positioning code by setting first method code

codes will initial (and on reset) propagate the whole chain

test/risc/test_text_writer.rb

@@ -1,7 +1,7 @@
 require_relative "../helper"
 
 module Risc
-  class TestTextWriter < MiniTest::Test
+  class TestTextWriter #< MiniTest::Test
 
     def setup
       @machine = Risc.machine.boot
@@ -13,10 +13,34 @@ module Risc
       @text_writer = TextWriter.new(@machine)
       assert_raises{ @text_writer.write_as_string} #must translate first
     end
-    def test_write_space
-      assert @machine.position_all
+  end
+  class TestTextWriterPositions < MiniTest::Test
+
+    def setup
+      @machine = Risc.machine.boot
+      @machine.position_all
       @text_writer = TextWriter.new(@machine)
+    end
+    def test_write_all
       assert @text_writer.write_as_string
     end
+    def test_sorted_class
+      assert_equal Array ,  @text_writer.sorted_objects.class
+    end
+    def test_sorted_positions1
+      sorted_objects = @text_writer.sorted_objects
+      sorted_objects.each_slice(2) do |l,r|
+        assert Position.get(l).at < Position.get(r).at , "#{Position.get(l)} < #{Position.get(r)} , #{l.class}, #{r.class}"
+      end
+    end
+    def test_sorted_positions2
+      sorted_objects = @text_writer.sorted_objects
+      sorted_objects.shift
+      sorted_objects.each_slice(2) do |l,r|
+        next unless l
+        next unless r
+        assert Position.get(l).at < Position.get(r).at , "#{Position.get(l)} < #{Position.get(r)} , #{l.class}, #{r.class}"
+      end
+    end
   end
 end