fold position module and object position

simpler that way, aslo code is moving to listners

test/risc/position/test_position.rb

@@ -1,5 +1,91 @@
 require_relative "helper"
 
+module Risc
+  # tests that do no require a boot and only test basic positioning
+  class TestPosition < MiniTest::Test
+
+    def test_new
+      assert Position.new(self , -1)
+    end
+    def test_next_slot
+      mov = Arm::ArmMachine.mov(:r1 , :r1)
+      position = Position.new(mov , 0)
+      assert_equal 4, position.next_slot
+    end
+    def test_has_get_code
+      assert_nil Position.new(self , -1).get_code
+    end
+    def pest_creation_ok
+      assert Position.new(self,0)
+    end
+    def pest_creation_fail
+      assert_raises {Position.new("0")}
+    end
+    def pest_add
+      res = Position.new(self,0) + 5
+      assert_equal 5 , res
+    end
+    def pest_sub
+      res = Position.new(self,0) - 1
+      assert_equal -1 , res
+    end
+    def pest_sub_pos
+      res = Position.new(self,0) - Position.new(self,0)
+      assert_equal 0 , res
+    end
+    def pest_set
+      pos = Position.set(self , 5)
+      assert_equal 5 , pos.at
+    end
+    def tet_tos
+      assert_equal "0x10" , Position.set(self).to_s
+    end
+    def pest_reset_ok
+      pos = Position.set(self , 5)
+      pos = Position.set(self , 10)
+      assert_equal 10 , pos.at
+    end
+    def pest_reset_fail
+      Position.set(self , 5)
+      assert_raises{Position.set(self , 10000)}
+    end
+    def pest_raises_set_nil
+      assert_raises { Position.set(self,nil)}
+    end
+    def pest_at
+      pos = Position.set(self , 5)
+      pos = Position.at(5)
+      assert_equal 5 , pos.at
+    end
+  end
+  class TestPositionEvents < MiniTest::Test
+    def setup
+      @position = Position.new(self)
+    end
+    def pest_has_register
+      assert @position.register_event(:position_changed , self)
+    end
+    def pest_can_unregister
+      assert @position.register_event(:position_changed ,self)
+      assert @position.unregister_event(:position_changed ,self)
+    end
+    def pest_fires
+      @position.register_event(:position_changed ,self)
+      @position.trigger(:position_changed , @position)
+      assert_equal @position , @trigger
+    end
+    def pest_no_fire_after_unregister
+      assert @position.register_event(:position_changed ,self)
+      assert @position.unregister_event(:position_changed ,self)
+      @position.trigger(:position_changed , @position)
+      assert_nil @trigger
+    end
+    def position_changed(pos)
+      @trigger = pos
+    end
+  end
+end
+
 module Risc
   class TestMachinePositions < MiniTest::Test
     def setup