Method _test_invalid_env

Lib/test/test_os/test_os.py:3419–3465

(self, spawn)

        self.assertRaises(ValueError, os.spawnve, os.P_NOWAIT, program, [''], {})

    def _test_invalid_env(self, spawn):
        program = sys.executable
        args = self.quote_args([program, '-c', 'pass'])

        # null character in the environment variable name
        newenv = os.environ.copy()
        newenv["FRUIT\0VEGETABLE"] = "cabbage"
        try:
            exitcode = spawn(os.P_WAIT, program, args, newenv)
        except ValueError:
            pass
        else:
            self.assertEqual(exitcode, 127)

        # null character in the environment variable value
        newenv = os.environ.copy()
        newenv["FRUIT"] = "orange\0VEGETABLE=cabbage"
        try:
            exitcode = spawn(os.P_WAIT, program, args, newenv)
        except ValueError:
            pass
        else:
            self.assertEqual(exitcode, 127)

        # equal character in the environment variable name
        newenv = os.environ.copy()
        newenv["FRUIT=ORANGE"] = "lemon"
        try:
            exitcode = spawn(os.P_WAIT, program, args, newenv)
        except ValueError:
            pass
        else:
            self.assertEqual(exitcode, 127)

        # equal character in the environment variable value
        filename = os_helper.TESTFN
        self.addCleanup(os_helper.unlink, filename)
        with open(filename, "w", encoding="utf-8") as fp:
            fp.write('import sys, os\n'
                     'if os.getenv("FRUIT") != "orange=lemon":\n'
                     '    raise AssertionError')

        args = self.quote_args([program, filename])
        newenv = os.environ.copy()
        newenv["FRUIT"] = "orange=lemon"
        exitcode = spawn(os.P_WAIT, program, args, newenv)
        self.assertEqual(exitcode, 0)

    @warnings_helper.ignore_fork_in_thread_deprecation_warnings()
    @requires_os_func('spawnve')