Add option to omit creating an instance reader method on class_attribute

1 files changed, 6 insertions, 0 deletions

diff --git a/activesupport/test/core_ext/class/attribute_test.rb b/activesupport/test/core_ext/class/attribute_test.rb
index d58b60482b..e290a6e012 100644
--- a/activesupport/test/core_ext/class/attribute_test.rb
+++ b/activesupport/test/core_ext/class/attribute_test.rb
@@ -60,6 +60,12 @@ class ClassAttributeTest < ActiveSupport::TestCase
     assert_raise(NoMethodError) { object.setting = 'boom' }
   end
 
+  test 'disabling instance reader' do
+    object = Class.new { class_attribute :setting, :instance_reader => false }.new
+    assert_raise(NoMethodError) { object.setting }
+    assert_raise(NoMethodError) { object.setting? }
+  end
+
   test 'works well with singleton classes' do
     object = @klass.new
     object.singleton_class.setting = 'foo'