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_testing.py
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113 lines (80 loc) · 3.07 KB
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# Copyright 2014 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Shared testing utilities."""
# Avoid the grpc and google.cloud.grpc collision.
from __future__ import absolute_import
class _Monkey(object):
# context-manager for replacing module names in the scope of a test.
def __init__(self, module, **kw):
self.module = module
if len(kw) == 0: # pragma: NO COVER
raise ValueError('_Monkey was used with nothing to monkey-patch')
self.to_restore = {key: getattr(module, key) for key in kw}
for key, value in kw.items():
setattr(module, key, value)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
for key, value in self.to_restore.items():
setattr(self.module, key, value)
class _NamedTemporaryFile(object):
def __init__(self, suffix=''):
import os
import tempfile
filehandle, self.name = tempfile.mkstemp(suffix=suffix)
os.close(filehandle)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
import os
os.remove(self.name)
def _tempdir_maker():
import contextlib
import shutil
import tempfile
@contextlib.contextmanager
def _tempdir_mgr():
temp_dir = tempfile.mkdtemp()
yield temp_dir
shutil.rmtree(temp_dir)
return _tempdir_mgr
_tempdir = _tempdir_maker()
del _tempdir_maker
class _GAXBaseAPI(object):
_random_gax_error = False
def __init__(self, **kw):
self.__dict__.update(kw)
def _make_grpc_error(self, status_code, trailing=None):
from grpc._channel import _RPCState
from google.cloud.exceptions import GrpcRendezvous
details = 'Some error details.'
exc_state = _RPCState((), None, trailing, status_code, details)
return GrpcRendezvous(exc_state, None, None, None)
def _make_grpc_not_found(self):
from grpc import StatusCode
return self._make_grpc_error(StatusCode.NOT_FOUND)
def _make_grpc_failed_precondition(self):
from grpc import StatusCode
return self._make_grpc_error(StatusCode.FAILED_PRECONDITION)
def _make_grpc_deadline_exceeded(self):
from grpc import StatusCode
return self._make_grpc_error(StatusCode.DEADLINE_EXCEEDED)
class _GAXPageIterator(object):
def __init__(self, *pages, **kwargs):
self._pages = iter(pages)
self.page_token = kwargs.get('page_token')
def next(self):
import six
return six.next(self._pages)
__next__ = next