def _get_exception_type(expected_error_code=_DEFAULT_ERROR_CODE):
"""Dynamically calculate the expected exception to be caught.
Dynamically calculate the expected exception to be caught by the test case.
Only ``Forbidden`` and ``NotFound`` exceptions are permitted. ``NotFound``
is supported because Neutron, for security reasons, masks ``Forbidden``
exceptions as ``NotFound`` exceptions.
:param expected_error_code: the integer representation of the expected
exception to be caught. Must be contained in
``_SUPPORTED_ERROR_CODES``.
:returns: tuple of the exception type corresponding to
``expected_error_code`` and a message explaining that a non-Forbidden
exception was expected, if applicable.
"""
expected_exception = None
irregular_msg = None
if not isinstance(expected_error_code, six.integer_types) \
or expected_error_code not in _SUPPORTED_ERROR_CODES:
msg = ("Please pass an expected error code. Currently "
"supported codes: {0}".format(_SUPPORTED_ERROR_CODES))
LOG.error(msg)
raise rbac_exceptions.RbacInvalidErrorCode(msg)
if expected_error_code == 403:
expected_exception = lib_exc.Forbidden
elif expected_error_code == 404:
expected_exception = lib_exc.NotFound
irregular_msg = ("NotFound exception was caught for test %s. Expected "
"policies which may have caused the error: %s. The "
"service %s throws a 404 instead of a 403, which is "
"irregular")
return expected_exception, irregular_msg
def _get_exception_type(expected_error_code):
expected_exception = None
irregular_msg = None
supported_error_codes = [403, 404]
if expected_error_code == 403:
expected_exception = exceptions.Forbidden
elif expected_error_code == 404:
expected_exception = exceptions.NotFound
irregular_msg = ("NotFound exception was caught for policy action "
"{0}. The service {1} throws a 404 instead of a 403, "
"which is irregular.")
else:
msg = ("Please pass an expected error code. Currently "
"supported codes: {0}".format(str(supported_error_codes)))
LOG.error(msg)
raise rbac_exceptions.RbacInvalidErrorCode()
return expected_exception, irregular_msg