You can unsubscribe a subscriber

1 files changed, 13 insertions, 1 deletions

diff --git a/activesupport/test/notifications_test.rb b/activesupport/test/notifications_test.rb
index 779771553c..baee779b8a 100644
--- a/activesupport/test/notifications_test.rb
+++ b/activesupport/test/notifications_test.rb
@@ -6,7 +6,7 @@ module Notifications
       ActiveSupport::Notifications.notifier = nil
       @notifier = ActiveSupport::Notifications.notifier
       @events = []
-      @notifier.subscribe { |*args| @events << event(*args) }
+      @subscription = @notifier.subscribe { |*args| @events << event(*args) }
     end
 
     private
@@ -19,6 +19,18 @@ module Notifications
       end
   end
 
+  class UnsubscribeTest < TestCase
+    def unsubscribing_removes_a_subscription
+      @notifier.publish :foo
+      @notifier.wait
+      assert_equal [[:foo]], @events
+      @notifier.unsubscribe(@subscription)
+      @notifier.publish :bar
+      @notifier.wait
+      assert_equal [[:foo]], @events
+    end
+  end
+
   class SyncPubSubTest < TestCase
     def test_events_are_published_to_a_listener
       @notifier.publish :foo