tests: skip wireproto clientreactor tests on Python 3.6.0-3.6.3 inclusive

See comment next to the if statement for sad details.

Differential Revision: https://phab.mercurial-scm.org/D5207

tests/test-wireproto-clientreactor.py

@@ -1,604 +1,610 b''
 from __future__ import absolute_import
 
+import sys
 import unittest
 import zlib
 
 from mercurial import (
     error,
     ui as uimod,
     wireprotoframing as framing,
 )
 from mercurial.utils import (
     cborutil,
 )
 
 try:
     from mercurial import zstd
     zstd.__version__
 except ImportError:
     zstd = None
 
 ffs = framing.makeframefromhumanstring
 
 globalui = uimod.ui()
 
 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(globalui,
                                         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(globalui,
                                         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(globalui)
 
         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(globalui)
 
         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(globalui, 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(globalui, 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')
 
 class RedirectTests(unittest.TestCase):
     def testredirect(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         redirect = {
             b'targets': [b'a', b'b'],
             b'hashes': [b'sha256'],
         }
 
         request, action, meta = reactor.callcommand(
             b'foo', {}, redirect=redirect)
 
         self.assertEqual(action, b'sendframes')
 
         frames = list(meta[b'framegen'])
         self.assertEqual(len(frames), 1)
 
         self.assertEqual(frames[0],
                          ffs(b'1 1 stream-begin command-request new '
                              b"cbor:{b'name': b'foo', "
                              b"b'redirect': {b'targets': [b'a', b'b'], "
                              b"b'hashes': [b'sha256']}}"))
 
 class StreamSettingsTests(unittest.TestCase):
     def testnoflags(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings 0 '))
 
         self.assertEqual(action, b'error')
         self.assertEqual(meta, {
             b'message': b'stream encoding settings frame must have '
                         b'continuation or end of stream flag set',
         })
 
     def testconflictflags(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings continuation|eos '))
 
         self.assertEqual(action, b'error')
         self.assertEqual(meta, {
             b'message': b'stream encoding settings frame cannot have both '
                         b'continuation and end of stream flags set',
         })
 
     def testemptypayload(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings eos '))
 
         self.assertEqual(action, b'error')
         self.assertEqual(meta, {
             b'message': b'stream encoding settings frame did not contain '
                         b'CBOR data'
         })
 
     def testbadcbor(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings eos badvalue'))
 
         self.assertEqual(action, b'error')
 
     def testsingleobject(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings eos cbor:b"identity"'))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
     def testmultipleobjects(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         data = b''.join([
             b''.join(cborutil.streamencode(b'identity')),
             b''.join(cborutil.streamencode({b'foo', b'bar'})),
         ])
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings eos %s' % data))
 
         self.assertEqual(action, b'error')
         self.assertEqual(meta, {
             b'message': b'error setting stream decoder: identity decoder '
                         b'received unexpected additional values',
         })
 
     def testmultipleframes(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         data = b''.join(cborutil.streamencode(b'identity'))
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings continuation %s' %
                 data[0:3]))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 0 stream-settings eos %s' % data[3:]))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
     def testinvalidencoder(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'1 2 stream-begin stream-settings eos cbor:b"badvalue"'))
 
         self.assertEqual(action, b'error')
         self.assertEqual(meta, {
             b'message': b'error setting stream decoder: unknown stream '
                         b'decoder: badvalue',
         })
 
     def testzlibencoding(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zlib"' %
                 request.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         result = {
             b'status': b'ok',
         }
         encoded = b''.join(cborutil.streamencode(result))
 
         compressed = zlib.compress(encoded)
         self.assertEqual(zlib.decompress(compressed), encoded)
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' %
                 (request.requestid, compressed)))
 
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], encoded)
 
     def testzlibencodingsinglebyteframes(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zlib"' %
                 request.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         result = {
             b'status': b'ok',
         }
         encoded = b''.join(cborutil.streamencode(result))
 
         compressed = zlib.compress(encoded)
         self.assertEqual(zlib.decompress(compressed), encoded)
 
         chunks = []
 
         for i in range(len(compressed)):
             char = compressed[i:i + 1]
             if char == b'\\':
                 char = b'\\\\'
             action, meta = sendframe(reactor,
                 ffs(b'%d 2 encoded command-response continuation %s' %
                     (request.requestid, char)))
 
             self.assertEqual(action, b'responsedata')
             chunks.append(meta[b'data'])
             self.assertTrue(meta[b'expectmore'])
             self.assertFalse(meta[b'eos'])
 
         # zlib will have the full data decoded at this point, even though
         # we haven't flushed.
         self.assertEqual(b''.join(chunks), encoded)
 
         # End the stream for good measure.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-end command-response eos ' % request.requestid))
 
