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mock_http.py
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mock_http.py
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#!/usr/bin/python
#
# Copyright (C) 2007, 2008 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.
__author__ = 'davidbyttow@google.com (David Byttow)'
import httplib
import urllib
from opensocial import http
class ResponseRecord(object):
def __init__(self, request, response):
self.request = request
self.response = response
class MockUrlFetch(http.UrlFetch):
"""A mock UrlFetch implementation for unit tests.
Used to set canned responses for particular requests. The default canned
response (Error 500) will be returned if a response is not found.
"""
def __init__(self):
self.records = []
self.default_response = http.Response(httplib.INTERNAL_SERVER_ERROR, '')
def add_response(self, request, response):
"""Adds a canned response for a given request.
Args:
request: An http.Request object used to trigger this response.
response: An http.Response object that will be returned.
"""
self.records.append(ResponseRecord(request, response))
def fetch(self, request):
"""Perform the fake fetch.
Looks up the details of the specified request and returns a canned
response if one is found, otherwise 500 error.
"""
response = self._lookup_request(request)
return response
def _lookup_request(self, request):
url = request.get_url()
for record in self.records:
other_url = record.request.get_url()
if (record.request.get_method() == request.get_method() and
url == other_url and
record.request.post_body == request.post_body):
return record.response
return self.default_response