Refs #23432. Add blackbox tests.

Signed-off-by: Miguel Company <miguelcompany@eprosima.com>

Author: MiguelCompany

test/blackbox/CMakeLists.txt

@@ -184,6 +184,8 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/discovery_participants_initial_peers_
     ${CMAKE_CURRENT_BINARY_DIR}/discovery_participants_initial_peers_profile.xml)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/discovery_participants_client_server_profile.xml
     ${CMAKE_CURRENT_BINARY_DIR}/discovery_participants_client_server_profile.xml)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/transport_priority_profile.xml
+    ${CMAKE_CURRENT_BINARY_DIR}/transport_priority_profile.xml)
 file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/datagrams" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
 
 if(FASTDDS_PIM_API_TESTS)

test/blackbox/api/dds-pim/PubSubWriter.hpp

@@ -359,6 +359,7 @@ class PubSubWriter
 
     eprosima::fastdds::dds::DataWriter& get_native_writer() const
     {
+        EXPECT_NE(datawriter_, nullptr);
         return *datawriter_;
     }
 
@@ -1677,6 +1678,13 @@ class PubSubWriter
         return *this;
     }
 
+    PubSubWriter& transport_priority(
+            int32_t prio)
+    {
+        datawriter_qos_.transport_priority().value = prio;
+        return *this;
+    }
+
     const std::string& topic_name() const
     {
         return topic_name_;