diff options
| -rw-r--r-- | changelog.d/3446.misc | 0 | ||||
| -rw-r--r-- | tests/server.py | 181 | ||||
| -rw-r--r-- | tests/test_server.py | 128 |
3 files changed, 309 insertions, 0 deletions
diff --git a/changelog.d/3446.misc b/changelog.d/3446.misc new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/changelog.d/3446.misc diff --git a/tests/server.py b/tests/server.py new file mode 100644 index 0000000000..73069dff52 --- /dev/null +++ b/tests/server.py @@ -0,0 +1,181 @@ +from io import BytesIO + +import attr +import json +from six import text_type + +from twisted.python.failure import Failure +from twisted.internet.defer import Deferred +from twisted.test.proto_helpers import MemoryReactorClock + +from synapse.http.site import SynapseRequest +from twisted.internet import threads +from tests.utils import setup_test_homeserver as _sth + + +@attr.s +class FakeChannel(object): + """ + A fake Twisted Web Channel (the part that interfaces with the + wire). + """ + + result = attr.ib(factory=dict) + + @property + def json_body(self): + if not self.result: + raise Exception("No result yet.") + return json.loads(self.result["body"]) + + def writeHeaders(self, version, code, reason, headers): + self.result["version"] = version + self.result["code"] = code + self.result["reason"] = reason + self.result["headers"] = headers + + def write(self, content): + if "body" not in self.result: + self.result["body"] = b"" + + self.result["body"] += content + + def requestDone(self, _self): + self.result["done"] = True + + def getPeer(self): + return None + + def getHost(self): + return None + + @property + def transport(self): + return self + + +class FakeSite: + """ + A fake Twisted Web Site, with mocks of the extra things that + Synapse adds. + """ + + server_version_string = b"1" + site_tag = "test" + + @property + def access_logger(self): + class FakeLogger: + def info(self, *args, **kwargs): + pass + + return FakeLogger() + + +def make_request(method, path, content=b""): + """ + Make a web request using the given method and path, feed it the + content, and return the Request and the Channel underneath. + """ + + if isinstance(content, text_type): + content = content.encode('utf8') + + site = FakeSite() + channel = FakeChannel() + + req = SynapseRequest(site, channel) + req.process = lambda: b"" + req.content = BytesIO(content) + req.requestReceived(method, path, b"1.1") + + return req, channel + + +def wait_until_result(clock, channel, timeout=100): + """ + Wait until the channel has a result. + """ + clock.run() + x = 0 + + while not channel.result: + x += 1 + + if x > timeout: + raise Exception("Timed out waiting for request to finish.") + + clock.advance(0.1) + + +class ThreadedMemoryReactorClock(MemoryReactorClock): + """ + A MemoryReactorClock that supports callFromThread. + """ + def callFromThread(self, callback, *args, **kwargs): + """ + Make the callback fire in the next reactor iteration. + """ + d = Deferred() + d.addCallback(lambda x: callback(*args, **kwargs)) + self.callLater(0, d.callback, True) + return d + + +def setup_test_homeserver(*args, **kwargs): + """ + Set up a synchronous test server, driven by the reactor used by + the homeserver. + """ + d = _sth(*args, **kwargs).result + + # Make the thread pool synchronous. + clock = d.get_clock() + pool = d.get_db_pool() + + def runWithConnection(func, *args, **kwargs): + return threads.deferToThreadPool( + pool._reactor, + pool.threadpool, + pool._runWithConnection, + func, + *args, + **kwargs + ) + + def runInteraction(interaction, *args, **kwargs): + return threads.deferToThreadPool( + pool._reactor, + pool.threadpool, + pool._runInteraction, + interaction, + *args, + **kwargs + ) + + pool.runWithConnection = runWithConnection + pool.runInteraction = runInteraction + + class ThreadPool: + """ + Threadless thread pool. + """ + def start(self): + pass + + def callInThreadWithCallback(self, onResult, function, *args, **kwargs): + def _(res): + if isinstance(res, Failure): + onResult(False, res) + else: + onResult(True, res) + + d = Deferred() + d.addCallback(lambda x: function(*args, **kwargs)) + d.addBoth(_) + clock._reactor.callLater(0, d.callback, True) + return d + + clock.threadpool = ThreadPool() + pool.threadpool = ThreadPool() + return d 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") |