templates: add filter to reverse list
The filter supports only lists because for lists, it’s straightforward to
implement. Reversing text doesn’t seem very useful and is hard to implement.
Reversing the bytes would break multi-bytes encodings. Reversing the code
points would break characters consisting of multiple code points. Reversing
graphemes is non-trivial without using a library not included in the standard
library.
import io
import unittest
import silenttestrunner
from mercurial import (
wireprotoserver,
wireprotov1server,
)
from mercurial.utils import procutil
class SSHServerGetArgsTests(unittest.TestCase):
def testparseknown(self):
tests = [
(b'* 0\nnodes 0\n', [b'', {}]),
(
b'* 0\nnodes 40\n1111111111111111111111111111111111111111\n',
[b'1111111111111111111111111111111111111111', {}],
),
]
for input, expected in tests:
self.assertparse(b'known', input, expected)
def assertparse(self, cmd, input, expected):
server = mockserver(input)
proto = wireprotoserver.sshv1protocolhandler(
server._ui, server._fin, server._fout
)
_func, spec = wireprotov1server.commands[cmd]
self.assertEqual(proto.getargs(spec), expected)
def mockserver(inbytes):
ui = mockui(inbytes)
repo = mockrepo(ui)
return wireprotoserver.sshserver(ui, repo)
class mockrepo:
def __init__(self, ui):
self.ui = ui
class mockui:
def __init__(self, inbytes):
self.fin = io.BytesIO(inbytes)
self.fout = io.BytesIO()
self.ferr = io.BytesIO()
def protectfinout(self):
return self.fin, self.fout
def restorefinout(self, fin, fout):
pass
if __name__ == '__main__':
# Don't call into msvcrt to set BytesIO to binary mode
procutil.setbinary = lambda fp: True
silenttestrunner.main(__name__)