ali king spec

king_spec.rb

require 'rails_helper'

RSpec.describe King, type: :class do

  describe '.valid_move?' do
    it "should check for valid move for a King" do
      user = FactoryGirl.create(:user)
      piece = FactoryGirl.create(:king, user_id: user.id)
      piece.x = 4; piece.y = 4; piece.color = "white"
      expect(piece.valid_move?(piece.x+1, piece.y+0)).to eq(true)
      expect(piece.valid_move?(piece.x-1, piece.y+0)).to eq(true)
      expect(piece.valid_move?(piece.x+0, piece.y+1)).to eq(true)
      expect(piece.valid_move?(piece.x+0, piece.y-1)).to eq(true)
    end

    it "should check for invalid move for a King" do
      user = FactoryGirl.create(:user)
      piece = FactoryGirl.create(:king, user_id: user.id)
      piece.x = 4; piece.y = 4; piece.color = "white"
      expect(piece.valid_move?(piece.x+0, piece.y+0)).to eq(false)
      expect(piece.valid_move?(piece.x+2, piece.y+0)).to eq(false)
      expect(piece.valid_move?(piece.x-3, piece.y+0)).to eq(false)
      expect(piece.valid_move?(piece.x+0, piece.y+2)).to eq(false)
      expect(piece.valid_move?(piece.x+0, piece.y-3)).to eq(false)
      expect(piece.valid_move?(piece.x+2, piece.y-3)).to eq(false)
    end
  end

  describe '.moved?' do
    it "should check if the piece has moved" do
      user = FactoryGirl.create(:user)
      king = FactoryGirl.create(:king, user_id: user.id)

      expect(king.moved?).to eq(false)
    end
  end

  describe '.is_castle_move?' do
    # on the bottom row, (2,0)     and (6,0) are valid castling destinations
    it "should return false if the target is not one of the possibles" do
      game = blank_game
      king = FactoryGirl.create(:king, user_id: game.white_player_id, game: game)

      expect(king.is_castle_move?(2,1)).to be false
    end

    it "should return false if the target is occupied" do
      game = blank_game
      king = FactoryGirl.create(:king, user_id: game.white_player_id, game: game)
      FactoryGirl.create(:bishop, user_id: game.white_player_id, game: game, x: 0, y:2)

      expect(king.is_castle_move?(0,2)).to be false
    end

    it "should return false if the appropriate rook is not there" do
      game = blank_game
      king = FactoryGirl.create(:king, user_id: game.white_player_id, game: game)
      FactoryGirl.create(:rook, user_id: game.white_player_id, game: game, x: 0, y:0)

      expect(king.is_castle_move?(0,2)).to be false
    end

    it "should return true if move is a castle move" do
      game = blank_game

      king = FactoryGirl.create(:king, user_id: user.id, game: game)

      expect(king.is_castle_move?(king.x-2, king.y)).to eq(true)
    end
  end

  describe '.valid_castle_move?' do
    it "should check for a valid castle move" do
      user = FactoryGirl.create(:user)
      king = FactoryGirl.create(:king, user_id: user.id)

      expect(king.valid_castle_move?).to eq(true)
    end
  end

  def blank_game
      user = FactoryGirl.create(:user)
      game = FactoryGirl.create(:game, white_player_id: user.id)
      game.chess_pieces.destroy_all
      game
  end

end