Testing device and testing system for testing reliability of interface employed by electronic device

A testing system, comprising:

• an electronic device comprising at least one interface;
• and
• a testing device comprising:
• a shell defining a through hole and a first accommodating space, the through hole interconnects the accommodating space and the outside of the shell;
• a motor fixed in the first accommodating space;
• an eccentrically-rotating wheel defining at least one eccentric hole, an eccentricity e defined between the center of the eccentrically-rotating wheel and each of the at least one eccentric hole, and the motor configured to drive the eccentrically-rotating wheel to rotate around one of the at least one eccentric hole;
• a sliding assembly configured to move back and forth along a first direction in the first accommodating space, the sliding assembly comprising a fixing portion, and an end of the fixing portion protruded out of the shell from the through hole;
• and
• a testing plug fixed to the end of the fixing portion of the sliding assembly protruded out of the shell, a periphery of the eccentrically-rotating wheel abutting against two opposite sides of the sliding assembly, wherein the eccentricity e defined between the one of the at least one eccentric hole and the center of the eccentrically-rotating wheel causes the sliding assembly to move back and forth along the first direction when the eccentrically-rotating wheel rotates, the testing plug move back and forth in unison with and the fixing portion of the sliding assembly, and the testing plug is capable of inserted into the at least one of the interface of the electronic device more than once.