The Workshop on Automating Test Case Design, Selection and Evaluation (A-TEST) has provided a venue for researchers and industry members alike to exchange and discuss trending views, ideas, state of the art, work in progress, and scientific results on automated testing. Up until now it has run 13 editions since 2009. The 13th edition of the A-TEST workshop has been performed as an in-person workshop in Singapore during 17 to 18 of November, 2022. This edition of the A-TEST workshop was co-located with ESEC/FSE 2022 conference.