view tests/test-issue2137.t @ 40623:7c5a922be068

tests: document a known failing interaction between narrow and lfs

This is one of the two remaining aborts I found looking into issue5794.  I've
got no idea what's wrong with the hook, since the changes there fixed the other
two problems noted in that bug report.  It seems like it might go away when the
narrow issue is fixed, but let's make sure this doesn't get lost.

The stacktrace for the hook seems to indicate that the missing file *is* in ctx:

  remote: Traceback (most recent call last):
  remote:   File "c:\Users\Matt\projects\hg\hgext\lfs\__init__.py", line 253, in checkrequireslfs
  remote:     if any(f in ctx and match(f) and ctx[f].islfs() for f in ctx.files()):
  remote:   File "c:\Users\Matt\projects\hg\hgext\lfs\__init__.py", line 253, in <genexpr>
  remote:     if any(f in ctx and match(f) and ctx[f].islfs() for f in ctx.files()):
  remote:   File "c:\Users\Matt\projects\hg\hgext\lfs\wrapper.py", line 191, in filectxislfs
  remote:     return _islfs(self.filelog(), self.filenode())
  remote:   File "c:\Users\Matt\projects\hg\mercurial\context.py", line 631, in filenode
  remote:     return self._filenode
  remote:   File "c:\Users\Matt\projects\hg\mercurial\util.py", line 1528, in __get__
  remote:     result = self.func(obj)
  remote:   File "c:\Users\Matt\projects\hg\mercurial\context.py", line 579, in _filenode
  remote:     return self._filelog.lookup(self._fileid)
  remote:   File "c:\Users\Matt\projects\hg\mercurial\filelog.py", line 68, in lookup
  remote:     self._revlog.indexfile)
  remote:   File "c:\Users\Matt\projects\hg\mercurial\utils\storageutil.py", line 218, in fileidlookup
  remote:     raise error.LookupError(fileid, identifier, _('no match found'))
  remote: LookupError: data/inside2/f.i@f59b4e021835: no match found

https://bz.mercurial-scm.org/2137

Setup:

create a little extension that has 3 side-effects:
1) ensure changelog data is not inlined
2) make revlog to use lazyparser
3) test that repo.lookup() works
1 and 2 are preconditions for the bug; 3 is the bug.

  $ cat > commitwrapper.py <<EOF
  > from mercurial import extensions, node, revlog
  > 
  > def reposetup(ui, repo):
  >     class wraprepo(repo.__class__):
  >         def commit(self, *args, **kwargs):
  >             result = super(wraprepo, self).commit(*args, **kwargs)
  >             tip1 = node.short(repo.changelog.tip())
  >             tip2 = node.short(repo.lookup(tip1))
  >             assert tip1 == tip2
  >             ui.write(b'new tip: %s\n' % tip1)
  >             return result
  >     repo.__class__ = wraprepo
  > 
  > def extsetup(ui):
  >     revlog._maxinline = 8             # split out 00changelog.d early
  >     revlog._prereadsize = 8           # use revlog.lazyparser
  > EOF

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > commitwrapper = `pwd`/commitwrapper.py
  > EOF

  $ hg init repo1
  $ cd repo1
  $ echo a > a
  $ hg commit -A -m'add a with a long commit message to make the changelog a bit bigger'
  adding a
  new tip: 553596fad57b

Test that new changesets are visible to repo.lookup():

  $ echo a >> a
  $ hg commit -m'one more commit to demonstrate the bug'
  new tip: 799ae3599e0e

  $ hg tip
  changeset:   1:799ae3599e0e
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     one more commit to demonstrate the bug
  

  $ cd ..