78     REQUIRE_MESSAGE(nh.empty(), "Node handle: node_type object is not empty after default ctor");  in test_node_handle()
85 …REQUIRE_MESSAGE(!nh.empty(), "Node handle: node_type object is empty after valid move assignment");  in test_node_handle()
92     REQUIRE_MESSAGE(nh.empty(), "Node handle: moved-from node_type object is not empty");  in test_node_handle()
93 …REQUIRE_MESSAGE(!nh2.empty(), "Node handle: node_type object is empty after valid move constructio…  in test_node_handle()
114     REQUIRE_MESSAGE(!nh2.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
115     REQUIRE_MESSAGE(!nh3.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
123     REQUIRE_MESSAGE(!nh2.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
124     REQUIRE_MESSAGE(!nh3.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
132     REQUIRE_MESSAGE(nh3.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
137     REQUIRE_MESSAGE(empty_node.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
142     REQUIRE_MESSAGE(nh3.empty(), "Node handle: Wrong node handle swap behavior");  in test_node_handle()
218     REQUIRE_MESSAGE(nh.empty(), "Insert: Not empty node handle after successful insertion");  in test_insert_overloads()
228         REQUIRE_MESSAGE(nh.empty(), "Insert: Failed insertion to multitable");  in test_insert_overloads()
230         REQUIRE_MESSAGE(!nh.empty(), "Insert: Empty node handle after failed insertion");  in test_insert_overloads()
238     REQUIRE_MESSAGE(!table.empty(), "Insert: container should contains 1 or more elements");  in test_insert()
251 …REQUIRE_MESSAGE(nh.empty(), "Extract: node handle is not empty after extraction of key which is no…  in test_extract()
259     REQUIRE_MESSAGE(!nh.empty(), "Extract: node handle is empty after successful extraction");  in test_extract()
269     REQUIRE_MESSAGE(!nh.empty(), "Extract: node handle is empty after successful extraction");  in test_extract()
368         REQUIRE_MESSAGE(src_tables[i].empty(), "Merge: Some elements were not merged");  in check_concurrent_merge()
402 …REQUIRE_MESSAGE((dst_table.empty() && start_data.empty()), "Merge: Some elements were not merged");  in check_concurrent_merge()