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from __future__ import absolute_import, print_function
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import unittest
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from mercurial.thirdparty import (
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cbor,
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)
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from mercurial import (
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util,
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wireprotoframing as framing,
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)
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ffs = framing.makeframefromhumanstring
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def makereactor(deferoutput=False):
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return framing.serverreactor(deferoutput=deferoutput)
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def sendframes(reactor, gen):
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"""Send a generator of frame bytearray to a reactor.
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Emits a generator of results from ``onframerecv()`` calls.
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"""
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for frame in gen:
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header = framing.parseheader(frame)
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payload = frame[framing.FRAME_HEADER_SIZE:]
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assert len(payload) == header.length
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yield reactor.onframerecv(framing.frame(header.requestid,
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header.streamid,
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header.streamflags,
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header.typeid,
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header.flags,
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payload))
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def sendcommandframes(reactor, stream, rid, cmd, args, datafh=None):
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"""Generate frames to run a command and send them to a reactor."""
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return sendframes(reactor,
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framing.createcommandframes(stream, rid, cmd, args,
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datafh))
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class ServerReactorTests(unittest.TestCase):
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def _sendsingleframe(self, reactor, f):
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results = list(sendframes(reactor, [f]))
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self.assertEqual(len(results), 1)
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return results[0]
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def assertaction(self, res, expected):
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self.assertIsInstance(res, tuple)
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self.assertEqual(len(res), 2)
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self.assertIsInstance(res[1], dict)
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self.assertEqual(res[0], expected)
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def assertframesequal(self, frames, framestrings):
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expected = [ffs(s) for s in framestrings]
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self.assertEqual(list(frames), expected)
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def test1framecommand(self):
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"""Receiving a command in a single frame yields request to run it."""
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reactor = makereactor()
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stream = framing.stream(1)
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results = list(sendcommandframes(reactor, stream, 1, b'mycommand', {}))
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self.assertEqual(len(results), 1)
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self.assertaction(results[0], 'runcommand')
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self.assertEqual(results[0][1], {
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'requestid': 1,
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'command': b'mycommand',
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'args': {},
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'data': None,
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})
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result = reactor.oninputeof()
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self.assertaction(result, 'noop')
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def test1argument(self):
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reactor = makereactor()
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stream = framing.stream(1)
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results = list(sendcommandframes(reactor, stream, 41, b'mycommand',
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{b'foo': b'bar'}))
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self.assertEqual(len(results), 1)
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self.assertaction(results[0], 'runcommand')
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self.assertEqual(results[0][1], {
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'requestid': 41,
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'command': b'mycommand',
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'args': {b'foo': b'bar'},
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'data': None,
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})
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def testmultiarguments(self):
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reactor = makereactor()
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stream = framing.stream(1)
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results = list(sendcommandframes(reactor, stream, 1, b'mycommand',
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{b'foo': b'bar', b'biz': b'baz'}))
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self.assertEqual(len(results), 1)
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self.assertaction(results[0], 'runcommand')
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self.assertEqual(results[0][1], {
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'requestid': 1,
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'command': b'mycommand',
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'args': {b'foo': b'bar', b'biz': b'baz'},
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'data': None,
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})
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def testsimplecommanddata(self):
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reactor = makereactor()
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stream = framing.stream(1)
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results = list(sendcommandframes(reactor, stream, 1, b'mycommand', {},
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util.bytesio(b'data!')))
