fix bug in slot_load and definition

move parfait helper for reuse

test/mom/instruction/test_slot_load2.rb

@@ -11,12 +11,14 @@ module Mom
       @instructions = @compiler.instructions
     end
 
-    def test_ins_next_class
+    def test_ins_next_classes
+      assert_equal Risc::SlotToReg , @instructions[0].class
       assert_equal Risc::SlotToReg , @instructions[1].class
       assert_equal Risc::SlotToReg , @instructions[2].class
     end
     def test_ins_next_next_class
       assert_equal Risc::RegToSlot , @instructions[3].class
+      assert_equal NilClass , @instructions[4].class
     end
 
     def test_ins_next_reg

test/mom/instruction/test_slot_load3.rb

@@ -0,0 +1,50 @@
+require_relative "helper"
+
+module Mom
+  class TestSlotLoad3 < Parfait::ParfaitTest
+
+    def setup
+      super
+      method = make_method
+      @compiler = Risc::FakeCompiler.new
+      @cache_entry = Parfait::CacheEntry.new(method.frame_type, method)
+      load = SlotLoad.new( [@cache_entry , :cached_type] , [:message, :type] )
+      load.to_risc(@compiler)
+      @instructions = @compiler.instructions
+    end
+    def test_ins_next_class
+      assert_equal Risc::SlotToReg ,   @instructions[0].class
+      assert_equal Risc::LoadConstant, @instructions[1].class
+    end
+
+    def test_ins_next_class
+      assert_equal Risc::RegToSlot ,   @instructions[2].class
+      assert_equal NilClass ,   @instructions[3].class
+    end
+    def test_ins_load
+      assert_equal :r1 , @instructions[1].register.symbol
+      assert_equal Parfait::CacheEntry , @instructions[1].constant.class
+    end
+
+    def test_ins_next_reg
+      assert_equal :r1 , @instructions[0].register.symbol
+    end
+    def test_ins_next_arr
+      assert_equal :r0 , @instructions[0].array.symbol
+    end
+    def test_ins_next_index
+      assert_equal 0 , @instructions[0].index
+    end
+
+    def test_ins_next_2_reg
+      assert_equal :r1 , @instructions[2].register.symbol
+    end
+    def test_ins_next_2_arr
+      assert_equal :r1 , @instructions[2].array.symbol
+    end
+    def test_ins_next_2_index
+      assert_equal 1 , @instructions[2].index
+    end
+
+  end
+end