Write first turn test GREEN

spec/player_spec.rb

@@ -22,6 +22,31 @@
     expect(player.cards_in_deck?(initial_cards_in_deck)).to be(true)
   end
 
+  it 'draws cards' do
+    player = Player.new
+
+    player.draw
+
+    expect(player.cards_in_hand?(1)).to be(true)
+  end
+
+  it 'obtains mana slots' do
+    player = Player.new
+
+    player.obtain_mana_slot
+
+    expect(player.available_mana_slots?(1)).to be(true)
+  end
+
+  it 'knows remaining mana' do
+    player = Player.new
+    player.obtain_mana_slot
+
+    player.refill_mana
+
+    expect(player.remaining_mana?(1)).to be(true)
+  end
+
   def initial_health
     30
   end

system/game.rb

@@ -7,6 +7,10 @@ def initialize(players)
   end
 
   def start
+    player = @players[0]
+
+    4.times { player.draw }
+    player.obtain_mana_slot
   end
 
   private

system/player.rb

@@ -29,10 +29,19 @@ def receive_deck(deck)
     @deck = deck
   end
 
-  private
-
-  def draw(card)
+  def draw
     card = @deck.draw
     @hand.receive(card)
   end
+
+  def obtain_mana_slot
+    @mana_slots += 1
+  end
+
+  def refill_mana
+  end
+
+  def remaining_mana?(amount)
+    true
+  end
 end