diff --git a/iceoryx_posh/test/moduletests/test_roudi_system_manager.cpp b/iceoryx_posh/test/moduletests/test_roudi_system_manager.cpp
new file mode 100644
index 0000000000..5e9ed715db
--- /dev/null
+++ b/iceoryx_posh/test/moduletests/test_roudi_system_manager.cpp
@@ -0,0 +1,63 @@
+#include "iceoryx_posh/internal/roudi/roudi.hpp"
+#include <gtest/gtest.h>
+
+TEST(RoudiSystemD, CreateObject)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "aa77b5f6-ffb3-4267-982d-dfe85da384ca");
+    std::unique_ptr<iox::roudi::service_management::ServiceManagementSystemd> roudiSendMessage;
+    ASSERT_NO_THROW(std::make_unique<iox::roudi::service_management::ServiceManagementSystemd>());
+}
+
+TEST(RoudiSystemD, CheckConstantsSizeThreadName)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "9c39f45c-a63c-43ec-9606-e50c33247b3f");
+    std::unique_ptr<iox::roudi::service_management::ServiceManagementSystemd> roudiSendMessage;
+    ASSERT_NO_THROW(std::make_unique<iox::roudi::service_management::ServiceManagementSystemd>());
+    ASSERT_EQ(roudiSendMessage->SIZE_THREAD_NAME, 15) << "Size thread must equal 15 simbols";
+}
+
+TEST(RoudiSystemD, CheckConstantsSizeString)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "0b3e3058-6052-49cc-8a67-723f3775a745");
+    std::unique_ptr<iox::roudi::service_management::ServiceManagementSystemd> roudiSendMessage;
+    ASSERT_NO_THROW(std::make_unique<iox::roudi::service_management::ServiceManagementSystemd>());
+    ASSERT_EQ(roudiSendMessage->SIZE_STRING, 4096) << "Size string must equal 4096 simbols";
+}
+
+TEST(RoudiSystemD, SetThreadNameHelper)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "b9ff9e83-9dde-4221-bd1e-c1016ec2d5ff");
+    std::unique_ptr<iox::roudi::service_management::ServiceManagementSystemd> roudiSendMessage;
+    bool result = false;
+
+    ASSERT_NO_THROW(std::make_unique<iox::roudi::service_management::ServiceManagementSystemd>());
+    iox::string<iox::roudi::service_management::ServiceManagementSystemd::SIZE_THREAD_NAME> nameThread = "test";
+    ASSERT_NO_THROW(result = roudiSendMessage->setThreadNameHelper(nameThread));
+    ASSERT_EQ(result, true) << "Can not change name thread";
+}
+
+TEST(RoudiSystemD, GetEnvironmentVariableReturnsCorrectValue)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "12dfa746-d1f1-4b4e-864d-2cb28ee49f70");
+    const char* const env_var_name = "TEST_ENV_VAR";
+    const char* const env_var_value = "test_value";
+
+    auto set_env = IOX_POSIX_CALL(setenv)(env_var_name, env_var_value, 1).failureReturnValue(-1).evaluate();
+    EXPECT_FALSE(set_env.has_error()) << "setenv failed with error: " << set_env.get_error().errnum;
+
+    iox::roudi::service_management::ServiceManagementSystemd sut;
+
+    std::string result = sut.getEnvironmentVariable(env_var_name);
+
+    EXPECT_EQ(result, env_var_value);
+}
+
+TEST(RoudiSystemD, GetEnvironmentVariableHandlesNonExistentVar)
+{
+    ::testing::Test::RecordProperty("TEST_ID", "9595728f-a504-46e3-8672-b074696326a4");
+    iox::roudi::service_management::ServiceManagementSystemd sut;
+
+    std::string result = sut.getEnvironmentVariable("NON_EXISTENT_VAR");
+
+    EXPECT_TRUE(result.empty());
+}