some class send test changes

also ivar, which is still wip

test/vool/class_send/test_class_instance.rb

@@ -0,0 +1,41 @@
+require_relative "helper"
+
+module Vool
+  class TestClassInstance < MiniTest::Test
+    include Mom
+    include VoolCompile
+
+    def class_main
+      <<-eos
+        class Space
+          def self.some_inst
+            return @inst
+          end
+          def main(arg)
+            return Space.one_plus
+          end
+        end
+      eos
+    end
+
+    def setup
+      source = "class Integer;def +(other);X.int_operator(:+);end;end;" + class_main
+      ret = RubyX::RubyXCompiler.new(RubyX.default_test_options).ruby_to_mom(source)
+      @ins = ret.compilers.find{|c|c.callable.name==:some_inst}.mom_instructions.next
+    end
+    def test_array
+      check_array   [SlotLoad, ReturnJump, Label, ReturnSequence, Label]  , @ins
+    end
+    def test_load_inst
+      assert_equal SlotLoad,  @ins.class
+    end
+    def test_left
+      assert_equal SlotDefinition , @ins.left.class
+      assert_equal [:return_value] , @ins.left.slots
+    end
+    def test_right
+      assert_equal SlotDefinition , @ins.right.class
+      assert_equal [:receiver , :inst] , @ins.right.slots
+    end
+  end
+end