You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: room_channel_test.rb
    path of file: ./repos/plots2/test/action_cable/unit
    
    the code of the file until where you have to start completion: require 'test_helper'
require 'byebug'
class RoomChannelTest < ActionCable::Channel::TestCase
  def test_subscription_to_room_channel
    # Simulate a subscription creation to room_channel
    subscribe

    # Asserts that the subscription was successfully created
    assert subscription.confirmed?

    # Asserts that the channel subscribes connection to a stream
    assert_has_stream "room_c
    
  def test_performed_speak__with_broadcasts_for_admin_user
    # Simulate a subscription creation to room_channel
    stub_connection(current_user: users(:jeff))

    # Simulate a subscription creation to room_channel
    subscribe

    # Asserts that the subscription was successfully created
    assert subscription.confirmed?

    # Asserts that the channel subscribes connection to a stream
    assert_has_stream "room_channel"

    message = "Room Channel Tests"

    assert_broadcast_on "room_channel", message: message do
      perform :speak, message: message
    end

  end