text: import os
  
  from cwltool.main import main
  
  from .util import get_data, windows_needs_docker
  
  
  @windows_needs_docker
  def test_missing_enable_ext() -> None:
      # Requires --enable-ext and --enable-dev
      try:
          opt = os.environ.get("CWLTOOL_OPTIONS")
  
          if "CWLTOOL_OPTIONS" in os.environ:
              del os.environ["CWLTOOL_OPTIONS"]
          assert main([get_data("tests/wf/generator/zing.cwl"), "--zing", "zipper"]) == 1
  
          assert (
              main(
                  [
                      "--enable-ext",
                      "--enable-dev",
                      get_data("tests/wf/generator/zing.cwl"),
                      "--zing",
                      "zipper",
                  ]
              )
              == 0
          )
  
          os.environ["CWLTOOL_OPTIONS"] = "--enable-ext --enable-dev"
          assert main([get_data("tests/wf/generator/zing.cwl"), "--zing", "zipper"]) == 0
      finally:
          if opt is not None:
              os.environ["CWLTOOL_OPTIONS"] = opt
          elif "CWLTOOL_OPTIONS" in os.environ:
              del os.environ["CWLTOOL_OPTIONS"]
  