old_contents: import pytest
  from web_test_base import *
  
  class TestIATIPreview(WebTestBase):
      requests_to_load = {
          'IATI Preview': {
              'url': 'http://preview.iatistandard.org/'
          }
      }
  
      def test_contains_links(self, loaded_request):
          """
          Test that each page contains links to the defined URLs.
          """
          result = utility.get_links_from_page(loaded_request)
  
          assert "http://www.iatistandard.org/" in result
  
new_contents: import pytest
  from web_test_base import *
  
  class TestIATIPreview(WebTestBase):
      requests_to_load = {
          'IATI Preview': {
              'url': 'http://preview.iatistandard.org/'
          }
      }
  
      def test_contains_links(self, loaded_request):
          """
          Test that each page contains links to the defined URLs.
          """
          result = utility.get_links_from_page(loaded_request)
  
          assert "http://www.iatistandard.org/" in result
  
      @pytest.mark.parametrize("target_request", ["IATI Preview"])
      def test_xml_web_address_form_presence(self, target_request):
          """
          Test that there is a form to enter a URL of a valid XML file on the Preview Tool.
          """
          req = self.loaded_request_from_test_name(target_request)
          form_xpath = '//*[@id="main"]/div/div/div[1]/div/form'
          form_action_xpath = '//*[@id="main"]/div/div/div[1]/div/form/@action'
          form_method_xpath = '//*[@id="main"]/div/div/div[1]/div/form/@method'
          input_xpath = '//*[@id="url"]'
          button_xpath = '//*[@id="main"]/div/div/div[1]/div/form/div/div/span/button'
  
          forms = utility.locate_xpath_result(req, form_xpath)
          form_action = utility.locate_xpath_result(req, form_action_xpath)
          form_method = utility.locate_xpath_result(req, form_method_xpath)
          form_inputs = utility.locate_xpath_result(req, input_xpath)
          form_buttons = utility.locate_xpath_result(req, input_xpath)
  
          assert len(forms) == 1
          assert form_action == ['index.php']
          assert form_method == ['get']
          assert len(form_inputs) == 1
          assert len(form_buttons) == 1
  
subject: Add test for form on Preview Tool