fixed simple layout offset bug in layout

test/parfait/test_attributes.rb

@@ -0,0 +1,49 @@
+require_relative "../helper"
+
+class TestAttributes < MiniTest::Test
+
+  def setup
+    @mess = Virtual.machine.boot.space.first_message
+    @layout = @mess.get_layout
+  end
+
+  def test_message_get_layout
+    assert_equal Parfait::Layout , @layout.class
+  end
+  def test_message_layout_first
+    @layout.object_class = :next_message
+    assert_equal :next_message , @layout.object_instance_names.first
+    assert_equal :next_message , @layout.object_class
+  end
+  def test_message_name_nil
+    last = @layout.object_instance_names.last
+    assert_equal :name , last
+    assert_equal nil , @mess.name
+  end
+  def test_message_next_set
+    @mess.next_message = :next_message
+    assert_equal :next_message , @mess.next_message
+  end
+  def test_message_layout_set
+    @mess.set_layout :layout
+    assert_equal :layout , @mess.get_layout
+  end
+  def test_attribute_index
+    @mess.next_message = :message
+    assert_equal Parfait::Layout , @mess.get_layout.class
+  end
+  def test_layout_attribute
+    @layout.object_class = :message
+    assert_equal :message , @layout.object_class
+  end
+  def test_layout_attribute_check
+    @layout.object_class = :message
+    assert_equal Parfait::Layout , @layout.get_layout.class
+  end
+  def test_layout_layout
+    assert_equal Parfait::Layout , @layout.get_layout.get_layout.class
+  end
+  def test_layout_layout_layout
+    assert_equal Parfait::Layout , @layout.get_layout.get_layout.get_layout.class
+  end
+end