+	t.Parallel()
+	email, err := ValidateEmail("validemail@gmail.com")
+	if email == nil {
+		t.Errorf("Expected email, got nil")
+	}
+	if err != nil {
+		t.Errorf("Expected nil, got %v", err)
+	}
+}