global: use raw strings for regular expressions with escapes
Escape sequences like \w, \s, and \d are technically invalid
in str/bytes. This became a deprecation warning in Python 3.6
(https://bugs.python.org/issue27364). Python 3.8 bumps it to
a SyntaxWarning (https://bugs.python.org/issue32912), which is
non-silent by default.
This commit changes a number of regular expressions to use
br'' so regular expression special sequences don't need \\
literals. This fixes roughly half of the SyntaxWarning we
see in the code base with Python 3.8.
Differential Revision: https://phab.mercurial-scm.org/D5815
from __future__ import absolute_import, print_function
import unittest
from mercurial import (
util,
wireprotoframing as framing,
)
ffs = framing.makeframefromhumanstring
class FrameHumanStringTests(unittest.TestCase):
def testbasic(self):
self.assertEqual(ffs(b'1 1 0 1 0 '),
b'\x00\x00\x00\x01\x00\x01\x00\x10')
self.assertEqual(ffs(b'2 4 0 1 0 '),
b'\x00\x00\x00\x02\x00\x04\x00\x10')
self.assertEqual(ffs(b'2 4 0 1 0 foo'),
b'\x03\x00\x00\x02\x00\x04\x00\x10foo')
def testcborint(self):
self.assertEqual(ffs(b'1 1 0 1 0 cbor:15'),
b'\x01\x00\x00\x01\x00\x01\x00\x10\x0f')
self.assertEqual(ffs(b'1 1 0 1 0 cbor:42'),
b'\x02\x00\x00\x01\x00\x01\x00\x10\x18*')
self.assertEqual(ffs(b'1 1 0 1 0 cbor:1048576'),
b'\x05\x00\x00\x01\x00\x01\x00\x10\x1a'
b'\x00\x10\x00\x00')
self.assertEqual(ffs(b'1 1 0 1 0 cbor:0'),
b'\x01\x00\x00\x01\x00\x01\x00\x10\x00')
self.assertEqual(ffs(b'1 1 0 1 0 cbor:-1'),
b'\x01\x00\x00\x01\x00\x01\x00\x10 ')
self.assertEqual(ffs(b'1 1 0 1 0 cbor:-342542'),
b'\x05\x00\x00\x01\x00\x01\x00\x10:\x00\x05:\r')
def testcborstrings(self):
self.assertEqual(ffs(b"1 1 0 1 0 cbor:b'foo'"),
b'\x04\x00\x00\x01\x00\x01\x00\x10Cfoo')
def testcborlists(self):
self.assertEqual(ffs(b"1 1 0 1 0 cbor:[None, True, False, 42, b'foo']"),
b'\n\x00\x00\x01\x00\x01\x00\x10\x85\xf6\xf5\xf4'
b'\x18*Cfoo')
def testcbordicts(self):
self.assertEqual(ffs(b"1 1 0 1 0 "
b"cbor:{b'foo': b'val1', b'bar': b'val2'}"),
b'\x13\x00\x00\x01\x00\x01\x00\x10\xa2'
b'CbarDval2CfooDval1')
class FrameTests(unittest.TestCase):
def testdataexactframesize(self):
data = util.bytesio(b'x' * framing.DEFAULT_MAX_FRAME_SIZE)
stream = framing.stream(1)
frames = list(framing.createcommandframes(stream, 1, b'command',
{}, data))
self.assertEqual(frames, [
ffs(b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command'}"),
ffs(b'1 1 0 command-data continuation %s' % data.getvalue()),
ffs(b'1 1 0 command-data eos ')
])
def testdatamultipleframes(self):
data = util.bytesio(b'x' * (framing.DEFAULT_MAX_FRAME_SIZE + 1))
stream = framing.stream(1)
frames = list(framing.createcommandframes(stream, 1, b'command', {},
data))
self.assertEqual(frames, [
ffs(b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command'}"),
ffs(b'1 1 0 command-data continuation %s' % (
b'x' * framing.DEFAULT_MAX_FRAME_SIZE)),
ffs(b'1 1 0 command-data eos x'),
])
def testargsanddata(self):
data = util.bytesio(b'x' * 100)
stream = framing.stream(1)
frames = list(framing.createcommandframes(stream, 1, b'command', {
b'key1': b'key1value',
b'key2': b'key2value',
b'key3': b'key3value',
}, data))
self.assertEqual(frames, [
ffs(b'1 1 stream-begin command-request new|have-data '
b"cbor:{b'name': b'command', b'args': {b'key1': b'key1value', "
b"b'key2': b'key2value', b'key3': b'key3value'}}"),
ffs(b'1 1 0 command-data eos %s' % data.getvalue()),
])
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 testtextoutputformattingstringtype(self):
"""Formatting string must be bytes."""
with self.assertRaisesRegex(ValueError, 'must use bytes formatting '):
list(framing.createtextoutputframe(None, 1, [
(b'foo'.decode('ascii'), [], [])]))
def testtextoutputargumentbytes(self):
with self.assertRaisesRegex(ValueError, 'must use bytes for argument'):
list(framing.createtextoutputframe(None, 1, [
(b'foo', [b'foo'.decode('ascii')], [])]))
def testtextoutputlabelbytes(self):
with self.assertRaisesRegex(ValueError, 'must use bytes for labels'):
list(framing.createtextoutputframe(None, 1, [
(b'foo', [], [b'foo'.decode('ascii')])]))
def testtextoutput1simpleatom(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo', [], [])]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo'}]"),
])
def testtextoutput2simpleatoms(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo', [], []),
(b'bar', [], []),
]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo'}, {b'msg': b'bar'}]")
])
def testtextoutput1arg(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo %s', [b'val1'], []),
]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s', b'args': [b'val1']}]")
])
def testtextoutput2arg(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo %s %s', [b'val', b'value'], []),
]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s %s', b'args': [b'val', b'value']}]")
])
def testtextoutput1label(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo', [], [b'label']),
]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo', b'labels': [b'label']}]")
])
def testargandlabel(self):
stream = framing.stream(1)
val = list(framing.createtextoutputframe(stream, 1, [
(b'foo %s', [b'arg'], [b'label']),
]))
self.assertEqual(val, [
ffs(b'1 1 stream-begin text-output 0 '
b"cbor:[{b'msg': b'foo %s', b'args': [b'arg'], "
b"b'labels': [b'label']}]")
])
if __name__ == '__main__':
import silenttestrunner
silenttestrunner.main(__name__)