test compatibility layer

test from and to std/parfait objects
for list and word for now
moved some of that code to virtual, out of parfait

test/virtual/test_compat.rb

@@ -0,0 +1,19 @@
+require_relative "../helper"
+
+
+class TestCompat < MiniTest::Test
+
+  def test_list_create_from_array
+    array = [1,2,3]
+    list = Virtual.new_list(array)
+    assert_equal list , Virtual.new_list(array)
+    assert_equal array , list.to_a
+  end
+
+  def test_word_create_from_string
+    string = "something"
+    word = Virtual.new_word(string)
+    assert_equal word , Virtual.new_word(string)
+    assert_equal string , word.to_s
+  end
+end

test/virtual/test_conversion.rb

@@ -50,8 +50,8 @@ class TestConversion < MiniTest::Test
 
   def test_string
     string    = "hello"
-    word = Parfait.new_word string
-    assert_equal word , Parfait.new_word(string)
+    word = Virtual.new_word string
+    assert_equal word , Virtual.new_word(string)
     assert_equal string , word.to_s
   end