Commit d68d82e

@@ -0,0 +1,3 @@
+#!/bin/env ruby
+
+game = Game.new

@@ -1,8 +1,9 @@
 class Cell
-  attr_accessor :x, :y
+  attr_reader :x, :y
 
-  def initialize(populated: false)
+  def initialize(populated: false, x: 1, y: 1)
     @populated = populated
+    @x, @y = x, y
   end
 
   def spawn(world)

@@ -0,0 +1,18 @@
+class Game
+  def initialize(printer)
+  end
+
+  def play(max_x, max_y)
+    World.new
+  end
+
+  def create_cells(max_x, max_y)
+    items = []
+    (1..max_x).each do |x|
+      (1..max_y).each do |y|
+        items.push(Cell.new(x: x, y: y))
+      end
+    end
+    items
+  end
+end

@@ -112,10 +112,7 @@ describe Cell do
     end
 
     def create_cell(x, y)
-      Cell.new.tap do |cell|
-        cell.x = x
-        cell.y = y
-      end
+      Cell.new(x: x, y: y)
     end
   end
 end

@@ -0,0 +1,36 @@
+describe Game do
+  subject { Game.new(printer) }
+  let(:printer) { double }
+
+  xcontext "#start" do
+    it "prints the output of the world" do
+      subject.play(3, 3)
+      expect(world).to have_received(:print_each_using).with(printer)
+    end
+  end
+
+  context "#create_cells" do
+    context "for a 2x2 grid" do
+      let(:results) { subject.create_cells(2, 2) }
+
+      it "returns the correct number of cells" do
+        expect(results.count).to eql(4)
+      end
+
+      it "returns a cell for each coordinate" do
+        expect(find(1, 1).x).to eql(1)
+        expect(find(1, 1).y).to eql(1)
+        expect(find(1, 2).x).to eql(1)
+        expect(find(1, 2).y).to eql(2)
+        expect(find(2, 1).x).to eql(2)
+        expect(find(2, 1).y).to eql(1)
+        expect(find(2, 2).x).to eql(2)
+        expect(find(2, 2).y).to eql(2)
+      end
+
+      def find(x, y)
+        results.find { |cell| cell.x == x && cell.y == y }
+      end
+    end
+  end
+end

@@ -1,8 +1,8 @@
 describe World do
   subject { World.new(cells) }
   let(:cells) { [neighbor, other_cell] }
-  let(:neighbor) { Object.new }
-  let(:other_cell) { Object.new }
+  let(:neighbor) { double }
+  let(:other_cell) { double }
 
   context "#neighbors_for" do
     let(:cell) { Object.new }

@@ -16,6 +16,7 @@
 # See http://rubydoc.info/gems/rspec-core/RSpec/Core/Configuration
 require "world"
 require "cell"
+require 'game'
 RSpec.configure do |config|
 # The settings below are suggested to provide a good initial experience
 # with RSpec, but feel free to customize to your heart's content.