3ee3d6b5f3
We now have automatic HEAD processing always (previously required ConditionalGetMiddleware), middleware benefits from the Location header rewrite, so they can use relative URLs as well, and responses with response codes 1xx, 204 or 304 will always have their content removed, in accordance with the HTTP spec (so it's much harder to indavertently deliver invalid responses). Based on a patch and diagnosis from regexbot@gmail.com. git-svn-id: http://code.djangoproject.com/svn/django/trunk@6662 bcc190cf-cafb-0310-a4f2-bffc1f526a37
279 lines
10 KiB
Python
279 lines
10 KiB
Python
import datetime
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import sys
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from cStringIO import StringIO
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from urlparse import urlparse
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from django.conf import settings
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from django.contrib.auth import authenticate, login
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from django.core.handlers.base import BaseHandler
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from django.core.handlers.wsgi import WSGIRequest
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from django.core.signals import got_request_exception
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from django.dispatch import dispatcher
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from django.http import SimpleCookie, HttpRequest
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from django.template import TemplateDoesNotExist
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from django.test import signals
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from django.utils.functional import curry
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from django.utils.encoding import smart_str
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from django.utils.http import urlencode
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from django.utils.itercompat import is_iterable
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BOUNDARY = 'BoUnDaRyStRiNg'
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MULTIPART_CONTENT = 'multipart/form-data; boundary=%s' % BOUNDARY
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class ClientHandler(BaseHandler):
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"""
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A HTTP Handler that can be used for testing purposes.
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Uses the WSGI interface to compose requests, but returns
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the raw HttpResponse object
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"""
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def __call__(self, environ):
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from django.conf import settings
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from django.core import signals
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# Set up middleware if needed. We couldn't do this earlier, because
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# settings weren't available.
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if self._request_middleware is None:
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self.load_middleware()
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dispatcher.send(signal=signals.request_started)
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try:
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request = WSGIRequest(environ)
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response = self.get_response(request)
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# Apply response middleware
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for middleware_method in self._response_middleware:
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response = middleware_method(request, response)
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response = self.apply_response_fixes(request, response)
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finally:
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dispatcher.send(signal=signals.request_finished)
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return response
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def store_rendered_templates(store, signal, sender, template, context):
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"A utility function for storing templates and contexts that are rendered"
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store.setdefault('template',[]).append(template)
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store.setdefault('context',[]).append(context)
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def encode_multipart(boundary, data):
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"""
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A simple method for encoding multipart POST data from a dictionary of
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form values.
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The key will be used as the form data name; the value will be transmitted
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as content. If the value is a file, the contents of the file will be sent
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as an application/octet-stream; otherwise, str(value) will be sent.
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"""
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lines = []
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to_str = lambda s: smart_str(s, settings.DEFAULT_CHARSET)
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for (key, value) in data.items():
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if isinstance(value, file):
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lines.extend([
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'--' + boundary,
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'Content-Disposition: form-data; name="%s"; filename="%s"' % (to_str(key), to_str(value.name)),
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'Content-Type: application/octet-stream',
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'',
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value.read()
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])
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else:
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if not isinstance(value, basestring) and is_iterable(value):
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for item in value:
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lines.extend([
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'--' + boundary,
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'Content-Disposition: form-data; name="%s"' % to_str(key),
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'',
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to_str(item)
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])
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else:
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lines.extend([
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'--' + boundary,
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'Content-Disposition: form-data; name="%s"' % to_str(key),
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'',
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to_str(value)
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])
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lines.extend([
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'--' + boundary + '--',
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'',
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])
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return '\r\n'.join(lines)
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class Client:
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"""
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A class that can act as a client for testing purposes.
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It allows the user to compose GET and POST requests, and
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obtain the response that the server gave to those requests.
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The server Response objects are annotated with the details
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of the contexts and templates that were rendered during the
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process of serving the request.
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Client objects are stateful - they will retain cookie (and
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thus session) details for the lifetime of the Client instance.
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This is not intended as a replacement for Twill/Selenium or
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the like - it is here to allow testing against the
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contexts and templates produced by a view, rather than the
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HTML rendered to the end-user.
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"""
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def __init__(self, **defaults):
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self.handler = ClientHandler()
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self.defaults = defaults
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self.cookies = SimpleCookie()
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self.exc_info = None
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def store_exc_info(self, *args, **kwargs):
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"""
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Utility method that can be used to store exceptions when they are
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generated by a view.
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"""
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self.exc_info = sys.exc_info()
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def _session(self):
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"Obtain the current session variables"
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if 'django.contrib.sessions' in settings.INSTALLED_APPS:
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engine = __import__(settings.SESSION_ENGINE, {}, {}, [''])
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cookie = self.cookies.get(settings.SESSION_COOKIE_NAME, None)
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if cookie:
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return engine.SessionStore(cookie.value)
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return {}
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session = property(_session)
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def request(self, **request):
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"""
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The master request method. Composes the environment dictionary
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and passes to the handler, returning the result of the handler.
