test(inventory): add unit test for SendDeltaEvent method

src/modules/inventory/tests/CMakeLists.txt

@@ -2,5 +2,6 @@ cmake_minimum_required(VERSION 3.22)
 
 project(unit_tests)
 
+add_subdirectory(inventory)
 add_subdirectory(inventoryImp)
 add_subdirectory(invNormalizer)

src/modules/inventory/tests/inventory/CMakeLists.txt

@@ -0,0 +1,14 @@
+find_package(GTest CONFIG REQUIRED)
+
+add_executable(inventory_unit_test inventory_test.cpp)
+configure_target(inventory_unit_test)
+target_include_directories(inventory_unit_test PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../include)
+target_link_libraries(inventory_unit_test PRIVATE
+    Inventory
+    GTest::gtest
+    GTest::gtest_main
+    GTest::gmock
+    GTest::gmock_main)
+if(NOT WIN32)
+add_test(NAME InventoryTest COMMAND inventory_unit_test)
+endif()

src/modules/inventory/tests/inventory/inventory_test.cpp

@@ -0,0 +1,51 @@
+#include <cstdio>
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+#include "inventory.hpp"
+
+constexpr auto INVENTORY_DB_PATH {"TEMP.db"};
+
+class InventoryTest : public ::testing::Test
+{
+    protected:
+
+        void SetUp() override {}
+        void TearDown() override
+        {
+            std::remove(INVENTORY_DB_PATH);
+        }
+
+        Inventory &inventory = Inventory::Instance();
+};
+
+TEST_F(InventoryTest, SendUpdateEvent) {
+    ::testing::MockFunction<int(const Message&)> mockPushMessage;
+
+    inventory.SetPushMessageFunction(mockPushMessage.AsStdFunction());
+
+    EXPECT_CALL(mockPushMessage, Call(::testing::_))
+        .WillOnce([](const Message& msg)
+        {
+            auto expectedData = R"({"key":"value"})";
+            auto expectedMetadata = R"({"id":"123","module":"inventory","operation":"update","type":"hardware"})";
+
+            EXPECT_EQ(msg.data.dump(), expectedData);
+            EXPECT_EQ(msg.metaData, expectedMetadata);
+            return 1;
+        });
+
+    auto inputData = R"({
+        "type": "hardware",
+        "operation": "update",
+        "id": "123",
+        "data": {"key": "value"}
+    })";
+
+    inventory.SendDeltaEvent(inputData);
+}
+
+int main(int argc, char** argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}