new_contents: import pytest
  
  def test_sip():
      """Test the qtpy.sip namespace"""
      sip = pytest.importorskip("qtpy.sip")
  
      assert sip.assign is not None
      assert sip.cast is not None
      assert sip.delete is not None
      assert sip.dump is not None
      assert sip.enableautoconversion is not None
      assert sip.isdeleted is not None
      assert sip.ispycreated is not None
      assert sip.ispyowned is not None
      assert sip.setdeleted is not None
      assert sip.settracemask is not None
      assert sip.simplewrapper is not None
      assert sip.transferback is not None
      assert sip.transferto is not None
      assert sip.unwrapinstance is not None
      assert sip.voidptr is not None
      assert sip.wrapinstance is not None
      assert sip.wrapper is not None
      assert sip.wrappertype is not None
  
subject: Add tests for sip module