From 01bf69f058c82f210ff0140d74d9558c06db42dd Mon Sep 17 00:00:00 2001
From: Eugenio Collado <eugeniocollado@eprosima.com>
Date: Mon, 9 Dec 2024 16:24:32 +0100
Subject: [PATCH] Test RTPSParticipant creation fails if SHM MaxMessageSize is
 lower than minimum

Signed-off-by: Eugenio Collado <eugeniocollado@eprosima.com>
---
 test/unittest/CMakeLists.txt                  |  1 +
 test/unittest/rtps/participant/CMakeLists.txt | 29 ++++++++
 .../rtps/participant/ParticipantTests.cpp     | 69 +++++++++++++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 test/unittest/rtps/participant/CMakeLists.txt
 create mode 100644 test/unittest/rtps/participant/ParticipantTests.cpp

diff --git a/test/unittest/CMakeLists.txt b/test/unittest/CMakeLists.txt
index 743d7d4adce..a5af4a6be02 100644
--- a/test/unittest/CMakeLists.txt
+++ b/test/unittest/CMakeLists.txt
@@ -39,6 +39,7 @@ if(NOT QNX)
 endif()
 add_subdirectory(rtps/history)
 add_subdirectory(rtps/network)
+add_subdirectory(rtps/participant)
 add_subdirectory(rtps/persistence)
 add_subdirectory(rtps/reader)
 add_subdirectory(rtps/resources/timedevent)
diff --git a/test/unittest/rtps/participant/CMakeLists.txt b/test/unittest/rtps/participant/CMakeLists.txt
new file mode 100644
index 00000000000..75068c6fa27
--- /dev/null
+++ b/test/unittest/rtps/participant/CMakeLists.txt
@@ -0,0 +1,29 @@
+# Copyright 2018 Proyectos y Sistemas de Mantenimiento SL (eProsima).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set(PARTICIPANTTESTS_SOURCE ParticipantTests.cpp)
+
+add_executable(RTPSParticipantTests ${PARTICIPANTTESTS_SOURCE})
+target_compile_definitions(RTPSParticipantTests PRIVATE
+    BOOST_ASIO_STANDALONE
+    ASIO_STANDALONE
+    $<$<AND:$<NOT:$<BOOL:${WIN32}>>,$<STREQUAL:"${CMAKE_BUILD_TYPE}","Debug">>:__DEBUG>
+    $<$<BOOL:${INTERNAL_DEBUG}>:__INTERNALDEBUG> # Internal debug activated.
+    )
+target_include_directories(RTPSParticipantTests PRIVATE
+    ${Asio_INCLUDE_DIR})
+target_link_libraries(RTPSParticipantTests fastcdr fastdds foonathan_memory
+    GTest::gmock
+    ${CMAKE_DL_LIBS})
+gtest_discover_tests(RTPSParticipantTests)
diff --git a/test/unittest/rtps/participant/ParticipantTests.cpp b/test/unittest/rtps/participant/ParticipantTests.cpp
new file mode 100644
index 00000000000..f37c49392b3
--- /dev/null
+++ b/test/unittest/rtps/participant/ParticipantTests.cpp
@@ -0,0 +1,69 @@
+// Copyright 2020 Proyectos y Sistemas de Mantenimiento SL (eProsima).
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <fastdds/rtps/RTPSDomain.hpp>
+#include <fastdds/rtps/participant/RTPSParticipant.hpp>
+#include <fastdds/rtps/writer/RTPSWriter.hpp>
+#include <fastdds/rtps/history/IPayloadPool.hpp>
+#include <fastdds/rtps/history/WriterHistory.hpp>
+
+#include <rtps/writer/BaseWriter.hpp>
+
+
+namespace eprosima {
+namespace fastdds {
+namespace rtps {
+
+using namespace testing;
+
+RTPSParticipant* transport_size_participant_init(
+        uint32_t max_message_size)
+{
+    uint32_t domain_id = 0;
+    std::string max_message_size_str = std::to_string(max_message_size);
+
+    RTPSParticipantAttributes p_attr;
+    BuiltinTransportsOptions options;
+    options.maxMessageSize = max_message_size;
+    p_attr.setup_transports(BuiltinTransports::SHM, options);
+    RTPSParticipant* participant = RTPSDomain::createParticipant(
+        domain_id, true, p_attr);
+
+    return participant;
+}
+
+/**
+ * This test checks that the participant is not created when the max message size is smaller than the PDP package size
+ * but it is properly created when the max message size is bigger than the PDP package size.
+ */
+TEST(RTPSParticipantTests, participant_creation_message_size)
+{
+    ASSERT_EQ(transport_size_participant_init(100), nullptr);
+    ASSERT_NE(transport_size_participant_init(1000), nullptr);
+}
+
+} // namespace rtps
+} // namespace fastdds
+} // namespace eprosima
+
+int main(
+        int argc,
+        char** argv)
+{
+    testing::InitGoogleMock(&argc, argv);
+    return RUN_ALL_TESTS();
+}