Complete the following coding assignment in a reasonable time frame to show your competence with SOLID principles, unit testing and logical problem solving.

The assignment comes pre-packaged with an installation of the Lumen framework. Documentation and requirements for the framework can be found on the Lumen website.

You must make use of SOLID principles and unit test all your code. Unit testing documentation with the lumen framework can be found on the Testing section of the Lumen website.

Complete this assignment by returning the correct output for the following commands.

Return a rectangle's area:

php artisan shape:rectangle 10 5

Return a square's area:

php artisan shape:square 15

Return a circle's area

php artisan shape:circle 55

Return a triangle's area:

php artisan shape:triangle 25 45

Registered artisan commands are located in app/Console/Kernel.php.

Your library files for the assignment belong in app/AssignmentLibraries/.

Your unit testing files belong in app/AssignmentLibraries/.