Mercurial > hg
view tests/test-wireproto-clientreactor.py @ 39641:aa7e312375cf
wireprotov2: let clients drive delta behavior
Previously, the "manifestdata" and "filedata" commands assumed the
receiver had all parent revisions for requested nodes. Unless the
revision had no parents, they emitted a delta instead of a fulltext.
This strategy isn't appropriate for shallow clones and for clients
that only want to access fulltext revision data for a single node
without fetching their parent revisions.
This commit adds an "haveparents" argument to the "manifestdata"
and "filedata" commands that controls delta generation behavior.
Unless "haveparents" is set, the server assumes that the client
doesn't have parent revisions unless they were previously sent
as part of the current group of revisions.
This change allows the fulltext revision data of any individual
revision to be obtained. This will facilitate shallow clones
and other data retrieval strategies that don't require all previous
revisions of an entity to be fetched.
Differential Revision: https://phab.mercurial-scm.org/D4492
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Thu, 30 Aug 2018 14:55:34 -0700 |
parents | deff7cf7eefd |
children | 86b22a4cfab1 |
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from __future__ import absolute_import import unittest from mercurial import ( error, wireprotoframing as framing, ) ffs = framing.makeframefromhumanstring def sendframe(reactor, frame): """Send a frame bytearray to a reactor.""" header = framing.parseheader(frame) payload = frame[framing.FRAME_HEADER_SIZE:] assert len(payload) == header.length return reactor.onframerecv(framing.frame(header.requestid, header.streamid, header.streamflags, header.typeid, header.flags, payload)) class SingleSendTests(unittest.TestCase): """A reactor that can only send once rejects subsequent sends.""" if not getattr(unittest.TestCase, 'assertRaisesRegex', False): # Python 3.7 deprecates the regex*p* version, but 2.7 lacks # the regex version. assertRaisesRegex = (# camelcase-required unittest.TestCase.assertRaisesRegexp) def testbasic(self): reactor = framing.clientreactor(hasmultiplesend=False, buffersends=True) request, action, meta = reactor.callcommand(b'foo', {}) self.assertEqual(request.state, b'pending') self.assertEqual(action, b'noop') action, meta = reactor.flushcommands() self.assertEqual(action, b'sendframes') for frame in meta[b'framegen']: self.assertEqual(request.state, b'sending') self.assertEqual(request.state, b'sent') with self.assertRaisesRegex(error.ProgrammingError, 'cannot issue new commands'): reactor.callcommand(b'foo', {}) with self.assertRaisesRegex(error.ProgrammingError, 'cannot issue new commands'): reactor.callcommand(b'foo', {}) class NoBufferTests(unittest.TestCase): """A reactor without send buffering sends requests immediately.""" def testbasic(self): reactor = framing.clientreactor(hasmultiplesend=True, buffersends=False) request, action, meta = reactor.callcommand(b'command1', {}) self.assertEqual(request.requestid, 1) self.assertEqual(action, b'sendframes') self.assertEqual(request.state, b'pending') for frame in meta[b'framegen']: self.assertEqual(request.state, b'sending') self.assertEqual(request.state, b'sent') action, meta = reactor.flushcommands() self.assertEqual(action, b'noop') # And we can send another command. request, action, meta = reactor.callcommand(b'command2', {}) self.assertEqual(request.requestid, 3) self.assertEqual(action, b'sendframes') for frame in meta[b'framegen']: self.assertEqual(request.state, b'sending') self.assertEqual(request.state, b'sent') class BadFrameRecvTests(unittest.TestCase): if not getattr(unittest.TestCase, 'assertRaisesRegex', False): # Python 3.7 deprecates the regex*p* version, but 2.7 lacks # the regex version. assertRaisesRegex = (# camelcase-required unittest.TestCase.assertRaisesRegexp) def testoddstream(self): reactor = framing.clientreactor() action, meta = sendframe(reactor, ffs(b'1 1 0 1 0 foo')) self.assertEqual(action, b'error') self.assertEqual(meta[b'message'], b'received frame with odd numbered stream ID: 1') def testunknownstream(self): reactor = framing.clientreactor() action, meta = sendframe(reactor, ffs(b'1 0 0 1 0 foo')) self.assertEqual(action, b'error') self.assertEqual(meta[b'message'], b'received frame on unknown stream without beginning ' b'of stream flag set') def testunhandledframetype(self): reactor = framing.clientreactor(buffersends=False) request, action, meta = reactor.callcommand(b'foo', {}) for frame in meta[b'framegen']: pass with self.assertRaisesRegex(error.ProgrammingError, 'unhandled frame type'): sendframe(reactor, ffs(b'1 0 stream-begin text-output 0 foo')) class StreamTests(unittest.TestCase): def testmultipleresponseframes(self): reactor = framing.clientreactor(buffersends=False) request, action, meta = reactor.callcommand(b'foo', {}) self.assertEqual(action, b'sendframes') for f in meta[b'framegen']: pass action, meta = sendframe( reactor, ffs(b'%d 0 stream-begin command-response 0 foo' % request.requestid)) self.assertEqual(action, b'responsedata') action, meta = sendframe( reactor, ffs(b'%d 0 0 command-response eos bar' % request.requestid)) self.assertEqual(action, b'responsedata') if __name__ == '__main__': import silenttestrunner silenttestrunner.main(__name__)