Created a tic-tac-toe game with validation and error checking

Gemfile

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+source 'https://rubygems.org'
+gem 'rspec'
+gem 'pry'
+gem 'faker'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    coderay (1.1.0)
+    diff-lcs (1.2.5)
+    faker (1.4.3)
+      i18n (~> 0.5)
+    i18n (0.7.0)
+    method_source (0.8.2)
+    pry (0.10.1)
+      coderay (~> 1.1.0)
+      method_source (~> 0.8.1)
+      slop (~> 3.4)
+    rspec (3.2.0)
+      rspec-core (~> 3.2.0)
+      rspec-expectations (~> 3.2.0)
+      rspec-mocks (~> 3.2.0)
+    rspec-core (3.2.3)
+      rspec-support (~> 3.2.0)
+    rspec-expectations (3.2.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-mocks (3.2.1)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.2.0)
+    rspec-support (3.2.2)
+    slop (3.6.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  faker
+  pry
+  rspec
+
+BUNDLED WITH
+   1.10.3

lib/controller.rb

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+require_relative 'view'
+require_relative 'model'
+
+class TTTController
+
+  def run!
+    board = TTT.new
+    view = TTTView.new board
+
+    view.print_title
+
+    #Make todoList methods like RESTful endpoints (new/edit/update/delete)
+    #Think Backbone Model & View
+
+    loop do
+      view.print_menu
+      case view.fetch_user_input.upcase
+      when "S"
+        board.start_game
+        view.print_help_board
+        while not board.is_solved? do
+          view.print_board
+          input = view.fetch_user_input
+          case input
+          when 1..9
+            validMove = board.place_mark input
+            if not validMove
+              view.print_invalid_move
+            end
+          when "Q"
+            puts "BYE!"
+            exit
+          else 
+            view.print_help_board
+          end
+        end
+        view.print_board
+        view.print_solved
+      when "Q"
+        puts "We're done" 
+        exit
+      else
+        view.print_error_message
+      end
+    end
+  end
+end
+
+TTTController.new.run!

lib/model.rb

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+require 'pry'
+class TTT
+  attr_reader :player1turn, :board, :solved
+
+  def initialize
+    @player1turn = false
+    @board = Array.new 10, "-"
+    @solved = false
+  end
+
+  def place_mark location
+    case
+    when board[location-1] != '-' then return false
+    end
+    case @player1turn
+    when true
+      mark = "X"
+    else
+      mark = "O"
+    end
+    @board[location-1] = mark
+    @player1turn = ! @player1turn
+    true
+
+  end
+
+  def start_game
+    @player1turn = true
+    @board = Array.new 10, "-"
+  end
+
+  def is_solved?
+    check_horizontals or check_verticals or check_diagonals
+  end
+
+
+  def check_horizontals #TEST THIS
+    for start in 1..4
+      startIndex = start * 3 - 3
+      mark1 = board[startIndex] 
+      case
+      when mark1 != board[startIndex+1]
+        false
+      when mark1 != board[startIndex+2]
+        false
+      when mark1 == "-"
+        false
+      else
+        return true
+      end 
+    end
+    return false
+  end
+
+  def check_verticals
+    for start in 1..4
+      startIndex = start -1
+      mark1 = board[startIndex]
+      #binding.pry
+      case
+      when mark1 != board[startIndex+3]
+        false
+      when mark1 != board[startIndex+6]
+        false
+      when mark1 == "-"
+        false
+      else
+        return true
+      end 
+    end
+    return false
+  end
+
+  def check_diagonals
+    startIndex = 0
+    mark1 = board[startIndex]
+    case 
+    when mark1 != board[startIndex+4] then false
+    when mark1 != board[startIndex+8] then false
+    when mark1 == "-" then false
+    else
+      return true
+    end
+    startIndex = 2
+    mark1 = board[startIndex]
+    case 
+    when mark1 != board[startIndex+2] then false
+    when mark1 != board[startIndex+4] then false
+    when mark1 == "-" then false
+    else
+      return true
+    end
+    return false
+  end
+end

