Product development of O-RAN equipment and its deployment in commercial environments is progressing, and migration from existing RAN products is expected in the future. In order to provide stable and high-quality mobile network services, O-RAN products must achieve the same or better quality and performance as existing RAN products. However, the testing required to achieve this is becoming more complex than ever before. In addition, the openness of the O-RAN architecture has made it necessary to test O-RAN systems with many test patterns and from several angles, such as test scenarios under real world conditions and several combinations of O-RAN devices, which leads to a combinatorial explosion. This talk will address the latest test methodologies and architectures that helps you to conduct more complex tests and achieve your quality goals efficiently and automatically.