优化结构

internal/integration/storage/local_test.go

@@ -0,0 +1,24 @@
+package storage
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestLocalDeletePrefixRejectsEmptyPrefix(t *testing.T) {
+	root := t.TempDir()
+	sentinel := filepath.Join(root, "keep.txt")
+	if err := os.WriteFile(sentinel, []byte("keep"), 0o600); err != nil {
+		t.Fatalf("write sentinel: %v", err)
+	}
+	storage := &fileStorage{root: root, urlPrefix: "/files"}
+
+	if err := storage.DeletePrefix(context.Background(), " /"); err == nil {
+		t.Fatal("DeletePrefix() accepted an empty prefix")
+	}
+	if _, err := os.Stat(sentinel); err != nil {
+		t.Fatalf("sentinel was removed: %v", err)
+	}
+}