The present disclosure provides a method of testing a testing device with a ground noise. The method includes coupling a device under test in series between a source and a ground in an automatic test equipment, coupling a ground bounce generator in series between the device under test and the ground, coupling the testing device to the device under test, providing a current by the source through the device under test and the ground bounce generator, controlling the ground bounce generator to generate the ground noise, and collecting a performance result of the testing device in the automatic test equipment.