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diff --git a/wsrep-lib/test/test_utils.hpp b/wsrep-lib/test/test_utils.hpp
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+/*
+ * Copyright (C) 2018 Codership Oy <info@codership.com>
+ *
+ * This file is part of wsrep-lib.
+ *
+ * Wsrep-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Wsrep-lib is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wsrep-lib.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+// Forward declarations
+namespace wsrep
+{
+    class client_state;
+    class mock_server_state;
+}
+
+#include "wsrep/transaction.hpp"
+#include "wsrep/provider.hpp"
+
+//
+// Utility functions
+//
+namespace wsrep_test
+{
+
+    // Simple BF abort method to BF abort unordered transasctions
+    void bf_abort_unordered(wsrep::client_state& cc);
+
+    // Simple BF abort method to BF abort unordered transasctions
+    void bf_abort_ordered(wsrep::client_state& cc);
+
+    // BF abort method to abort transactions via provider
+    void bf_abort_provider(wsrep::mock_server_state& sc,
+                           const wsrep::transaction& tc,
+                           wsrep::seqno bf_seqno);
+
+    // BF abort in total order
+    void bf_abort_in_total_order(wsrep::client_state&);
+
+    // Terminate streaming applier by applying rollback fragment.
+    void terminate_streaming_applier(
+        wsrep::mock_server_state& sc,
+        const wsrep::id& server_id,
+        wsrep::transaction_id transaction_id);
+}