Harden host deletion and test stability

internal/testutil/sqlite.go

@@ -0,0 +1,42 @@
+package testutil
+
+import (
+	"context"
+	"fmt"
+	"path/filepath"
+	"sync"
+	"testing"
+
+	"sub2api-cn-relay-manager/internal/store/sqlite"
+)
+
+var sqliteOpenMu sync.Mutex
+
+func SQLiteTestDSN(t testing.TB, fileName string, disableForeignKeys bool) string {
+	t.Helper()
+
+	dsn := fmt.Sprintf("file:%s?_busy_timeout=5000", filepath.ToSlash(filepath.Join(t.TempDir(), fileName)))
+	if disableForeignKeys {
+		dsn += "&_pragma=foreign_keys(0)"
+	}
+	return dsn
+}
+
+func OpenSQLiteStore(t testing.TB, dsn string) *sqlite.DB {
+	t.Helper()
+
+	sqliteOpenMu.Lock()
+	store, err := sqlite.Open(context.Background(), dsn)
+	sqliteOpenMu.Unlock()
+	if err != nil {
+		t.Fatalf("sqlite.Open() error = %v", err)
+	}
+	return store
+}
+
+func CloseSQLiteStore(t testing.TB, store *sqlite.DB) {
+	t.Helper()
+	if err := store.Close(); err != nil {
+		t.Fatalf("store.Close() error = %v", err)
+	}
+}