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self.assertEqual(len(results), 2)
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self.assertaction(results[0], 'wantframe')
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self.assertaction(results[1], 'runcommand')
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self.assertEqual(results[1][1], {
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'requestid': 1,
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'command': b'mycommand',
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'args': {},
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'data': b'data!',
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})
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def testmultipledataframes(self):
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frames = [
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ffs(b'1 1 stream-begin command-request new|have-data '
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b"cbor:{b'name': b'mycommand'}"),
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ffs(b'1 1 0 command-data continuation data1'),
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ffs(b'1 1 0 command-data continuation data2'),
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ffs(b'1 1 0 command-data eos data3'),
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]
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reactor = makereactor()
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results = list(sendframes(reactor, frames))
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self.assertEqual(len(results), 4)
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for i in range(3):
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self.assertaction(results[i], 'wantframe')
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self.assertaction(results[3], 'runcommand')
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self.assertEqual(results[3][1], {
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'requestid': 1,
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'command': b'mycommand',
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'args': {},
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'data': b'data1data2data3',
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})
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def testargumentanddata(self):
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frames = [
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ffs(b'1 1 stream-begin command-request new|have-data '
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b"cbor:{b'name': b'command', b'args': {b'key': b'val',"
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b"b'foo': b'bar'}}"),
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ffs(b'1 1 0 command-data continuation value1'),
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ffs(b'1 1 0 command-data eos value2'),
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]
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reactor = makereactor()
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results = list(sendframes(reactor, frames))
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self.assertaction(results[-1], 'runcommand')
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self.assertEqual(results[-1][1], {
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'requestid': 1,
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'command': b'command',
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'args': {
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b'key': b'val',
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b'foo': b'bar',
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},
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'data': b'value1value2',
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})
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def testnewandcontinuation(self):
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result = self._sendsingleframe(makereactor(),
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ffs(b'1 1 stream-begin command-request new|continuation '))
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self.assertaction(result, 'error')
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self.assertEqual(result[1], {
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'message': b'received command request frame with both new and '
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b'continuation flags set',
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})
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def testneithernewnorcontinuation(self):
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result = self._sendsingleframe(makereactor(),
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ffs(b'1 1 stream-begin command-request 0 '))
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self.assertaction(result, 'error')
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self.assertEqual(result[1], {
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'message': b'received command request frame with neither new nor '
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b'continuation flags set',
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})
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def testunexpectedcommanddata(self):
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"""Command data frame when not running a command is an error."""
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result = self._sendsingleframe(makereactor(),
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ffs(b'1 1 stream-begin command-data 0 ignored'))
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self.assertaction(result, 'error')
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self.assertEqual(result[1], {
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'message': b'expected command request frame; got 3',
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})
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def testunexpectedcommanddatareceiving(self):
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"""Same as above except the command is receiving."""
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results = list(sendframes(makereactor(), [
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ffs(b'1 1 stream-begin command-request new|more '
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b"cbor:{b'name': b'ignored'}"),
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ffs(b'1 1 0 command-data eos ignored'),
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]))
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self.assertaction(results[0], 'wantframe')
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self.assertaction(results[1], 'error')
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self.assertEqual(results[1][1], {
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'message': b'received command data frame for request that is not '
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b'expecting data: 1',
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})
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def testconflictingrequestidallowed(self):
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"""Multiple fully serviced commands with same request ID is allowed."""
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reactor = makereactor()
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results = []
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outstream = reactor.makeoutputstream()
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results.append(self._sendsingleframe(
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reactor, ffs(b'1 1 stream-begin command-request new '
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b"cbor:{b'name': b'command'}")))
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result = reactor.onbytesresponseready(outstream, 1, b'response1')
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self.assertaction(result, 'sendframes')
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list(result[1]['framegen'])
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results.append(self._sendsingleframe(
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reactor, ffs(b'1 1 stream-begin command-request new '
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b"cbor:{b'name': b'command'}")))
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result = reactor.onbytesresponseready(outstream, 1, b'response2')
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self.assertaction(result, 'sendframes')
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list(result[1]['framegen'])
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results.append(self._sendsingleframe(
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reactor, ffs(b'1 1 stream-begin command-request new '
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b"cbor:{b'name': b'command'}")))
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result = reactor.onbytesresponseready(outstream, 1, b'response3')
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self.assertaction(result, 'sendframes')
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list(result[1]['framegen'])
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for i in range(3):
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self.assertaction(results[i], 'runcommand')
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self.assertEqual(results[i][1], {
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'requestid': 1,
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'command': b'command',
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'args': {},
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'data': None,
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})
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def testconflictingrequestid(self):
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"""Request ID for new command matching in-flight command is illegal."""
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results = list(sendframes(makereactor(), [
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ffs(b'1 1 stream-begin command-request new|more '
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b"cbor:{b'name': b'command'}"),
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ffs(b'1 1 0 command-request new '
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b"cbor:{b'name': b'command1'}"),
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]))
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self.assertaction(results[0], 'wantframe')
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self.assertaction(results[1], 'error')
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self.assertEqual(results[1][1], {
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'message': b'request with ID 1 already received',
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})
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def testinterleavedcommands(self):
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cbor1 = cbor.dumps({
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b'name': b'command1',
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b'args': {
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b'foo': b'bar',
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b'key1': b'val',
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}
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}, canonical=True)
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cbor3 = cbor.dumps({
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b'name': b'command3',
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b'args': {
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b'biz': b'baz',
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b'key': b'val',
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},
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}, canonical=True)
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results = list(sendframes(makereactor(), [
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ffs(b'1 1 stream-begin command-request new|more %s' % cbor1[0:6]),
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ffs(b'3 1 0 command-request new|more %s' % cbor3[0:10]),
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ffs(b'1 1 0 command-request continuation|more %s' % cbor1[6:9]),
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ffs(b'3 1 0 command-request continuation|more %s' % cbor3[10:13]),
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ffs(b'3 1 0 command-request continuation %s' % cbor3[13:]),
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ffs(b'1 1 0 command-request continuation %s' % cbor1[9:]),
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]))
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self.assertEqual([t[0] for t in results], [
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'wantframe',
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'wantframe',
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'wantframe',
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'wantframe',
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'runcommand',
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'runcommand',
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])
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self.assertEqual(results[4][1], {
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'requestid': 3,
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'command': 'command3',
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'args': {b'biz': b'baz', b'key': b'val'},
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'data': None,
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})
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self.assertEqual(results[5][1], {
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'requestid': 1,
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'command': 'command1',
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'args': {b'foo': b'bar', b'key1': b'val'},
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'data': None,
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})
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def testmissingcommanddataframe(self):
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# The reactor doesn't currently handle partially received commands.
