view tests/test-simple-update.t @ 50391:12f13b13f414 stable

revlog: avoid possible collision between directory and temporary index

Since 6.4, we create a temporary index file to write the split data without
overwriting the inline version too early. However, the store encoding does not
prevent these new `.i.s` file to collide with a directory with the same name.
While the odds for such a collision to happens are fairly low, the collision
would prevent Mercurial from working.

The store encoding have a mitigation solution in place to prevent such
collisions from happening for `.i` and `.d` files, but not for other extensions.
We cannot update this encoding scheme to solve the issue since it would diverge
from older version of Mercurial.

Instead, we create an alternative directory tree dedicated to such files.
The use of the `.i` extension combined with store encoding will prevent
collisions there.

  $ hg init test
  $ cd test
  $ echo foo>foo
  $ hg addremove
  adding foo
  $ hg commit -m "1"

  $ hg verify -q

  $ hg clone . ../branch
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ../branch
  $ hg co
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo bar>>foo
  $ hg commit -m "2" -d '1 0'

  $ cd ../test

  $ hg pull ../branch
  pulling from ../branch
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  new changesets 84b9316f7b31
  1 local changesets published
  (run 'hg update' to get a working copy)

  $ hg verify -q

  $ hg co
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ cat foo
  foo
  bar

  $ hg manifest --debug
  6f4310b00b9a147241b071a60c28a650827fb03d 644   foo

update to rev 0 with a date

  $ hg upd -d foo 0
  abort: you can't specify a revision and a date
  [10]

update by date

  $ hg update -d '<1970-01-01 00:00:02 +0000'
  found revision 1 from Thu Jan 01 00:00:01 1970 +0000
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg update -d '<1970-01-01 00:00:01 +0000'
  found revision 1 from Thu Jan 01 00:00:01 1970 +0000
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg update -d '<1970-01-01 00:00:00 +0000'
  found revision 0 from Thu Jan 01 00:00:00 1970 +0000
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg update -d '>1970-01-01 00:00:02 +0000'
  abort: revision matching date not found
  [10]
  $ hg update -d '>1970-01-01 00:00:01 +0000'
  found revision 1 from Thu Jan 01 00:00:01 1970 +0000
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg update -d '>1970-01-01 00:00:00 +0000'
  found revision 1 from Thu Jan 01 00:00:01 1970 +0000
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved

update to default destination (with empty revspec)

  $ hg update -q null
  $ hg update
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  84b9316f7b31 tip

  $ hg update -q null
  $ hg update -r ''
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  84b9316f7b31 tip

  $ hg update -q null
  $ hg update ''
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg id
  84b9316f7b31 tip

  $ cd ..

update with worker processes

#if no-windows

  $ cat <<EOF > forceworker.py
  > from mercurial import extensions, worker
  > def nocost(orig, ui, costperop, nops, threadsafe=True):
  >     return worker._numworkers(ui) > 1
  > def uisetup(ui):
  >     extensions.wrapfunction(worker, 'worthwhile', nocost)
  > EOF

  $ hg init worker
  $ cd worker
  $ cat <<EOF >> .hg/hgrc
  > [extensions]
  > forceworker = $TESTTMP/forceworker.py
  > [worker]
  > numcpus = 4
  > EOF
  $ for i in `"$PYTHON" $TESTDIR/seq.py 1 100`; do
  >   echo $i > $i
  > done
  $ hg ci -qAm 'add 100 files'

  $ hg update null
  0 files updated, 0 files merged, 100 files removed, 0 files unresolved
  $ hg update -v | grep 100
  getting 100
  100 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg status

  $ cd ..

#endif