A "dummy test" generally means using a placeholder or simulation (like a crash test dummy or fake text) to check a system/process before the real thing, identifying issues without consequence, but it also refers to high-tech crash test dummies (ATDs) measuring human injury in vehicle safety, or even placeholder text (like Lorem Ipsum) for design. Essentially, it's about simulating reality for testing, whether for safety (cars), software (login tests), or layout (design).