fix the list after object fixes

start index at 1, but don’t overwrite layout,
so add one

test/parfait/test_list.rb

@@ -9,36 +9,36 @@ class TestList < MiniTest::Test
     assert @list.empty?
   end
   def test_list_len
-    assert_equal 0 , @list.length
+    assert_equal 0 , @list.get_length
   end
   def test_empty_list_doesnt_return
     assert_equal nil , @list.get(3)
   end
-  def test_one_set0
-    assert_equal 1 , @list.set(0,1)
-  end
-  def test_set0_len
-    @list.set(0,1)
-    assert_equal 1 , @list.length
-  end
   def test_one_set1
-    assert_equal :some , @list.set(1,:some)
+    assert_equal 1 , @list.set(1,1)
   end
   def test_set1_len
-    @list.set(1,:some)
-    assert_equal 2 , @list.length
+    @list.set(1,1)
+    assert_equal 1 , @list.get_length
+  end
+  def test_one_set2
+    assert_equal :some , @list.set(2,:some)
+  end
+  def test_set2_len
+    @list.set(2,:some)
+    assert_equal 2 , @list.get_length
   end
   def test_two_sets
-    assert_equal 1 , @list.set(0,1)
+    assert_equal 1 , @list.set(1,1)
     assert_equal :some , @list.set(1,:some)
   end
   def test_one_get1
-    test_one_set0
-    assert_equal 1 , @list.get(0)
+    test_one_set1
+    assert_equal 1 , @list.get(1)
   end
   def test_one_get2
-    test_one_set1
-    assert_equal :some , @list.get(1)
+    test_one_set2
+    assert_equal :some , @list.get(2)
   end
   def test_many_get
     shouldda  = { 1 => :one , 2 => :two , 3 => :three}