add empty stubs

unittests/cfdp/handler/testSourceHandler.cpp

@@ -111,4 +111,7 @@ TEST_CASE("CFDP Source Handler", "[cfdp]") {
     CHECK(sourceHandler.getStep() == SourceHandler::TransactionStep::IDLE);
     CHECK(sourceHandler.getState() == CfdpState::IDLE);
   }
+
+  SECTION("Transfer small file") {}
+  SECTION("Transfer two segment file") {}
 }