diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..12fd24d3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,52 @@
+# Build artifacts
+*.o
+*.lo
+*.a
+*.la
+*.Po
+*.Tpo
+*.gcno
+*.gcda
+*.gcov
+
+# Autotools build artifacts
+/unittest/Makefile
+/unittest/Makefile.in
+/unittest/aclocal.m4
+/unittest/autom4te.cache/
+/unittest/compile
+/unittest/config.guess
+/unittest/config.log
+/unittest/config.status
+/unittest/config.sub
+/unittest/configure
+/unittest/depcomp
+/unittest/install-sh
+/unittest/libtool
+/unittest/ltmain.sh
+/unittest/missing
+/unittest/.deps/
+/unittest/mocks/.deps/
+/unittest/deviceutils/.deps/
+
+# Dependency tracking directories
+**/.deps/
+
+# Build binaries
+/unittest/rdkfw_device_status_gtest
+/unittest/rdkfw_deviceutils_gtest
+/unittest/rdkfw_main_gtest
+/unittest/rdkfw_interface_gtest
+/unittest/rdkfwupdatemgr_main_flow_gtest
+/unittest/rdkFwupdateMgr_handlers_gtest
+/unittest/dbus_handlers_gtest
+/unittest/rdkFwupdateMgr_async_refcount_gtest
+/unittest/rdkFwupdateMgr_async_stress_gtest
+/unittest/rdkFwupdateMgr_async_cleanup_gtest
+/unittest/rdkFwupdateMgr_async_signal_gtest
+/unittest/rdkFwupdateMgr_async_threadsafety_gtest
+
+# Coverage reports
+/src/coverage.info
+/src/coverage.filtered.info
+/src/out/
diff --git a/unittest/fwdl_interface_gtest.cpp b/unittest/fwdl_interface_gtest.cpp
index 01ef3c80..167aa175 100644
--- a/unittest/fwdl_interface_gtest.cpp
+++ b/unittest/fwdl_interface_gtest.cpp
@@ -171,6 +171,46 @@ TEST_F(InterfaceTestFixture, TestName_isDebugServicesEnableSuccess)
     EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1).WillOnce(Return(1));
     EXPECT_EQ(isDebugServicesEnabled(), true);
 }
+TEST_F(InterfaceTestFixture, TestName_getDeviceTypeRFCReadFailure)
+{
+    char deviceType[32] = {0};
+    EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1).WillOnce(Return(0));
+    getDeviceTypeRFC(deviceType, sizeof(deviceType));
+    EXPECT_STREQ(deviceType, "unknown");
+}
+TEST_F(InterfaceTestFixture, TestName_getDeviceTypeRFCProd)
+{
+    char deviceType[32] = {0};
+    EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1)
+        .WillOnce(Invoke([](char* /*type*/, const char* /*key*/, RFC_ParamData_t *param) {
+            snprintf(param->value, sizeof(param->value), "%s", "prod");
+            return 1;
+        }));
+    getDeviceTypeRFC(deviceType, sizeof(deviceType));
+    EXPECT_STREQ(deviceType, "prod");
+}
+TEST_F(InterfaceTestFixture, TestName_getDeviceTypeRFCTest)
+{
+    char deviceType[32] = {0};
+    EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1)
+        .WillOnce(Invoke([](char* /*type*/, const char* /*key*/, RFC_ParamData_t *param) {
+            snprintf(param->value, sizeof(param->value), "%s", "test");
+            return 1;
+        }));
+    getDeviceTypeRFC(deviceType, sizeof(deviceType));
+    EXPECT_STREQ(deviceType, "test");
+}
+TEST_F(InterfaceTestFixture, TestName_getDeviceTypeRFCUnknown)
+{
+    char deviceType[32] = {0};
+    EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1)
+        .WillOnce(Invoke([](char* /*type*/, const char* /*key*/, RFC_ParamData_t *param) {
+            snprintf(param->value, sizeof(param->value), "%s", "staging");
+            return 1;
+        }));
+    getDeviceTypeRFC(deviceType, sizeof(deviceType));
+    EXPECT_STREQ(deviceType, "unknown");
+}
 TEST_F(InterfaceTestFixture, TestName_isIncremetalCDLEnableSuccess)
 {
     EXPECT_CALL(*g_InterfaceMock, getRFCParameter(_, _, _)).Times(1).WillOnce(Return(1));