view tests/test-wireproto-clientreactor.py @ 39093:cc37009e95ca

rebase: add --stop option to stop rebase at any point (issue5206)

Before this patch, during a rebase if you get a point where you can't
figure out what to do next, then either you had to complete your series
or abandon all the work you have done during this rebase.

Now, with this feature you can stop at any point by keeping the rebased
csets and mark original csets as obsolete. And if you don't have evolution
extension enabled then you can use --keep option as an alternative which
will keep original csets too, instead of marking them obsolete.

Differential Revision: https://phab.mercurial-scm.org/D3959

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__)