diff --git a/test/virtual/test_methods.rb b/test/virtual/test_methods.rb
index 5066c9a9..0dbd8f69 100644
--- a/test/virtual/test_methods.rb
+++ b/test/virtual/test_methods.rb
@@ -68,7 +68,7 @@ def fibonaccit(n)
   end
 end
 HERE
-    @output = "---RETURN_MARKER- !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :fibonaccitRETURN_MARKER  args:RETURN_MARKER  - !ruby/object:Virtual::ArgumentRETURN_MARKER    name: :nRETURN_MARKER    type: !ruby/object:Virtual::Mystery {}RETURN_MARKER  locals:RETURN_MARKER  - !ruby/object:Virtual::LocalRETURN_MARKER    name: :aRETURN_MARKER    type: &6 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 0RETURN_MARKER  - &4 !ruby/object:Virtual::LocalRETURN_MARKER    name: :someRETURN_MARKER    type: &5 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 43RETURN_MARKER  - &1 !ruby/object:Virtual::LocalRETURN_MARKER    name: :otherRETURN_MARKER    type: &3 !ruby/object:Virtual::ReturnRETURN_MARKER      name: :returnRETURN_MARKER      type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfReferenceRETURN_MARKER    clazz: RETURN_MARKER  return_type: *1RETURN_MARKER  start: !ruby/object:Virtual::MethodEnterRETURN_MARKER    next: !ruby/object:Virtual::FrameSetRETURN_MARKER      next: &2 !ruby/object:Virtual::LabelRETURN_MARKER        next: !ruby/object:Virtual::FrameGetRETURN_MARKER          next: !ruby/object:Virtual::ImplicitBranchRETURN_MARKER            next: !ruby/object:Virtual::FrameSetRETURN_MARKER              next: !ruby/object:Virtual::FrameGetRETURN_MARKER                next: !ruby/object:Virtual::LoadSelfRETURN_MARKER                  next: !ruby/object:Virtual::FrameSendRETURN_MARKER                    next: !ruby/object:Virtual::FrameSetRETURN_MARKER                      next: *2RETURN_MARKER                      name: :otherRETURN_MARKER                      value: *3RETURN_MARKER                    name: :*RETURN_MARKER                    args:RETURN_MARKER                    - !ruby/object:Virtual::IntegerConstantRETURN_MARKER                      integer: 4RETURN_MARKER                  value: *4RETURN_MARKER                name: :someRETURN_MARKER              name: :someRETURN_MARKER              value: *5RETURN_MARKER            name: :while_1RETURN_MARKER            other: &7 !ruby/object:Virtual::LabelRETURN_MARKER              next: RETURN_MARKER              name: :while_1RETURN_MARKER          name: :nRETURN_MARKER        name: while_startRETURN_MARKER      name: :aRETURN_MARKER      value: *6RETURN_MARKER  current: *7RETURN_MARKER"
+    @output = "---RETURN_MARKER- !ruby/object:Virtual::MethodDefinitionRETURN_MARKER  name: :fibonaccitRETURN_MARKER  args:RETURN_MARKER  - !ruby/object:Virtual::ArgumentRETURN_MARKER    name: :nRETURN_MARKER    type: !ruby/object:Virtual::Mystery {}RETURN_MARKER  locals:RETURN_MARKER  - !ruby/object:Virtual::LocalRETURN_MARKER    name: :aRETURN_MARKER    type: &2 !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 0RETURN_MARKER  - !ruby/object:Virtual::LocalRETURN_MARKER    name: :someRETURN_MARKER    type: !ruby/object:Virtual::IntegerConstantRETURN_MARKER      integer: 43RETURN_MARKER  - &1 !ruby/object:Virtual::LocalRETURN_MARKER    name: :otherRETURN_MARKER    type: !ruby/object:Virtual::ReturnRETURN_MARKER      name: :returnRETURN_MARKER      type: !ruby/class 'Virtual::Mystery'RETURN_MARKER  tmps: []RETURN_MARKER  receiver: !ruby/object:Virtual::SelfReferenceRETURN_MARKER    clazz: RETURN_MARKER  return_type: *1RETURN_MARKER  start: !ruby/object:Virtual::MethodEnterRETURN_MARKER    next: !ruby/object:Virtual::FrameSetRETURN_MARKER      name: :aRETURN_MARKER      value: *2RETURN_MARKER      next: !ruby/object:Virtual::LabelRETURN_MARKER        name: while_startRETURN_MARKER        next: !ruby/object:Virtual::MethodReturnRETURN_MARKER          next: RETURN_MARKER  current: !ruby/object:Virtual::LabelRETURN_MARKER    name: :while_39010RETURN_MARKER    next: RETURN_MARKER"
     check
   end
 
@@ -106,7 +106,7 @@ def retvar(n)
   end 
 end
 HERE
-    @output = [Virtual::MethodDefinition.new(:foo,[Ast::NameExpression.new(:x)])]
+    @output = ""
     check
   end
 
diff --git a/test/virtual/virtual_helper.rb b/test/virtual/virtual_helper.rb
index bfa8fa63..c34a290d 100644
--- a/test/virtual/virtual_helper.rb
+++ b/test/virtual/virtual_helper.rb
@@ -1,6 +1,5 @@
 require_relative '../helper'
 require 'parslet/convenience'
-require "yaml"
 
 module VirtualHelper
   # need a code generator, for arm 
@@ -20,3 +19,18 @@ module VirtualHelper
   end
   
 end
+
+require "yaml"   # not my first choice, but easy with graphs
+# for readability of the yaml output :next of instructions last
+
+Psych::Visitors::YAMLTree.class_eval do
+  private
+  def dump_ivars target
+    ivars = find_ivars target
+    ivars << :@next if ivars.delete(:@next)
+    ivars.each do |iv|
+      @emitter.scalar("#{iv.to_s.sub(/^@/, '')}", nil, nil, true, false, Psych::Nodes::Scalar::ANY)
+      accept target.instance_variable_get(iv)
+    end
+  end
+end