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__)