start a new ruby layer to do the to_vool conversion

the "normalization" is getting more and more complicated and is not tested
And it seems i really don't like working with the untyped ast

test/ruby/test_logical_statement.rb

@@ -0,0 +1,41 @@
+require_relative "helper"
+
+module Ruby
+  class TestLogicalX < MiniTest::Test
+    include RubyTests
+
+    def simple
+      compile( "@a and @b")
+    end
+    def test_simple
+      lst = simple
+      assert_equal LogicalStatement , lst.class
+    end
+    def test_simple_name
+      lst = simple
+      assert_equal :and , lst.name
+    end
+    def test_simple_left
+      lst = simple
+      assert_equal InstanceVariable , lst.left.class
+    end
+    def test_simple_right
+      lst = simple
+      assert_equal InstanceVariable , lst.right.class
+    end
+
+    def test_or
+      lst = compile( "@a or @b")
+      assert_equal :or , lst.name
+    end
+
+    def test_or2
+      lst = compile( "@a || @b")
+      assert_equal :or , lst.name
+    end
+    def test_and2
+      lst = compile( "@a && @b")
+      assert_equal :and , lst.name
+    end
+  end
+end