I created this test file because I wanted something that used very little filament (as compared with many test files with large times and volumes) and I wanted to achieve more with less. This little file allows for testing of all the following while using only 1g of filament in under 15 min:

A. base layer, of course, B. a layer stack (1mm or 5 layers at 0.2mm) C. a flat top (20mm, equivalent to your standard cube test) D. stringing between pillars E. an supported arch

That's five tests in 1g. Alternatively, you can also put several of these files into the corners/axis end points of your bed to use for a level test. I do this because, again, it uses less filament than most test prints.