Functional
Try to run the program.
Does the program compile and run without any error or warning?
Set one or more control points by left-clicking on the canvas.
Confirm that the program allows you to mark these control points.
Check if the program draws a small circle around the control points for identification purposes.
Set three or more control points on the canvas and press Enter.
Observe whether Chaikin's algorithm starts the animation.
To exit the program, press the Escape key.
Ensure the program exits without any errors.
Start the program and set only one control point by left-clicking on the canvas. Then, press Enter.
Confirm that only the selected control point is visible, and nothing else changes.
Restart the program, set two control points by left-clicking on the canvas, and press Enter.
Check if only a straight line is drawn between the two control points.
Restart the program, set three or more control points by left-clicking on the canvas, and press Enter.
Confirm that the animation completes 7 steps before restarting.
Restart the program, set three or more control points by left-clicking on the canvas, and press Enter. Then, press Escape to exit the program.
Verify that the program exits without any errors.
Start the program and press Enter without selecting any points.
Check if the program continues without any errors.
After pressing Enter without selecting points, try placing points without needing to restart the program.
Bonus Features
Check if a message is displayed when you press Enter without drawing any points, reminding you to add points.
Verify if you can clear the screen and add new control points without restarting the program.
Check if it's possible to drag the control points in real time and observe the generation of a new curve.
