1 files changed, 8 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/blank_test.rb b/activesupport/test/core_ext/blank_test.rb
index a68c074777..3e3176f993 100644
--- a/activesupport/test/core_ext/blank_test.rb
+++ b/activesupport/test/core_ext/blank_test.rb
@@ -4,6 +4,14 @@ require 'abstract_unit'
 require 'active_support/core_ext/object/blank'
 
 class BlankTest < ActiveSupport::TestCase
+  class EmptyTrue
+    def empty?() true; end
+  end
+
+  class EmptyFalse
+    def empty?() false; end
+  end
+
   BLANK = [ EmptyTrue.new, nil, false, '', '   ', "  \n\t  \r ", '　', [], {} ]
   NOT   = [ EmptyFalse.new, Object.new, true, 0, 1, 'a', [nil], { nil => 0 } ]