Capybara RSpec vs. test adapter

[palkan]

Currently, setting test adapter globally breaks multisession Capybara Action Cable tests.

We can add a share context to use another adapter (e.g. async) for specific tests and (optionally) include it to type: :feature specs:

context "multiple sessions", action_cable: :async do
  scenario "all users see new question in real-time" do
    Capybara.using_session('author') do
      sign_in(user)
      visit questions_path
    end

    Capybara.using_session('guest') do
      visit questions_path
    end

    Capybara.using_session('author') do
      page.find("#add_question_btn").trigger('click')

      fill_in 'Title', with: 'Test question'
      fill_in 'Body', with: 'test text'
      click_on 'Save'
      expect(page).to have_content 'Test question'
      expect(page).to have_content 'test text'
    end

    Capybara.using_session('guest') do
      expect(page).to have_content 'Test question'
      expect(page).to_not have_content 'No questions found('
    end
  end
end