move parfait up one, as per its module structure

test/parfait/test_message.rb

@@ -0,0 +1,27 @@
+require_relative "../helper"
+
+class TestMessage < MiniTest::Test
+
+  def setup
+    Register.machine.boot
+    @space = Parfait.object_space
+    @mess = @space.first_message
+  end
+
+  def test_length
+    assert_equal 9 , @mess.get_type.instance_length , @mess.get_type.inspect
+  end
+
+  def test_attribute_set
+    @mess.set_receiver( 55)
+    assert_equal 55 , @mess.receiver
+  end
+
+  def test_indexed
+    assert_equal 9 , @mess.get_type.variable_index(:arguments)
+  end
+
+  def test_next
+    assert @mess.next_message
+  end
+end