add a helper to get the vool equivalent of a ruby class

test/ruby/test_statement.rb

@@ -0,0 +1,23 @@
+require_relative "helper"
+
+module Ruby
+  class TestStatement < MiniTest::Test
+    include RubyTests
+
+    def test_class_name
+      assert_equal "Statement" , Statement.new.class_name
+    end
+    def test_brother
+      assert_equal Vool::Statement , Statement.new.vool_brother
+    end
+    def test_yield
+      lst = compile( "yield")
+      assert_equal Vool::YieldStatement , lst.vool_brother
+    end
+    def test_assign
+      lst = compile( "a = 4")
+      assert_equal Vool::LocalAssignment , lst.vool_brother
+    end
+
+  end
+end