TDD the Chess\Eval\SeActivityEval class

[programarivm]

A new evaluation feature called SeActivityEval needs to be implemented in the php-chess/src/Eval folder. The PHPUnit tests are to be written in the php-chess/tests/unit/Eval/SeActivityEvalTest.php file accordingly.

The activity of a piece is the number of squares it can move to in the next turn — not to confuse with Space, the number of squares controlled by each player.

See:

• TDD the Chess\Eval\ActivityEval class  #703
• 🌐 The equilibrium factor φ #704