view tests/test-missing-capability.t @ 46495:5aac1a1a5beb

tagcache: distinguish between invalid and missing entries

The TortoiseHg repo has typically not had a newly applied tag accessible by name
for recent releases, for unknown reasons.  Deleting and rebuilding the tag cache
doesn't fix it, though deleting the cache and running `hg log -r $new_tag` does.
Eventually the situation does sort itself out for new clones from the server.
In an effort to figure out what the issue is, Pierre-Yves David suggested
listing these entries in the debug output more specifically.

This isn't complete yet- the second test change that says "missing" is more like
"invalid", since it was truncated.  The problem there is the code that reads the
raw array truncates any partial records and then fills it with 0xFF, which
signifies that it is missing.  As a side note, that means the check for the
length when validating an existing entry never fails.

Differential Revision: https://phab.mercurial-scm.org/D9811

Checking how hg behaves when one side of a pull/push doesn't support
some capability (because it's running an older hg version, usually).

  $ hg init repo1
  $ cd repo1
  $ echo a > a; hg add -q a; hg commit -q -m a
  $ hg bookmark a
  $ hg clone -q . ../repo2
  $ cd ../repo2

  $ touch $TESTTMP/disable-lookup.py
  $ disable_cap() {
  >   rm -f $TESTTMP/disable-lookup.pyc # pyc caching is buggy
  >   cat <<EOF > $TESTTMP/disable-lookup.py
  > from mercurial import extensions, wireprotov1server
  > def wcapabilities(orig, *args, **kwargs):
  >   cap = orig(*args, **kwargs)
  >   cap.remove(b'$1')
  >   return cap
  > extensions.wrapfunction(wireprotov1server, '_capabilities', wcapabilities)
  > EOF
  > }
  $ cat >> ../repo1/.hg/hgrc <<EOF
  > [extensions]
  > disable-lookup = $TESTTMP/disable-lookup.py
  > EOF
  $ cat >> .hg/hgrc <<EOF
  > [ui]
  > ssh = "$PYTHON" "$TESTDIR/dummyssh"
  > EOF

  $ hg pull ssh://user@dummy/repo1 -r tip -B a
  pulling from ssh://user@dummy/repo1
  no changes found

  $ disable_cap lookup
  $ hg pull ssh://user@dummy/repo1 -r tip -B a
  pulling from ssh://user@dummy/repo1
  abort: other repository doesn't support revision lookup, so a rev cannot be specified.
  [255]

  $ disable_cap pushkey
  $ hg pull ssh://user@dummy/repo1 -r tip -B a
  pulling from ssh://user@dummy/repo1
  abort: remote bookmark a not found!
  [10]