title: Feature test failing when trying to use "check"
body: <p>I'm new to feature tests and capybara, I have a real simple feature test right now and I can't get it to pass but I believe it's because of something I'm doing wrong writing the test. I'll post my test and let me know if anything jumps out at anyone and is a clear dev error. I think it's something I'm doing with the check?</p>
  
  <pre><code>require "rails_helper"
  
  RSpec.feature "Send a message" do
    scenario "Staff can send a message" do
    visit "/"
  
  group = Group.create!(name: "Group A")
  user = User.create!(email: "staff@example.com", password: "password")
  fill_in "Email", with: "staff@example.com"
  fill_in "Password", with: "password"
  click_button "Sign in"
  
  fill_in "Enter a Message:", with: "Test Message"
  check("message_group_#{group.id}")
  click_button "Send Message"
  
  
  expect(page).to have_content("Messages on their way!")
  end
  </code></pre>
  
  <p>This is the error message I get.</p>
  
  <pre><code>Send a message Staff can send a message
   Failure/Error: expect(page).to have_content("Messages on their way!")
     expected to find text "Messages on their way!" in "Tulip Time Text Numbers Sent Messages Scheduled Messages Statistics staff@example.com Logout SMS Notifications Use this form to send SMS notifications to Visitors, Staff or Volunteers. Enter a Message: Groups: Group A Scheduled Text Message:"
  </code></pre>
  
  <p><code>Message.rb</code></p>
  
  <pre><code>def create
  @message = Message.create(message_params)
  if @message.save
    run_at_time = @message.send_at.present? ? @message.send_at : Time.zone.now
    people = Person.in_groups(message_params[:group_ids])
    if people.any?
      people.each do |person|
        person.delay(run_at: run_at_time).send_message(@message.body)
      end
      flash[:success] = "Messages on their way!"
    end
    redirect_to root_path
  else
    render "new"
  end
  end
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/cwYWp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cwYWp.png" alt="enter image description here"></a></p>