remove duplicate tests

test/mom/helper.rb

@@ -1 +1,80 @@
-require_relative "../helper"
+require_relative '../helper'
+
+module Risc
+  module SpaceHack
+    # test hack to in place change object type
+    def add_space_field(name,type)
+      class_type = Parfait.object_space.get_class_by_name(:Space).instance_type
+      class_type.send(:private_add_instance_variable, name , type)
+    end
+  end
+  module ExpressionHelper
+    include SpaceHack
+
+    def check
+      Risc.machine.boot unless Risc.machine.booted
+      compiler = Vm::MethodCompiler.new Parfait.object_space.get_main
+      code = Vm.ast_to_code @input
+      assert code.to_s , @input
+      produced = compiler.process( code )
+      assert @output , "No output given"
+      assert_equal produced.class , @output , "Wrong class"
+      produced
+    end
+
+  end
+
+  module Statements
+    include AST::Sexp
+    include CleanCompile
+    include SpaceHack
+
+    def setup
+      Risc.machine.boot # force boot to reset main
+    end
+
+    def preamble
+      [Label, LoadConstant, SlotToReg, RegToSlot ]
+    end
+    def postamble
+      [ Label, FunctionReturn]
+    end
+    def check_nil
+      assert @expect , "No output given"
+      Vool::VoolCompiler.ruby_to_vool "class Space; def main(arg);#{@input};end;end"
+      produced = Parfait.object_space.get_main.instructions
+      compare_instructions produced , @expect
+    end
+    def check_return
+      was = check_nil
+      raise was if was
+      Parfait.object_space.get_main.instructions
+    end
+
+    def compare_instructions( instruction , expect )
+      index = 0
+      all = instruction.to_arr
+      full_expect = preamble + expect + postamble
+      #full_expect =  expect
+      begin
+        should = full_expect[index]
+        return "No instruction at #{index}\n#{should(all)}" unless should
+        return "Expected at #{index+1}\n#{should(all)}" unless instruction.class == should
+        puts instruction.to_s
+        index += 1
+        instruction = instruction.next
+      end while( instruction )
+      nil
+    end
+    def should( all )
+      preamble.each {all.shift}
+      postamble.each {all.pop}
+      str = all.to_s.gsub("Risc::","")
+      ret = ""
+      str.split(",").each_slice(6).each do |line|
+        ret += "                " + line.join(",") + " ,\n"
+      end
+      ret
+    end
+  end
+end