Unit Test Framework for Distributed Unit Manager (DUMGR) of 5G RAN

The three main parts of 5G wireless systems, commonly referred to as 5G New Radio technology, are user equipment, access side, and core side. The Open Radio Access Network (O-RAN) is designed to enable the Next Generation-RAN, which is a crucial component for providing wireless connectivity through a radio link between devices and the core network. The Radio Unit, Centralised Unit, and Distributed Unit make up the gNodeB.This project focuses on developing a Unit Test Framework for DU MGR (DU Manager) and creating stubs or simulators that can replace the actual implementation of a component during testing using C language. For instance, we have developed CU stub, RLC stub, MAC stub, DUOAM stub and F1U stub to simulate the behavior of the components that DU MGR interacts with. By using these stubs, we aimed to validate the functionality of DU MGR, which is our Device under Test (DUT). We verified the cell bring-up, UE attach call flows of 5G and negative scenarios possible through writing test cases.The project has used the "VS Code" editor to write code in the C language. Also, we used Jenkins CI/CD to develop and run tests for our code. The "MobaXterm" application was used to execute and repeat testing suites and to verify logs for debugging purposes.