Feature: basic checking commands length and type are valid

Scenario Outline: Input invalid command

Given the program is started

When the user enters the command "C 3 3"

When the user enters the command "<command>"

Then the output should be an error message "<error>"

Examples:

| command | error |

| K -1 -1 2 2 x | Invalid command type must be in [C,L,R,B,Q]. |

| L 2 2 2 2 x 2 | Invalid command format for line creation. example: L x1 y1 x2 y2 color |

| L 2 2 5 x x | invalid literal for int() with base 10: 'x' |

| R 0 0 6 6 x 2 | Invalid command format for rectangle creation. example: R x1 y1 x2 y2 color |

| C 0 0 6 | Canvas command must be: C width height |

Scenario: Try to draw polygon before creating canvas

Given the program is started

When the user enters the command "L 2 2 2 2 X"

Then the output should be an error message "You must create a canvas first (C x y)."