module ActionCable::TestHelper

def after_teardown # :nodoc:

:nodoc: 
def after_teardown # :nodoc:
  super
  ActionCable.server.instance_variable_set(:@pubsub, @old_pubsub_adapter)
end

def assert_broadcast_on(stream, data, &block)


end
end
ActionCable.server.broadcast 'messages', text: 'hello'
assert_broadcast_on('messages', text: 'hello') do
def test_assert_broadcast_on_again

If a block is passed, that block should cause a message with the specified data to be sent.

end
assert_broadcast_on('messages', text: 'hello')
ActionCable.server.broadcast 'messages', text: 'hello'
def test_assert_transmitted_message

Asserts that the specified message has been sent to the stream. 
def assert_broadcast_on(stream, data, &block)
  # Encode to JSON and back–we want to use this value to compare
  # with decoded JSON.
  # Comparing JSON strings doesn't work due to the order if the keys.
  serialized_msg =
    ActiveSupport::JSON.decode(ActiveSupport::JSON.encode(data))
  new_messages = broadcasts(stream)
  if block_given?
    old_messages = new_messages
    clear_messages(stream)
    assert_nothing_raised(&block)
    new_messages = broadcasts(stream)
    clear_messages(stream)
    # Restore all sent messages
    (old_messages + new_messages).each { |m| pubsub_adapter.broadcast(stream, m) }
  end
  message = new_messages.find { |msg| ActiveSupport::JSON.decode(msg) == serialized_msg }
  assert message, "No messages sent with #{data} to #{stream}"
end

def assert_broadcasts(stream, number, &block)


end
end
ActionCable.server.broadcast 'messages', { text: 'how are you?' }
ActionCable.server.broadcast 'messages', { text: 'hi' }
assert_broadcasts('messages', 2) do

end
ActionCable.server.broadcast 'messages', { text: 'hello' }
assert_broadcasts('messages', 1) do
def test_broadcasts_again

messages to be broadcasted.
If a block is passed, that block should cause the specified number of

end
assert_broadcasts 'messages', 2
ActionCable.server.broadcast 'messages', { text: 'world' }
assert_broadcasts 'messages', 1
ActionCable.server.broadcast 'messages', { text: 'hello' }
assert_broadcasts 'messages', 0
def test_broadcasts

Asserts that the number of broadcasted messages to the stream matches the given number. 
def assert_broadcasts(stream, number, &block)
  if block_given?
    original_count = broadcasts_size(stream)
    assert_nothing_raised(&block)
    new_count = broadcasts_size(stream)
    actual_count = new_count - original_count
  else
    actual_count = broadcasts_size(stream)
  end
  assert_equal number, actual_count, "#{number} broadcasts to #{stream} expected, but #{actual_count} were sent"
end

def assert_no_broadcasts(stream, &block)


assert_broadcasts 'messages', 0, &block

Note: This assertion is simply a shortcut for:

end
end
# No job messages should be sent from this block
assert_no_broadcasts 'messages' do
def test_broadcasts_again

If a block is passed, that block should not cause any message to be sent.

end
assert_broadcasts 'messages', 1
ActionCable.server.broadcast 'messages', { text: 'hi' }
assert_no_broadcasts 'messages'
def test_no_broadcasts

Asserts that no messages have been sent to the stream. 
def assert_no_broadcasts(stream, &block)
  assert_broadcasts stream, 0, &block
end

def before_setup # :nodoc:

:nodoc: 
def before_setup # :nodoc:
  server = ActionCable.server
  test_adapter = ActionCable::SubscriptionAdapter::Test.new(server)
  @old_pubsub_adapter = server.pubsub
  server.instance_variable_set(:@pubsub, test_adapter)
  super
end

def broadcasts_size(channel) 

def broadcasts_size(channel)
  broadcasts(channel).size
end

def pubsub_adapter # :nodoc:

:nodoc: 
def pubsub_adapter # :nodoc:
  ActionCable.server.pubsub
end