old_contents: import pytest
  
  from bonsai.utils import escape_filter_exp
  from bonsai.utils import escape_attribute_value
  
  
  def test_escape_attribute_value():
      """ Test escaping special characters in attribute values. """
      assert (
          escape_attribute_value(" dummy=test,something+somethingelse")
          == r"\ dummy\=test\,something\+somethingelse"
      )
      assert escape_attribute_value("#dummy=test ") == r"\#dummy\=test\ "
      assert escape_attribute_value(r"term\0") == r"term\\0"
  
  
  def test_escape_filter_exp():
      """ Test escaping filter expressions. """
      assert escape_filter_exp("(parenthesis)") == "\\28parenthesis\\29"
      assert escape_filter_exp("cn=*") == "cn=\\2A"
      assert escape_filter_exp("\\backslash") == "\\5Cbackslash"
      assert escape_filter_exp("term\0") == "term\\0"
  
new_contents: import pytest
  
  from bonsai.utils import escape_filter_exp
  from bonsai.utils import escape_attribute_value
  from bonsai.utils import set_connect_async
  
  
  def test_escape_attribute_value():
      """ Test escaping special characters in attribute values. """
      assert (
          escape_attribute_value(" dummy=test,something+somethingelse")
          == r"\ dummy\=test\,something\+somethingelse"
      )
      assert escape_attribute_value("#dummy=test ") == r"\#dummy\=test\ "
      assert escape_attribute_value(r"term\0") == r"term\\0"
  
  
  def test_escape_filter_exp():
      """ Test escaping filter expressions. """
      assert escape_filter_exp("(parenthesis)") == "\\28parenthesis\\29"
      assert escape_filter_exp("cn=*") == "cn=\\2A"
      assert escape_filter_exp("\\backslash") == "\\5Cbackslash"
      assert escape_filter_exp("term\0") == "term\\0"
  
  
  def test_set_async_connect(client):
      """ Dummy test for set_connect_async. """
      with pytest.raises(TypeError):
          set_connect_async("true")
      set_connect_async(False)
      conn = client.connect()
      assert conn is not None
subject: Add simple call test for set_connect_async