1 files changed, 6 insertions, 0 deletions
diff --git a/test/channel/base_test.rb b/test/channel/base_test.rb
index bac8569780..7eb8e15845 100644
--- a/test/channel/base_test.rb
+++ b/test/channel/base_test.rb
@@ -139,4 +139,10 @@ class ActionCable::Channel::BaseTest < ActiveSupport::TestCase
     expected = ActiveSupport::JSON.encode "identifier" => "{id: 1}", "message" => { "data" => "latest" }
     assert_equal expected, @connection.last_transmission
   end
+
+  test "subscription confirmation" do
+    expected = ActiveSupport::JSON.encode "identifier" => "{id: 1}", "type" => "confirm_subscription"
+    assert_equal expected, @connection.last_transmission
+  end
+
 end