1 files changed, 8 insertions, 16 deletions
diff --git a/actioncable/test/test_helper.rb b/actioncable/test/test_helper.rb
index 65b45e0c89..8ddbd4e764 100644
--- a/actioncable/test/test_helper.rb
+++ b/actioncable/test/test_helper.rb
@@ -13,24 +13,16 @@ require 'rack/mock'
 # Require all the stubs and models
 Dir[File.dirname(__FILE__) + '/stubs/*.rb'].each {|file| require file }
 
-require 'faye/websocket'
-class << Faye::WebSocket
-  remove_method :ensure_reactor_running
-
-  # We don't want Faye to start the EM reactor in tests because it makes testing much harder.
-  # We want to be able to start and stop EM loop in tests to make things simpler.
-  def ensure_reactor_running
-    # no-op
+class ActionCable::TestCase < ActiveSupport::TestCase
+  def wait_for_async
+    e = Concurrent.global_io_executor
+    until e.completed_task_count == e.scheduled_task_count
+      sleep 0.1
+    end
   end
-end
 
-class ActionCable::TestCase < ActiveSupport::TestCase
   def run_in_eventmachine
-    EM.run do
-      yield
-
-      EM.run_deferred_callbacks
-      EM.stop
-    end
+    yield
+    wait_for_async
   end
 end