Pushing all changes

game/spec/universe_spec.rb

@@ -147,4 +147,17 @@ RSpec.describe Universe do
       expect(universe.planets.length).to eq 18
     end
   end
+
+  describe '#tick' do
+    it 'runs a tick of the game' do
+      universe.create_universe
+      player_1 = Player.new('test player 01')
+      universe.add_player(player_1)
+      universe.add_ship(player_1, Position.new(3, 5))
+      ships = universe.get_player_ships(player_1)
+      universe.move_ship(player_1, ships[0], Position.new(2, 4))
+      # Now we tick the universe and the ship should move a little and the player should gain resources.
+      expect{universe.tick}.to_not raise_error()
+    end
+  end
 end