diff --git a/internal/gateway/utils/utils_test.go b/internal/gateway/utils/utils_test.go
new file mode 100644
index 0000000..343d483
--- /dev/null
+++ b/internal/gateway/utils/utils_test.go
@@ -0,0 +1,58 @@
+package utils
+
+import (
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"kudago/internal/models"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGenerateFilename(t *testing.T) {
+	t.Run("Valid filename generation", func(t *testing.T) {
+		header := &multipart.FileHeader{
+			Filename: "test_image.jpg",
+		}
+
+		err := GenerateFilename(header)
+
+		assert.NoError(t, err)
+		assert.Contains(t, header.Filename, "_")
+
+		assert.Equal(t, "jpg", getFileExtension(header.Filename))
+	})
+
+	t.Run("Invalid image format", func(t *testing.T) {
+		header := &multipart.FileHeader{
+			Filename: "test_document.pdf",
+		}
+
+		err := GenerateFilename(header)
+
+		assert.Error(t, err)
+		assert.Equal(t, models.ErrInvalidImageFormat, err)
+	})
+}
+
+func TestGetPaginationParams(t *testing.T) {
+	t.Run("Default pagination params", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/items?page=0&limit=30", nil)
+
+		params := GetPaginationParams(req)
+
+		assert.Equal(t, 0, params.Offset)
+		assert.Equal(t, 30, params.Limit)
+	})
+
+	t.Run("Custom pagination params", func(t *testing.T) {
+		req := httptest.NewRequest(http.MethodGet, "/items?page=1&limit=10", nil)
+
+		params := GetPaginationParams(req)
+
+		assert.Equal(t, 10, params.Offset)
+		assert.Equal(t, 10, params.Limit)
+	})
+}