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# So this test is failing to do anything with request 1.
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frames = [
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ffs(b'1 1 stream-begin command-request new|have-data '
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b"cbor:{b'name': b'command1'}"),
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ffs(b'3 1 0 command-request new '
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b"cbor:{b'name': b'command2'}"),
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]
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results = list(sendframes(makereactor(), frames))
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self.assertEqual(len(results), 2)
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self.assertaction(results[0], 'wantframe')
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self.assertaction(results[1], 'runcommand')
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def testmissingcommanddataframeflags(self):
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frames = [
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ffs(b'1 1 stream-begin command-request new|have-data '
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b"cbor:{b'name': b'command1'}"),
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ffs(b'1 1 0 command-data 0 data'),
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]
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results = list(sendframes(makereactor(), frames))
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self.assertEqual(len(results), 2)
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self.assertaction(results[0], 'wantframe')
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self.assertaction(results[1], 'error')
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self.assertEqual(results[1][1], {
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'message': b'command data frame without flags',
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})
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def testframefornonreceivingrequest(self):
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"""Receiving a frame for a command that is not receiving is illegal."""
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results = list(sendframes(makereactor(), [
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ffs(b'1 1 stream-begin command-request new '
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b"cbor:{b'name': b'command1'}"),
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ffs(b'3 1 0 command-request new|have-data '
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b"cbor:{b'name': b'command3'}"),
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ffs(b'5 1 0 command-data eos ignored'),
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]))
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self.assertaction(results[2], 'error')
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self.assertEqual(results[2][1], {
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'message': b'received frame for request that is not receiving: 5',
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})
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def testsimpleresponse(self):
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"""Bytes response to command sends result frames."""
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reactor = makereactor()
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instream = framing.stream(1)
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list(sendcommandframes(reactor, instream, 1, b'mycommand', {}))
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outstream = reactor.makeoutputstream()
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result = reactor.onbytesresponseready(outstream, 1, b'response')
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self.assertaction(result, 'sendframes')
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self.assertframesequal(result[1]['framegen'], [
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b'1 2 stream-begin bytes-response eos response',
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])
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def testmultiframeresponse(self):
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"""Bytes response spanning multiple frames is handled."""
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first = b'x' * framing.DEFAULT_MAX_FRAME_SIZE
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second = b'y' * 100
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reactor = makereactor()
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instream = framing.stream(1)
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list(sendcommandframes(reactor, instream, 1, b'mycommand', {}))
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outstream = reactor.makeoutputstream()
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result = reactor.onbytesresponseready(outstream, 1, first + second)
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self.assertaction(result, 'sendframes')
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self.assertframesequal(result[1]['framegen'], [
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b'1 2 stream-begin bytes-response continuation %s' % first,
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b'1 2 0 bytes-response eos %s' % second,
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])
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def testapplicationerror(self):
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reactor = makereactor()
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instream = framing.stream(1)
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list(sendcommandframes(reactor, instream, 1, b'mycommand', {}))
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outstream = reactor.makeoutputstream()
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result = reactor.onapplicationerror(outstream, 1, b'some message')
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self.assertaction(result, 'sendframes')
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self.assertframesequal(result[1]['framegen'], [
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b'1 2 stream-begin error-response application some message',
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])
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def test1commanddeferresponse(self):
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"""Responses when in deferred output mode are delayed until EOF."""
