TestShark: A Passive Conformance Testing System for ISO 15118 Using Wireshark

ISO 15118 is an international standard for charging communication between electric vehicles and charging infrastructure. Among the series of ISO 15118, ISO 15118-4, ISO 15118-5, ISO 15118-9, and ISO 15118-21 (under development) define active conformance testing methodologies where the test system engages with the system under test as a primary actor and tests whether the counterparty is complying with the standard. However, such a full-fledged test system is not appropriate during system development and field testing. In this paper, a passive conformance testing approach that monitors the packets between the electric vehicle and the charger and performs conformance testing against the requirements of ISO 15118 is proposed. This novel approach exhibits practicality yet comprehensive testing capability for field testing because of its passive access to the packets with deep analysis for the conformance. TestShark, a modified packet analysis tool, showed that the passive conformance testing system can help developers and operators analyze problems in charging communication and assess the quality of implementation with respect to ISO 15118.