Hello r/gamedev, I made this free little tool to test out controller inputs, since there's hardly a way to test them out without running a game or some other unrelated software :
TROPRO Wireless Controller for PS4, Gamepad Joystick Remote Controller with Back Buttons Compatible with PS4/Pro/Slim/PC/iPhone/Mac,Turbo/Audio Function/Interchangeable Stick Module - Walmart.com
User manual Trust GXT 545 (English - 2 pages)
Trust Dual Stick Gamepad (GM-1520) for PC & PS2 : Amazon.it: Videogiochi
Download Trust Computer Game Controller Drivers for Windows 11, 10, 8, 7, XP
TROPRO Wireless Controller for PS4, Gamepad Joystick Remote Controller with Back Buttons Compatible with PS4/Pro/Slim/PC/iPhone/Mac,Turbo/Audio Function/Interchangeable Stick Module - Walmart.com