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#
# Copyright 2015 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.
"""Tests for http_wrapper."""
import socket
import unittest
import httplib2
from six.moves import http_client
from mock import patch
from apitools.base.py import exceptions
from apitools.base.py import http_wrapper
# pylint: disable=ungrouped-imports
try:
from oauth2client.client import HttpAccessTokenRefreshError
from oauth2client.client import AccessTokenRefreshError
_TOKEN_REFRESH_STATUS_AVAILABLE = True
except ImportError:
from oauth2client.client import AccessTokenRefreshError
_TOKEN_REFRESH_STATUS_AVAILABLE = False
class _MockHttpRequest(object):
url = None
class _MockHttpResponse(object):
def __init__(self, status_code):
self.response = {'status': status_code}
class RaisesExceptionOnLen(object):
"""Supports length property but raises if __len__ is used."""
def __len__(self):
raise Exception('len() called unnecessarily')
def length(self):
return 1
class HttpWrapperTest(unittest.TestCase):
def testRequestBodyUsesLengthProperty(self):
http_wrapper.Request(body=RaisesExceptionOnLen())
def testRequestBodyWithLen(self):
http_wrapper.Request(body='burrito')
@unittest.skipIf(not _TOKEN_REFRESH_STATUS_AVAILABLE,
'oauth2client<1.5 lacks HttpAccessTokenRefreshError.')
def testExceptionHandlerHttpAccessTokenError(self):
exception_arg = HttpAccessTokenRefreshError(status=503)
retry_args = http_wrapper.ExceptionRetryArgs(
http={'connections': {}}, http_request=_MockHttpRequest(),
exc=exception_arg, num_retries=0, max_retry_wait=0,
total_wait_sec=0)
# Disable time.sleep for this handler as it is called with
# a minimum value of 1 second.
with patch('time.sleep', return_value=None):
http_wrapper.HandleExceptionsAndRebuildHttpConnections(
retry_args)
@unittest.skipIf(not _TOKEN_REFRESH_STATUS_AVAILABLE,
'oauth2client<1.5 lacks HttpAccessTokenRefreshError.')
def testExceptionHandlerHttpAccessTokenErrorRaises(self):
exception_arg = HttpAccessTokenRefreshError(status=200)
retry_args = http_wrapper.ExceptionRetryArgs(
http={'connections': {}}, http_request=_MockHttpRequest(),
exc=exception_arg, num_retries=0, max_retry_wait=0,
total_wait_sec=0)
# Disable time.sleep for this handler as it is called with
# a minimum value of 1 second.
with self.assertRaises(HttpAccessTokenRefreshError):
with patch('time.sleep', return_value=None):
http_wrapper.HandleExceptionsAndRebuildHttpConnections(
retry_args)
def testExceptionHandlerAccessTokenErrorRaises(self):
exception_arg = AccessTokenRefreshError()
retry_args = http_wrapper.ExceptionRetryArgs(
http={'connections': {}}, http_request=_MockHttpRequest(),
exc=exception_arg, num_retries=0, max_retry_wait=0,
total_wait_sec=0)
# Disable time.sleep for this handler as it is called with
# a minimum value of 1 second.
with self.assertRaises(AccessTokenRefreshError):
with patch('time.sleep', return_value=None):
http_wrapper.HandleExceptionsAndRebuildHttpConnections(
retry_args)
def testDefaultExceptionHandler(self):
"""Ensures exception handles swallows (retries)"""
mock_http_content = 'content'.encode('utf8')
for exception_arg in (
http_client.BadStatusLine('line'),
http_client.IncompleteRead('partial'),
http_client.ResponseNotReady(),
socket.error(),
socket.gaierror(),
httplib2.ServerNotFoundError(),
ValueError(),
exceptions.RequestError(),
exceptions.BadStatusCodeError(
{'status': 503}, mock_http_content, 'url'),
exceptions.RetryAfterError(
{'status': 429}, mock_http_content, 'url', 0)):
retry_args = http_wrapper.ExceptionRetryArgs(
http={'connections': {}}, http_request=_MockHttpRequest(),
exc=exception_arg, num_retries=0, max_retry_wait=0,
total_wait_sec=0)
# Disable time.sleep for this handler as it is called with
# a minimum value of 1 second.
with patch('time.sleep', return_value=None):
http_wrapper.HandleExceptionsAndRebuildHttpConnections(
retry_args)