diff --git a/tests/test_server.py b/tests/test_server.py
new file mode 100644
index 0000000000..8ad822c43b
--- /dev/null
+++ b/tests/test_server.py
@@ -0,0 +1,128 @@
+import json
+import re
+
+from twisted.internet.defer import Deferred
+from twisted.test.proto_helpers import MemoryReactorClock
+
+from synapse.util import Clock
+from synapse.api.errors import Codes, SynapseError
+from synapse.http.server import JsonResource
+from tests import unittest
+from tests.server import make_request, setup_test_homeserver
+
+
+class JsonResourceTests(unittest.TestCase):
+ def setUp(self):
+ self.reactor = MemoryReactorClock()
+ self.hs_clock = Clock(self.reactor)
+ self.homeserver = setup_test_homeserver(
+ http_client=None, clock=self.hs_clock, reactor=self.reactor
+ )
+
+ def test_handler_for_request(self):
+ """
+ JsonResource.handler_for_request gives correctly decoded URL args to
+ the callback, while Twisted will give the raw bytes of URL query
+ arguments.
+ """
+ got_kwargs = {}
+
+ def _callback(request, **kwargs):
+ got_kwargs.update(kwargs)
+ return (200, kwargs)
+
+ res = JsonResource(self.homeserver)
+ res.register_paths("GET", [re.compile("^/foo/(?P<room_id>[^/]*)$")], _callback)
+
+ request, channel = make_request(b"GET", b"/foo/%E2%98%83?a=%E2%98%83")
+ request.render(res)
+
+ self.assertEqual(request.args, {b'a': [u"\N{SNOWMAN}".encode('utf8')]})
+ self.assertEqual(got_kwargs, {u"room_id": u"\N{SNOWMAN}"})
+
+ def test_callback_direct_exception(self):
+ """
+ If the web callback raises an uncaught exception, it will be translated
+ into a 500.
+ """
+
+ def _callback(request, **kwargs):
+ raise Exception("boo")
+
+ res = JsonResource(self.homeserver)
+ res.register_paths("GET", [re.compile("^/foo$")], _callback)
+
+ request, channel = make_request(b"GET", b"/foo")
+ request.render(res)
+
+ self.assertEqual(channel.result["code"], b'500')
+
+ def test_callback_indirect_exception(self):
+ """
+ If the web callback raises an uncaught exception in a Deferred, it will
+ be translated into a 500.
+ """
+
+ def _throw(*args):
+ raise Exception("boo")
+
+ def _callback(request, **kwargs):
+ d = Deferred()
+ d.addCallback(_throw)
+ self.reactor.callLater(1, d.callback, True)
+ return d
+
+ res = JsonResource(self.homeserver)
+ res.register_paths("GET", [re.compile("^/foo$")], _callback)
+
+ request, channel = make_request(b"GET", b"/foo")
+ request.render(res)
+
+ # No error has been raised yet
+ self.assertTrue("code" not in channel.result)
+
+ # Advance time, now there's an error
+ self.reactor.advance(1)
+ self.assertEqual(channel.result["code"], b'500')
+
+ def test_callback_synapseerror(self):
+ """
+ If the web callback raises a SynapseError, it returns the appropriate
+ status code and message set in it.
+ """
+
+ def _callback(request, **kwargs):
+ raise SynapseError(403, "Forbidden!!one!", Codes.FORBIDDEN)
+
+ res = JsonResource(self.homeserver)
+ res.register_paths("GET", [re.compile("^/foo$")], _callback)
+
+ request, channel = make_request(b"GET", b"/foo")
+ request.render(res)
+
+ self.assertEqual(channel.result["code"], b'403')
+ reply_body = json.loads(channel.result["body"])
+ self.assertEqual(reply_body["error"], "Forbidden!!one!")
+ self.assertEqual(reply_body["errcode"], "M_FORBIDDEN")
+
+ def test_no_handler(self):
+ """
+ If there is no handler to process the request, Synapse will return 400.
+ """
+
+ def _callback(request, **kwargs):
+ """
+ Not ever actually called!
+ """
+ self.fail("shouldn't ever get here")
+
+ res = JsonResource(self.homeserver)
+ res.register_paths("GET", [re.compile("^/foo$")], _callback)
+
+ request, channel = make_request(b"GET", b"/foobar")
+ request.render(res)
+
+ self.assertEqual(channel.result["code"], b'400')
+ reply_body = json.loads(channel.result["body"])
+ self.assertEqual(reply_body["error"], "Unrecognized request")
+ self.assertEqual(reply_body["errcode"], "M_UNRECOGNIZED")
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