feat: file_save_disk, file_delete, file_serve, upload_parse, upload_handler, thumbnail_generate (issue 0014 fase 3)

functions/infra/file_delete_test.go

@@ -0,0 +1,45 @@
+package infra
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestFileDelete(t *testing.T) {
+	t.Run("elimina archivo existente", func(t *testing.T) {
+		dir := t.TempDir()
+		path := filepath.Join(dir, "x.txt")
+		if err := os.WriteFile(path, []byte("hi"), 0o644); err != nil {
+			t.Fatalf("setup: %v", err)
+		}
+		if err := FileDelete(path); err != nil {
+			t.Fatalf("FileDelete err: %v", err)
+		}
+		if _, err := os.Stat(path); !os.IsNotExist(err) {
+			t.Errorf("archivo aun existe: %v", err)
+		}
+	})
+
+	t.Run("rechaza path con ..", func(t *testing.T) {
+		err := FileDelete("./uploads/../etc/passwd")
+		if err == nil || !strings.Contains(err.Error(), "path traversal") {
+			t.Errorf("got err %v, want path traversal", err)
+		}
+	})
+
+	t.Run("rechaza path vacio", func(t *testing.T) {
+		err := FileDelete("")
+		if err == nil {
+			t.Error("got nil, want error")
+		}
+	})
+
+	t.Run("retorna error si no existe", func(t *testing.T) {
+		err := FileDelete(filepath.Join(t.TempDir(), "nope.txt"))
+		if err == nil {
+			t.Error("got nil, want error not found")
+		}
+	})
+}