Add class to deprecate instance variables

Add ActiveSupport::Deprecation::DeprecatedInstanceVariable class to
deprecate instance variables of primitive types such as stings.

1 files changed, 10 insertions, 0 deletions

diff --git a/activesupport/test/deprecation_test.rb b/activesupport/test/deprecation_test.rb
index ebfa405947..11357e250f 100644
--- a/activesupport/test/deprecation_test.rb
+++ b/activesupport/test/deprecation_test.rb
@@ -149,3 +149,13 @@ class DeprecationTest < Test::Unit::TestCase
     assert_nil @last_message
   end
 end
+
+class DeprecatedIvarTest < Test::Unit::TestCase
+
+  def test_deprecated_ivar
+    @action = ActiveSupport::Deprecation::DeprecatedInstanceVariable.new("fubar", :foobar)
+
+    assert_deprecated(/Instance variable @foobar is deprecated! Call instance method foobar instead/) { assert_equal "fubar", @action }
+  end
+
+end