Miscellany

class HTTP(twisted.web2.dav.test.util.TestCase):    """    HTTP Utilities    """    def test_statusForFailure_errno(self):        """        statusForFailure() for exceptions with known errno values        """        for ex_class in (IOError, OSError):            for exception, result in (                (ex_class(errno.EACCES, "Permission denied" ), responsecode.FORBIDDEN),                (ex_class(errno.EPERM , "Permission denied" ), responsecode.FORBIDDEN),                (ex_class(errno.ENOSPC, "No space available"), responsecode.INSUFFICIENT_STORAGE_SPACE),                (ex_class(errno.ENOENT, "No such file"      ), responsecode.NOT_FOUND),            ):                self._check_exception(exception, result)    def test_statusForFailure_HTTPError(self):        """        statusForFailure() for HTTPErrors        """        for code in responsecode.RESPONSES:            self._check_exception(HTTPError(code), code)            self._check_exception(HTTPError(ErrorResponse(code, ("http://twistedmatrix.com/", "bar"))), code)    def test_statusForFailure_exception(self):        """        statusForFailure() for known exceptions        """        for exception, result in (            (NotImplementedError("Duh..."), responsecode.NOT_IMPLEMENTED),        ):            self._check_exception(exception, result)    def _check_exception(self, exception, result):        try:            raise exception        except Exception, e:            failure = Failure()            status = statusForFailure(failure)            self.failUnless(                status == result,                "Failure %r (%s) generated incorrect status code: %s != %s"                % (failure, failure.value, status, result)            )        else:            raise AssertionError("We shouldn't be here.")