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reactor = makereactor(deferoutput=True)
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instream = framing.stream(1)
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results = list(sendcommandframes(reactor, instream, 1, b'mycommand',
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{}))
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self.assertEqual(len(results), 1)
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self.assertaction(results[0], 'runcommand')
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outstream = reactor.makeoutputstream()
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result = reactor.onbytesresponseready(outstream, 1, b'response')
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self.assertaction(result, 'noop')
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result = reactor.oninputeof()
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self.assertaction(result, 'sendframes')
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self.assertframesequal(result[1]['framegen'], [
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b'1 2 stream-begin bytes-response eos response',
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])
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def testmultiplecommanddeferresponse(self):
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reactor = makereactor(deferoutput=True)
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instream = framing.stream(1)
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list(sendcommandframes(reactor, instream, 1, b'command1', {}))
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list(sendcommandframes(reactor, instream, 3, b'command2', {}))
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outstream = reactor.makeoutputstream()
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result = reactor.onbytesresponseready(outstream, 1, b'response1')
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self.assertaction(result, 'noop')
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result = reactor.onbytesresponseready(outstream, 3, b'response2')
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self.assertaction(result, 'noop')
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result = reactor.oninputeof()
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|
self.assertaction(result, 'sendframes')
|
|
|
self.assertframesequal(result[1]['framegen'], [
|
|
|
b'1 2 stream-begin bytes-response eos response1',
|
|
|
b'3 2 0 bytes-response eos response2'
|
|
|
])
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|
|
|
|
|
def testrequestidtracking(self):
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|
reactor = makereactor(deferoutput=True)
|
|
|
instream = framing.stream(1)
|
|
|
list(sendcommandframes(reactor, instream, 1, b'command1', {}))
|
|
|
list(sendcommandframes(reactor, instream, 3, b'command2', {}))
|
|
|
list(sendcommandframes(reactor, instream, 5, b'command3', {}))
|
|
|
|
|
|
# Register results for commands out of order.
|
|
|
outstream = reactor.makeoutputstream()
|
|
|
reactor.onbytesresponseready(outstream, 3, b'response3')
|
|
|
reactor.onbytesresponseready(outstream, 1, b'response1')
|
|
|
reactor.onbytesresponseready(outstream, 5, b'response5')
|
|
|
|
|
|
result = reactor.oninputeof()
|
|
|
self.assertaction(result, 'sendframes')
|
|
|
self.assertframesequal(result[1]['framegen'], [
|
|
|
b'3 2 stream-begin bytes-response eos response3',
|
|
|
b'1 2 0 bytes-response eos response1',
|
|
|
b'5 2 0 bytes-response eos response5',
|
|
|
])
|
|
|
|
|
|
def testduplicaterequestonactivecommand(self):
|
|
|
"""Receiving a request ID that matches a request that isn't finished."""
|
|
|
reactor = makereactor()
|
|
|
stream = framing.stream(1)
|
|
|
list(sendcommandframes(reactor, stream, 1, b'command1', {}))
|
|
|
results = list(sendcommandframes(reactor, stream, 1, b'command1', {}))
|
|
|
|
|
|
self.assertaction(results[0], 'error')
|
|
|
self.assertEqual(results[0][1], {
|
|
|
'message': b'request with ID 1 is already active',
|
|
|
})
|
|
|
|
|
|
def testduplicaterequestonactivecommandnosend(self):
|
|
|
"""Same as above but we've registered a response but haven't sent it."""
|
|
|
reactor = makereactor()
|
|
|
instream = framing.stream(1)
|
|
|
list(sendcommandframes(reactor, instream, 1, b'command1', {}))
|
|
|
outstream = reactor.makeoutputstream()
|
|
|
reactor.onbytesresponseready(outstream, 1, b'response')
|
|
|
|
|
|
# We've registered the response but haven't sent it. From the
|
|
|
# perspective of the reactor, the command is still active.
|
|
|
|
|
|
results = list(sendcommandframes(reactor, instream, 1, b'command1', {}))
|
|
|
self.assertaction(results[0], 'error')
|
|
|
self.assertEqual(results[0][1], {
|
|
|
'message': b'request with ID 1 is already active',
|
|
|
})
|
|
|
|
|
|
def testduplicaterequestaftersend(self):
|
|
|
"""We can use a duplicate request ID after we've sent the response."""
|
|
|
reactor = makereactor()
|
|
|
instream = framing.stream(1)
|
|
|
list(sendcommandframes(reactor, instream, 1, b'command1', {}))
|
|
|
outstream = reactor.makeoutputstream()
|
|
|
res = reactor.onbytesresponseready(outstream, 1, b'response')
|
|
|
list(res[1]['framegen'])
|
|
|
|
|
|
results = list(sendcommandframes(reactor, instream, 1, b'command1', {}))
|
|
|
self.assertaction(results[0], 'runcommand')
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
import silenttestrunner
|
|
|
silenttestrunner.main(__name__)
|
|
|
|
