class HTTP(twisted.web2.dav.test.util.TestCase):
    """
    HTTP Utilities
    """
    def test_statusForFailure(self):
        def check(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:
                self.fail("We shouldn't be here.")

        # Handle known errno cases in either IOError or OSError exceptions
        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),
            ):
                check(exception, result)

        # Handle HTTP errors
        for code in responsecode.RESPONSES:
            check(HTTPError(code), code)
            check(HTTPError(ErrorResponse(code, ("http://twistedmatrix.com/", "bar"))), code)

        # Handle known exception classes
        for exception, result in (
            (NotImplementedError("Duh..."), responsecode.NOT_IMPLEMENTED),
        ):
            check(exception, result)