Paste helper for capybara and chromedriver (may work with other drivers)

paste_helper.rb

  def paste_in(field_label, with:)
    field = find_field(field_label)
    selector = "##{field["id"]}"
    script = <<-JS
      dt = new DataTransfer();
      dt.setData("text/plain", '#{with}');
      ev = new ClipboardEvent("paste", { clipboardData: dt });
      $('#{selector}')[0].dispatchEvent(ev)
    JS
    page.execute_script(script)
  end