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Assumes defaults for the query environment, which can be overridden
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using the arguments to the request.
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"""
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environ = {
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'HTTP_COOKIE': self.cookies,
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'PATH_INFO': '/',
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'QUERY_STRING': '',
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'REQUEST_METHOD': 'GET',
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'SCRIPT_NAME': None,
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'SERVER_NAME': 'testserver',
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'SERVER_PORT': 80,
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'SERVER_PROTOCOL': 'HTTP/1.1',
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}
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environ.update(self.defaults)
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environ.update(request)
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# Curry a data dictionary into an instance of
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# the template renderer callback function
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data = {}
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on_template_render = curry(store_rendered_templates, data)
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dispatcher.connect(on_template_render, signal=signals.template_rendered)
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# Capture exceptions created by the handler
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dispatcher.connect(self.store_exc_info, signal=got_request_exception)
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try:
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response = self.handler(environ)
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except TemplateDoesNotExist, e:
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# If the view raises an exception, Django will attempt to show
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# the 500.html template. If that template is not available,
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# we should ignore the error in favor of re-raising the
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# underlying exception that caused the 500 error. Any other
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# template found to be missing during view error handling
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# should be reported as-is.
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if e.args != ('500.html',):
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raise
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# Look for a signalled exception and reraise it
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if self.exc_info:
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raise self.exc_info[1], None, self.exc_info[2]
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# Save the client and request that stimulated the response
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response.client = self
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response.request = request
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# Add any rendered template detail to the response
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# If there was only one template rendered (the most likely case),
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# flatten the list to a single element
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for detail in ('template', 'context'):
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if data.get(detail):
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if len(data[detail]) == 1:
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setattr(response, detail, data[detail][0]);
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else:
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setattr(response, detail, data[detail])
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else:
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setattr(response, detail, None)
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# Update persistent cookie data
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if response.cookies:
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self.cookies.update(response.cookies)
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return response
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def get(self, path, data={}, **extra):
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"Request a response from the server using GET."
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r = {
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'CONTENT_LENGTH': None,
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'CONTENT_TYPE': 'text/html; charset=utf-8',
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'PATH_INFO': path,
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'QUERY_STRING': urlencode(data, doseq=True),
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'REQUEST_METHOD': 'GET',
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}
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r.update(extra)
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return self.request(**r)
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def post(self, path, data={}, content_type=MULTIPART_CONTENT, **extra):
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"Request a response from the server using POST."
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if content_type is MULTIPART_CONTENT:
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post_data = encode_multipart(BOUNDARY, data)
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else:
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post_data = data
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r = {
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'CONTENT_LENGTH': len(post_data),
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'CONTENT_TYPE': content_type,
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'PATH_INFO': path,
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'REQUEST_METHOD': 'POST',
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'wsgi.input': StringIO(post_data),
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}
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r.update(extra)
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return self.request(**r)
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def login(self, **credentials):
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"""Set the Client to appear as if it has sucessfully logged into a site.
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Returns True if login is possible; False if the provided credentials
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are incorrect, or the user is inactive, or if the sessions framework is
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not available.
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"""
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user = authenticate(**credentials)
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if user and user.is_active and 'django.contrib.sessions' in settings.INSTALLED_APPS:
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engine = __import__(settings.SESSION_ENGINE, {}, {}, [''])
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# Create a fake request to store login details
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request = HttpRequest()
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request.session = engine.SessionStore()
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login(request, user)
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# Set the cookie to represent the session
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self.cookies[settings.SESSION_COOKIE_NAME] = request.session.session_key
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self.cookies[settings.SESSION_COOKIE_NAME]['max-age'] = None
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self.cookies[settings.SESSION_COOKIE_NAME]['path'] = '/'
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self.cookies[settings.SESSION_COOKIE_NAME]['domain'] = settings.SESSION_COOKIE_DOMAIN
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self.cookies[settings.SESSION_COOKIE_NAME]['secure'] = settings.SESSION_COOKIE_SECURE or None
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self.cookies[settings.SESSION_COOKIE_NAME]['expires'] = None
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# Save the session values
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request.session.save()
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return True
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else:
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return False
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def logout(self):
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"""Removes the authenticated user's cookies.
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Causes the authenticated user to be logged out.
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"""
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session = __import__(settings.SESSION_ENGINE, {}, {}, ['']).SessionStore()
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session.delete(session_key=self.cookies['sessionid'].value)
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self.cookies = SimpleCookie()
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