/// <reference path="../typings/index.d.ts" />
import { Board, Player, Field, Coordinates, King, Pawn } from '../src/index';
import * as chai from 'chai';
const { assert, expect } = chai;

describe('King', () => {
  it('determines its possible move correctly, (obstacles, strikes)', () => {
    const coords = Coordinates.from(3, 3);
    const board = Board.newGame()
      .setAt(coords, new King(Player.Human))
      .setAt(coords.upleft(), new Pawn(Player.CPU))
      .setAt(coords.downright(), new Pawn(Player.Human));
    const king = board.at(coords).piece;

    const moves = king.possibleMoves(coords, board);
    expect(moves).to.deep.include.members([
      Coordinates.from(3, 2), //up
      Coordinates.from(4, 2), //up-right
      Coordinates.from(4, 3), //right
      // no (4,4)
      Coordinates.from(3, 4), //down
      Coordinates.from(2, 4), //down-left
      Coordinates.from(2, 3), //left
      Coordinates.from(2, 2) //up-left
    ]);
    expect(moves.length).to.eql(7);
  });

  it('determines no possible move, from init position', () => {
    const board = Board.newGame();
    const coords = Coordinates.from(4, 0);
    const rook = board.at(coords).piece;

    const moves = rook.possibleMoves(coords, board);
    expect(moves.length).to.eql(0);
  });
});