web/lib/django/contrib/csrf/tests.py
changeset 0 0d40e90630ef
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/django/contrib/csrf/tests.py	Wed Jan 20 00:34:04 2010 +0100
@@ -0,0 +1,144 @@
+# -*- coding: utf-8 -*-
+
+from django.test import TestCase
+from django.http import HttpRequest, HttpResponse, HttpResponseForbidden
+from django.contrib.csrf.middleware import CsrfMiddleware, _make_token, csrf_exempt
+from django.conf import settings
+
+
+def post_form_response():
+    resp = HttpResponse(content="""
+<html><body><form method="POST"><input type="text" /></form></body></html>
+""", mimetype="text/html")
+    return resp
+
+def test_view(request):
+    return post_form_response()
+
+class CsrfMiddlewareTest(TestCase):
+
+    _session_id = "1"
+
+    def _get_GET_no_session_request(self):
+        return HttpRequest()
+
+    def _get_GET_session_request(self):
+        req = self._get_GET_no_session_request()
+        req.COOKIES[settings.SESSION_COOKIE_NAME] = self._session_id
+        return req
+
+    def _get_POST_session_request(self):
+        req = self._get_GET_session_request()
+        req.method = "POST"
+        return req
+
+    def _get_POST_no_session_request(self):
+        req = self._get_GET_no_session_request()
+        req.method = "POST"
+        return req
+
+    def _get_POST_session_request_with_token(self):
+        req = self._get_POST_session_request()
+        req.POST['csrfmiddlewaretoken'] = _make_token(self._session_id)
+        return req
+
+    def _get_post_form_response(self):
+        return post_form_response()
+
+    def _get_new_session_response(self):
+        resp = self._get_post_form_response()
+        resp.cookies[settings.SESSION_COOKIE_NAME] = self._session_id
+        return resp
+
+    def _check_token_present(self, response):
+        self.assertContains(response, "name='csrfmiddlewaretoken' value='%s'" % _make_token(self._session_id))
+
+    def get_view(self):
+        return test_view
+
+    # Check the post processing
+    def test_process_response_no_session(self):
+        """
+        Check the post-processor does nothing if no session active
+        """
+        req = self._get_GET_no_session_request()
+        resp = self._get_post_form_response()
+        resp_content = resp.content # needed because process_response modifies resp
+        resp2 = CsrfMiddleware().process_response(req, resp)
+        self.assertEquals(resp_content, resp2.content)
+
+    def test_process_response_existing_session(self):
+        """
+        Check that the token is inserted if there is an existing session
+        """
+        req = self._get_GET_session_request()
+        resp = self._get_post_form_response()
+        resp_content = resp.content # needed because process_response modifies resp
+        resp2 = CsrfMiddleware().process_response(req, resp)
+        self.assertNotEqual(resp_content, resp2.content)
+        self._check_token_present(resp2)
+
+    def test_process_response_new_session(self):
+        """
+        Check that the token is inserted if there is a new session being started
+        """
+        req = self._get_GET_no_session_request() # no session in request
+        resp = self._get_new_session_response() # but new session started
+        resp_content = resp.content # needed because process_response modifies resp
+        resp2 = CsrfMiddleware().process_response(req, resp)
+        self.assertNotEqual(resp_content, resp2.content)
+        self._check_token_present(resp2)
+
+    def test_process_response_exempt_view(self):
+        """
+        Check that no post processing is done for an exempt view
+        """
+        req = self._get_POST_session_request()
+        resp = csrf_exempt(self.get_view())(req)
+        resp_content = resp.content
+        resp2 = CsrfMiddleware().process_response(req, resp)
+        self.assertEquals(resp_content, resp2.content)
+
+    # Check the request processing
+    def test_process_request_no_session(self):
+        """
+        Check that if no session is present, the middleware does nothing.
+        to the incoming request.
+        """
+        req = self._get_POST_no_session_request()
+        req2 = CsrfMiddleware().process_view(req, self.get_view(), (), {})
+        self.assertEquals(None, req2)
+
+    def test_process_request_session_no_token(self):
+        """
+        Check that if a session is present but no token, we get a 'forbidden'
+        """
+        req = self._get_POST_session_request()
+        req2 = CsrfMiddleware().process_view(req, self.get_view(), (), {})
+        self.assertEquals(HttpResponseForbidden, req2.__class__)
+
+    def test_process_request_session_and_token(self):
+        """
+        Check that if a session is present and a token, the middleware lets it through
+        """
+        req = self._get_POST_session_request_with_token()
+        req2 = CsrfMiddleware().process_view(req, self.get_view(), (), {})
+        self.assertEquals(None, req2)
+
+    def test_process_request_session_no_token_exempt_view(self):
+        """
+        Check that if a session is present and no token, but the csrf_exempt
+        decorator has been applied to the view, the middleware lets it through
+        """
+        req = self._get_POST_session_request()
+        req2 = CsrfMiddleware().process_view(req, csrf_exempt(self.get_view()), (), {})
+        self.assertEquals(None, req2)
+
+    def test_ajax_exemption(self):
+        """
+        Check that AJAX requests are automatically exempted.
+        """
+        req = self._get_POST_session_request()
+        req.META['HTTP_X_REQUESTED_WITH'] = 'XMLHttpRequest'
+        req2 = CsrfMiddleware().process_view(req, self.get_view(), (), {})
+        self.assertEquals(None, req2)