view tests/test-annotate.py @ 35930:83d67257ba90

tests: add low-level SSH protocol tests

We don't really have good low-level tests for the behavior of the SSH
wire protocol. This commit attempts to establish some.

The added tests consist of a mixture of starting a server
with `hg serve --stdio` and sending bytes to it and using
`hg debugpeer` to go through the official client code. Having
insight into what raw bytes are exchanged as well as what the peer
does is useful.

We also introduce a test extension for modifying the behavior of
the SSH server and peer. For example, we change the server to
not recognize the "hello" command, simulating behavior of <0.9.1
servers.

These tests are generally useful to have. But the impetus for creating
them now is they will be needed for verifying behavior of old clients
and servers when a new SSH protocol is introduced.

Differential Revision: https://phab.mercurial-scm.org/D2026

# no-check-commit because of serve_forever()

from __future__ import absolute_import
from __future__ import print_function

import unittest

from mercurial import (
    mdiff,
)
from mercurial.context import (
    annotateline,
    _annotatepair,
)

class AnnotateTests(unittest.TestCase):
    """Unit tests for annotate code."""

    def testannotatepair(self):
        self.maxDiff = None # camelcase-required

        oldfctx = b'old'
        p1fctx, p2fctx, childfctx = b'p1', b'p2', b'c'
        olddata = b'a\nb\n'
        p1data = b'a\nb\nc\n'
        p2data = b'a\nc\nd\n'
        childdata = b'a\nb2\nc\nc2\nd\n'
        diffopts = mdiff.diffopts()

        def decorate(text, rev):
            return ([annotateline(fctx=rev, lineno=i)
                     for i in xrange(1, text.count(b'\n') + 1)],
                    text)

        # Basic usage

        oldann = decorate(olddata, oldfctx)
        p1ann = decorate(p1data, p1fctx)
        p1ann = _annotatepair([oldann], p1fctx, p1ann, False, diffopts)
        self.assertEqual(p1ann[0], [
            annotateline('old', 1),
            annotateline('old', 2),
            annotateline('p1', 3),
        ])

        p2ann = decorate(p2data, p2fctx)
        p2ann = _annotatepair([oldann], p2fctx, p2ann, False, diffopts)
        self.assertEqual(p2ann[0], [
            annotateline('old', 1),
            annotateline('p2', 2),
            annotateline('p2', 3),
        ])

        # Test with multiple parents (note the difference caused by ordering)

        childann = decorate(childdata, childfctx)
        childann = _annotatepair([p1ann, p2ann], childfctx, childann, False,
                                 diffopts)
        self.assertEqual(childann[0], [
            annotateline('old', 1),
            annotateline('c', 2),
            annotateline('p2', 2),
            annotateline('c', 4),
            annotateline('p2', 3),
        ])

        childann = decorate(childdata, childfctx)
        childann = _annotatepair([p2ann, p1ann], childfctx, childann, False,
                                 diffopts)
        self.assertEqual(childann[0], [
            annotateline('old', 1),
            annotateline('c', 2),
            annotateline('p1', 3),
            annotateline('c', 4),
            annotateline('p2', 3),
        ])

        # Test with skipchild (note the difference caused by ordering)

        childann = decorate(childdata, childfctx)
        childann = _annotatepair([p1ann, p2ann], childfctx, childann, True,
                                 diffopts)
        self.assertEqual(childann[0], [
            annotateline('old', 1),
            annotateline('old', 2, True),
            # note that this line was carried over from earlier so it is *not*
            # marked skipped
            annotateline('p2', 2),
            annotateline('p2', 2, True),
            annotateline('p2', 3),
        ])

        childann = decorate(childdata, childfctx)
        childann = _annotatepair([p2ann, p1ann], childfctx, childann, True,
                                 diffopts)
        self.assertEqual(childann[0], [
            annotateline('old', 1),
            annotateline('old', 2, True),
            annotateline('p1', 3),
            annotateline('p1', 3, True),
            annotateline('p2', 3),
        ])

if __name__ == '__main__':
    import silenttestrunner
    silenttestrunner.main(__name__)