old_contents: 
  import os
  from xml.etree import ElementTree
  from utils import with_app, pretty_print_xml
  
  
  #=============================================================================
  # Tests
  
  @with_app(buildername="xml", srcdir="basics")
  def test_basics(app, status, warning):
      app.build()
      tree = ElementTree.parse(app.outdir / "index.xml")
      pretty_print_xml(tree.getroot())
  
      # Verify that 2 traceables are found.
      assert len(tree.findall(".//target")) == 2
      assert len(tree.findall(".//index")) == 2
      assert len(tree.findall(".//admonition")) == 2
      assert len(tree.findall(".//admonition")) == 2
  
      # Verify that child-parent relationship are made.
      assert len(tree.findall(".//field_list")) == 2
      parent_fields, child_fields = tree.findall(".//field_list")
      for field in parent_fields:
          field_name = field.findall("./field_name")[0]
          if field_name.text == "child":
              break
      else:
          assert False, "Parent's child field not found!"
      for field in child_fields:
          field_name = field.findall("./field_name")[0]
          if field_name.text == "parent":
              break
      else:
          assert False, "Child's parent field not found!"
  
      # Verify that a warning is emitted for unknown traceable tag.
      assert (warning.getvalue().find(
          "WARNING: Traceables: no traceable with tag"
          " 'NONEXISTENT' found!") > 0)
  
new_contents: 
  import os
  from xml.etree import ElementTree
  from utils import with_app, pretty_print_xml
  
  
  #=============================================================================
  # Tests
  
  @with_app(buildername="xml", srcdir="basics")
  def test_basics(app, status, warning):
      app.build()
      tree = ElementTree.parse(app.outdir / "index.xml")
  
      # Verify that 2 traceables are found.
      assert len(tree.findall(".//target")) == 2
      assert len(tree.findall(".//index")) == 2
      assert len(tree.findall(".//admonition")) == 2
      assert len(tree.findall(".//admonition")) == 2
  
      # Verify that child-parent relationship are made.
      assert len(tree.findall(".//field_list")) == 2
      parent_fields, child_fields = tree.findall(".//field_list")
      for field in parent_fields:
          field_name = field.findall("./field_name")[0]
          if field_name.text == "child":
              break
      else:
          assert False, "Parent's child field not found!"
      for field in child_fields:
          field_name = field.findall("./field_name")[0]
          if field_name.text == "parent":
              break
      else:
          assert False, "Child's parent field not found!"
  
      # Verify that a warning is emitted for unknown traceable tag.
      assert (warning.getvalue().find(
          "WARNING: Traceables: no traceable with tag"
          " 'NONEXISTENT' found!") > 0)
  
subject: Remove debug printing from test case