few more enlightening tweaks

koans/about_control_statements.rb

@@ -59,12 +59,20 @@ def test_if_statement_modifiers
 
   def test_unless_statement
     result = :default_value
-    unless false
+    unless false    # same as saying 'if !false', which evaluates as 'if true'
       result = :false_value
     end
     assert_equal __, result
   end
 
+  def test_unless_statement_evaluate_true
+    result = :default_value
+    unless true    # same as saying 'if !true', which evaluates as 'if false'
+      result = :true_value
+    end
+    assert_equal __, result
+  end
+
   def test_unless_statement_modifier
     result = :default_value
     result = :false_value unless false

koans/about_methods.rb

@@ -62,6 +62,7 @@ def method_with_var_args(*args)
   end
 
   def test_calling_with_variable_arguments
+    assert_equal __, method_with_var_args.class
     assert_equal __, method_with_var_args
     assert_equal __, method_with_var_args(:one)
     assert_equal __, method_with_var_args(:one, :two)