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
         self.assertFalse(meta[b'expectmore'])
         self.assertTrue(meta[b'eos'])
 
     def testzlibmultipleresponses(self):
         # We feed in zlib compressed data on the same stream but belonging to
         # 2 different requests. This tests our flushing behavior.
         reactor = framing.clientreactor(globalui, buffersends=False,
                                         hasmultiplesend=True)
 
         request1, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         request2, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         outstream = framing.outputstream(2)
         outstream.setencoder(globalui, b'zlib')
 
         response1 = b''.join(cborutil.streamencode({
             b'status': b'ok',
             b'extra': b'response1' * 10,
         }))
 
         response2 = b''.join(cborutil.streamencode({
             b'status': b'error',
             b'extra': b'response2' * 10,
         }))
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zlib"' %
                 request1.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         # Feeding partial data in won't get anything useful out.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response continuation %s' % (
                 request1.requestid, outstream.encode(response1))))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
 
         # But flushing data at both ends will get our original data.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' % (
                 request1.requestid, outstream.flush())))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], response1)
 
         # We should be able to reuse the compressor/decompressor for the
         # 2nd response.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response continuation %s' % (
                 request2.requestid, outstream.encode(response2))))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' % (
                 request2.requestid, outstream.flush())))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], response2)
 
     @unittest.skipUnless(zstd, 'zstd not available')
     def testzstd8mbencoding(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zstd-8mb"' %
                 request.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         result = {
             b'status': b'ok',
         }
         encoded = b''.join(cborutil.streamencode(result))
 
         encoder = framing.zstd8mbencoder(globalui)
         compressed = encoder.encode(encoded) + encoder.finish()
         self.assertEqual(zstd.ZstdDecompressor().decompress(
             compressed, max_output_size=len(encoded)), encoded)
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' %
                 (request.requestid, compressed)))
 
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], encoded)
 
     @unittest.skipUnless(zstd, 'zstd not available')
     def testzstd8mbencodingsinglebyteframes(self):
         reactor = framing.clientreactor(globalui, buffersends=False)
 
         request, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zstd-8mb"' %
                 request.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         result = {
             b'status': b'ok',
         }
         encoded = b''.join(cborutil.streamencode(result))
 
         compressed = zstd.ZstdCompressor().compress(encoded)
         self.assertEqual(zstd.ZstdDecompressor().decompress(compressed),
                          encoded)
 
         chunks = []
 
         for i in range(len(compressed)):
             char = compressed[i:i + 1]
             if char == b'\\':
                 char = b'\\\\'
             action, meta = sendframe(reactor,
                 ffs(b'%d 2 encoded command-response continuation %s' %
                     (request.requestid, char)))
 
             self.assertEqual(action, b'responsedata')
             chunks.append(meta[b'data'])
             self.assertTrue(meta[b'expectmore'])
             self.assertFalse(meta[b'eos'])
 
         # zstd decompressor will flush at frame boundaries.
         self.assertEqual(b''.join(chunks), encoded)
 
         # End the stream for good measure.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-end command-response eos ' % request.requestid))
 
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
         self.assertFalse(meta[b'expectmore'])
         self.assertTrue(meta[b'eos'])
 
     @unittest.skipUnless(zstd, 'zstd not available')
     def testzstd8mbmultipleresponses(self):
         # We feed in zstd compressed data on the same stream but belonging to
         # 2 different requests. This tests our flushing behavior.
         reactor = framing.clientreactor(globalui, buffersends=False,
                                         hasmultiplesend=True)
 
         request1, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         request2, action, meta = reactor.callcommand(b'foo', {})
         for f in meta[b'framegen']:
             pass
 
         outstream = framing.outputstream(2)
         outstream.setencoder(globalui, b'zstd-8mb')
 
         response1 = b''.join(cborutil.streamencode({
             b'status': b'ok',
             b'extra': b'response1' * 10,
         }))
 
         response2 = b''.join(cborutil.streamencode({
             b'status': b'error',
             b'extra': b'response2' * 10,
         }))
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 stream-begin stream-settings eos cbor:b"zstd-8mb"' %
                 request1.requestid))
 
         self.assertEqual(action, b'noop')
         self.assertEqual(meta, {})
 
         # Feeding partial data in won't get anything useful out.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response continuation %s' % (
                 request1.requestid, outstream.encode(response1))))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
 
         # But flushing data at both ends will get our original data.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' % (
                 request1.requestid, outstream.flush())))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], response1)
 
         # We should be able to reuse the compressor/decompressor for the
         # 2nd response.
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response continuation %s' % (
                 request2.requestid, outstream.encode(response2))))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], b'')
 
         action, meta = sendframe(reactor,
             ffs(b'%d 2 encoded command-response eos %s' % (
                 request2.requestid, outstream.flush())))
         self.assertEqual(action, b'responsedata')
         self.assertEqual(meta[b'data'], response2)
 
 if __name__ == '__main__':
+    if (3, 6, 0) <= sys.version_info <= (3, 6, 3):
+        # Python 3.6.0 through 3.6.3 inclusive shipped with
+        # https://bugs.python.org/issue31825 and we can't run these
+        # tests on those specific versions of Python. Sigh.
+        sys.exit(80)
     import silenttestrunner
     silenttestrunner.main(__name__)