lib/view.rb

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+class TTTView
+  attr_reader :game
+
+  def initialize newGame=TTT.new
+    @game = newGame
+  end
+
+  def print_title
+title = <<TITLE
+
+     ********** || **********
+     *     Tic Tac Toe      *
+     ********** || **********
+
+TITLE
+     puts title
+   end
+
+  def print_menu
+    menu = <<MENU
+      Prepare yourself for 
+    the ultimate tic-tac-toe 
+          experience
+    (S)tart a new game
+    (Q)uit
+
+MENU
+    puts menu
+  end
+
+  def print_invalid_move
+    puts "ERROR... Space already filled"
+  end
+
+  def print_solved
+    case game.player1turn
+    when true
+      puts "Player 0 Wins!"
+    when false
+      puts "Player X Wins!"
+    end
+  end
+
+  def fetch_user_input(question=nil)
+    puts question if question
+    print "> "
+    output = gets.chomp
+    if output.to_i != 0
+      output.to_i
+    else
+      output.upcase
+    end
+  end
+
+  def print_error_message
+    puts "Type what's in the ()"
+  end
+
+  def print_help_board
+    help_board = <<help_board
+    -----------------------------------
+Input the location that you want to place a mark
+1\#2\#3
+\#\#\#\#\#
+4\#5\#6
+\#\#\#\#\#
+7\#8\#9
+To bring this up again type 'h'
+    -----------------------------------
+help_board
+    puts help_board
+    help_board
+  end
+
+  def print_board
+    line = ""
+    linenum = 1
+    lm1 = @game.board[(3 * linenum)-3]
+    lm2 = @game.board[(3 * linenum)-2]
+    lm3 = @game.board[(3 * linenum)-1]
+    line += "#{lm1}\##{lm2}\##{lm3}"
+    for linenum in 2..3
+      lm1 = @game.board[(3 * linenum)-3]
+      lm2 = @game.board[(3 * linenum)-2]
+      lm3 = @game.board[(3 * linenum)-1]
+      line += "\n\#\#\#\#\#"
+      line += "\n#{lm1}\##{lm2}\##{lm3}"
+    end
+    puts line
+    line
+    puts "    -----------------------------------"
+  end
+
+end

spec/model_spec.rb

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+require 'rspec'
+require 'model'
+require 'pry'
+
+describe 'TTT' do
+
+  let(:game) { TTT.new}
+
+  it '.initialize' do 
+    expected = Array.new(10, "-")
+    expect(game.board.eql? expected).to be true
+  end
+
+  it '.place_mark' do
+    expected = Array.new(10, "-")
+    expected[1] = "O"
+    game.place_mark 1
+    #binding.pry
+    expect(game.board.eql? expected ).to be true
+  end
+
+  it '.start_game' do
+    game.start_game
+    expect(game.player1turn == true). to be true
+    expected = Array.new(10, "-")
+    expect(game.board.eql? expected).to be true
+  end
+
+  it '.check_horizontals123' do
+    game.place_mark 1
+    game.place_mark 4
+    game.place_mark 2
+    game.place_mark 5
+    game.place_mark 3
+    expect(game.check_horizontals).to be true
+  end
+
+  it '.check_horizontals12' do
+    game.place_mark 1
+    game.place_mark 4
+    game.place_mark 2
+    game.place_mark 5
+    expect(game.check_horizontals).to be false
+  end
+
+  it '.check_horizontals789' do
+    game.place_mark 7
+    game.place_mark 4
+    game.place_mark 8
+    game.place_mark 5
+    game.place_mark 9
+    #binding.pry
+    expect(game.check_horizontals).to be true
+  end
+
+  it '.check_verticals147' do
+    game.place_mark 1
+    game.place_mark 5
+    game.place_mark 4
+    game.place_mark 6
+    game.place_mark 7
+    #binding.pry
+    expect(game.check_verticals).to be true
+  end
+
+  it '.check_verticals369' do
+    game.place_mark 3
+    game.place_mark 5
+    game.place_mark 6
+    game.place_mark 4
+    game.place_mark 9
+    expect(game.check_verticals).to be true
+  end
+
+  it '.check_diagonals159' do
+    game.place_mark 1
+    game.place_mark 2
+    game.place_mark 5
+    game.place_mark 3
+    game.place_mark 9
+    expect(game.check_diagonals).to be true
+  end
+
+  it '.check_diagonals357' do
+    game.place_mark 3
+    game.place_mark 2
+    game.place_mark 5
+    game.place_mark 1
+    game.place_mark 7
+    expect(game.check_diagonals).to be true
+  end
+
+  it '.check_diagonalsfail' do
+    game.place_mark 1
+    game.place_mark 2
+    game.place_mark 3
+    game.place_mark 4
+    game.place_mark 5
+    expect(game.check_diagonals).to be false
+  end
+end