Implement b_transport and add tests for it

tests/tests_dramsys/CMakeLists.txt

@@ -19,6 +19,8 @@ target_link_libraries(${PROJECT_NAME}
 	gtest_main
 )
 
-gtest_discover_tests(${PROJECT_NAME})
+gtest_discover_tests(${PROJECT_NAME}
+	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
 
 build_source_group()