#### 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.