Refs #21183: Add register_two_identical_typesupports regression test

Signed-off-by: eduponz <eduardoponz@eprosima.com>

Author: EduPonz

test/blackbox/common/DDSBlackboxTestsBasic.cpp

@@ -901,6 +901,31 @@ TEST(DDSBasic, max_output_message_size_writer)
 
 }
 
+/**
+ * @test This test checks that it is possible to register two TypeSupport instances of the same type
+ *       under the same DomainParticipant.
+ */
+TEST(DDSBasic, register_two_identical_typesupports)
+{
+    // Set DomainParticipantFactory to create disabled entities
+    DomainParticipantFactory* factory = DomainParticipantFactory::get_instance();
+    ASSERT_NE(nullptr, factory);
+
+    // Create a disabled DomainParticipant, setting it to in turn create disable entities
+    DomainParticipant* participant = factory->create_participant((uint32_t)GET_PID() % 230, PARTICIPANT_QOS_DEFAULT);
+    ASSERT_NE(nullptr, participant);
+
+    // Register a type support
+    TypeSupport type_support_1;
+    type_support_1.reset(new HelloWorldPubSubType());
+    EXPECT_EQ(RETCODE_OK, participant->register_type(type_support_1));
+
+    // Register a second instance of the type support with the same TopicDataType
+    TypeSupport type_support_2;
+    type_support_2.reset(new HelloWorldPubSubType());
+    EXPECT_EQ(RETCODE_OK, participant->register_type(type_support_2));
+}
+
 } // namespace dds
 } // namespace fastdds
 } // namespace eprosima