always list of methods in class

improve vool test dirs

test/vool/test_return.rb

@@ -0,0 +1,57 @@
+require_relative "helper"
+
+module Vool
+  class TestReturnMom < MiniTest::Test
+    include MomCompile
+    include Mom
+
+    def setup
+      Parfait.boot!
+      @inst = compile_first_method( "return 5")
+    end
+
+    def test_class_compiles
+      assert_equal SlotLoad , @inst.class , @inst
+    end
+    def test_slot_is_set
+      assert @inst.left
+    end
+    def test_two_instructions_are_returned
+      assert_equal 2 ,  @inst.length
+    end
+    def test_second_is_return
+      assert_equal ReturnSequence,  @inst.last.class
+    end
+    def test_slot_starts_at_message
+      assert_equal :message , @inst.left.known_object
+    end
+    def test_slot_gets_return
+      assert_equal :return_value , @inst.left.slots[0]
+    end
+    def test_slot_assigns_something
+      assert @inst.right
+    end
+    def test_slot_assigns_int
+      assert_equal Mom::IntegerConstant ,  @inst.right.known_object.class
+    end
+    def test_array
+      check_array [SlotLoad,ReturnSequence] , @ins
+    end
+  end
+  class TestReturnSendMom < MiniTest::Test
+    include MomCompile
+    include Mom
+
+    def setup
+      Risc.machine.boot
+      @ins = compile_first_method( "return 5.div4")
+    end
+
+    def test_return_is_last
+      assert_equal ReturnSequence , @ins.last.class
+    end
+    def test_array
+      check_array [MessageSetup,ArgumentTransfer,SimpleCall,SlotLoad,SlotLoad,ReturnSequence] , @ins
+    end
+  end
+end