Test cases of ‘elevators’?

The best way to write test cases is to categorize them such that it can be applied to the given situation. For instance, if I take an example of ‘Lift aka Elevators‘ then what all tests we can actually perform on lift could be like this:

Functional Tests

The lift should move in an upward direction when the number is pressed greater than the floor number it is presently on.
The lift should move in a downward direction when the number is pressed lesser than the floor number it is presently on.
Lift when empty, should not move.

Usability Tests

The lift should have all numbers starting from the basement to the top floor of the building.
The lift should have close and open button which can be pressed while each stop.
Each time lift gets stopped on any floor then it shall display the number of floors on the LED display.
Each time lift gets stopped on any floor then it shall announce the number of floors.
Lift’s should be made such that it the user can get comfortably stand while the movement.
The lift should properly display stating the maximum and minimum range or weight and people allowed in it.

Load Tests

The lift should allow weight less than 10kgs at a time.
The lift should not allow weight more than 100kgs at a time.

load testing

Stress Tests

The lift should not bear load above 1000kgs
The lift should not bear a load of less than 20kgs.

Performance Tests

When put in high-frequency energy, no wire should get burn
When put in low-frequency energy, no wire should get burn
When put in various cold and hot temperatures, Lift’s speed should not get effective.
Lift’s while moving should not create noise.

performance testing

Security Tests

When lifts all buttons are pressed multiple times then lift should start moving to the lowest floor.
When the danger button is pressed in a lift then lift should get open on the nearest floor in the direction it is moving in.
The lift should have a Fan and Phone button for user security.