There are 7 total Test Models and i use UltiMaker Cura for the slicing program.

Stringing test: This is for testing stringing. Use higher "Retraction distance" to reduce stringing and lower temp

Top and bottom test: Use in the initial Layer and Top/Bottom settings to create a good lower and top layer.

Horizontal expansion test: The model is 10mm wide. The setting "Horizontal expansion" will make the model bigger or smaller. So if you have printed the model and you get a 9.8mm in diameter, you can use this to make it bigger. A positive value makes the wider and a negative value makes it smaller.

Hole Expansion test: Same as Horizontal expansion, but only in holes. Its good for making moving parts

Support test: For testing support setting

Initial layer small test: Test inital layer. Make the model the same hight as the inital layer hight.

Tolerance test: To check tolerance from 0.5mm to 0mm.