tests/test-dirstate.t

hg-cpython: fallback when encountering an unknown matcher

At this point in the process, nothing user-visible has happened, it is still
safe to fallback. This can happen now that we're going to be using
"container matchers" like unionmatcher and intersectionmatcher.

This is easier and less error-prone than recursive checking beforehand since
only the presence of a transformation case will allow the process to continue.

#testcases dirstate-v1 dirstate-v2

#if dirstate-v2
  $ cat >> $HGRCPATH << EOF
  > [format]
  > use-dirstate-v2=1
  > [storage]
  > dirstate-v2.slow-path=allow
  > EOF
#endif

------ Test dirstate._dirs refcounting

  $ hg init t
  $ cd t
  $ mkdir -p a/b/c/d
  $ touch a/b/c/d/x
  $ touch a/b/c/d/y
  $ touch a/b/c/d/z
  $ hg ci -Am m
  adding a/b/c/d/x
  adding a/b/c/d/y
  adding a/b/c/d/z
  $ hg mv a z
  moving a/b/c/d/x to z/b/c/d/x
  moving a/b/c/d/y to z/b/c/d/y
  moving a/b/c/d/z to z/b/c/d/z

Test name collisions

  $ rm z/b/c/d/x
  $ mkdir z/b/c/d/x
  $ touch z/b/c/d/x/y
  $ hg add z/b/c/d/x/y
  abort: file 'z/b/c/d/x' in dirstate clashes with 'z/b/c/d/x/y'
  [255]
  $ rm -rf z/b/c/d
  $ touch z/b/c/d
  $ hg add z/b/c/d
  abort: directory 'z/b/c/d' already in dirstate
  [255]

  $ cd ..

Issue1790: dirstate entry locked into unset if file mtime is set into
the future

Prepare test repo:

  $ hg init u
  $ cd u
  $ echo a > a
  $ hg add
  adding a
  $ hg ci -m1

Set mtime of a into the future:

  $ touch -t 203101011200 a

Status must not set a's entry to unset (issue1790):

  $ hg status
  $ hg debugstate
  n 644          2 2031-01-01 12:00:00 a

Test modulo storage/comparison of absurd dates:

#if no-aix
  $ touch -t 195001011200 a
  $ hg st
  $ hg debugstate
  n 644          2 2018-01-19 15:14:08 a
#endif

Verify that exceptions during a dirstate change leave the dirstate
coherent (issue4353)

  $ cat > ../dirstateexception.py <<EOF
  > from mercurial import (
  >   error,
  >   extensions,
  >   mergestate as mergestatemod,
  > )
  > 
  > def wraprecordupdates(*args):
  >     raise error.Abort(b"simulated error while recording dirstateupdates")
  > 
  > def reposetup(ui, repo):
  >     extensions.wrapfunction(mergestatemod, 'recordupdates',
  >                             wraprecordupdates)
  > EOF

  $ hg rm a
  $ hg commit -m 'rm a'
  $ echo "[extensions]" >> .hg/hgrc
  $ echo "dirstateex=../dirstateexception.py" >> .hg/hgrc
  $ hg up 0
  abort: simulated error while recording dirstateupdates
  [255]
  $ hg log -r . -T '{rev}\n'
  1
  $ hg status
  ? a

#if dirstate-v2
Check that folders that are prefixes of others do not throw the packer into an
infinite loop.

  $ cd ..
  $ hg init infinite-loop
  $ cd infinite-loop
  $ mkdir hgext3rd hgext
  $ touch hgext3rd/__init__.py hgext/zeroconf.py
  $ hg commit -Aqm0

  $ hg st -c
  C hgext/zeroconf.py
  C hgext3rd/__init__.py

  $ cd ..

Check that the old dirstate data file is removed correctly and the new one is
valid.

  $ dirstate_data_files () {
  >   find .hg -maxdepth 1 -name "dirstate.*"
  > }

  $ find_dirstate_uuid () {
  >   hg debugstate --docket | grep uuid | sed 's/.*uuid: \(.*\)/\1/'
  > }

  $ find_dirstate_data_size () {
  >   hg debugstate --docket | grep 'size of dirstate data' | sed 's/.*size of dirstate data: \(.*\)/\1/'
  > }

  $ dirstate_uuid_has_not_changed () {
  >   # Non-Rust always rewrites the whole dirstate
  >   if [ $# -eq 1 ] || ([ -n "$HGMODULEPOLICY" ] && [ -z "${HGMODULEPOLICY##*rust*}" ]) || [ -n "$RHG_INSTALLED_AS_HG" ]; then
  >     test $current_uid = $(find_dirstate_uuid)
  >   else
  >     echo "not testing because using Python implementation"
  >   fi
  > }

  $ cd ..
  $ hg init append-mostly
  $ cd append-mostly
  $ mkdir dir dir2
  $ touch dir/a dir/b dir/c dir/d dir/e dir2/f
  $ hg commit -Aqm initial
  $ hg st
  $ dirstate_data_files | wc -l
   *1 (re)
  $ current_uid=$(find_dirstate_uuid)

Nothing changes here

  $ hg st
  $ dirstate_data_files | wc -l
   *1 (re)
  $ dirstate_uuid_has_not_changed
  not testing because using Python implementation (no-rust no-rhg !)

Trigger an append with a small change

  $ current_data_size=$(find_dirstate_data_size)
  $ rm dir2/f
  $ hg st
  ! dir2/f
  $ dirstate_data_files | wc -l
   *1 (re)
  $ dirstate_uuid_has_not_changed
  not testing because using Python implementation (no-rust no-rhg !)
  $ new_data_size=$(find_dirstate_data_size)
  $ [ "$current_data_size" -eq "$new_data_size" ]; echo $?
  0 (no-rust no-rhg !)
  1 (rust !)
  1 (no-rust rhg !)

Unused bytes counter is non-0 when appending
  $ touch file
  $ hg add file
  $ current_uid=$(find_dirstate_uuid)

Trigger a rust/rhg run which updates the unused bytes value
  $ hg st
  A file
  ! dir2/f
  $ dirstate_data_files | wc -l
   *1 (re)
  $ dirstate_uuid_has_not_changed
  not testing because using Python implementation (no-rust no-rhg !)

  $ hg debugstate --docket | grep unused
  number of unused bytes: 0 (no-rust no-rhg !)
  number of unused bytes: [1-9]\d* (re) (rhg no-rust !)
  number of unused bytes: [1-9]\d* (re) (rust no-rhg !)
  number of unused bytes: [1-9]\d* (re) (rust rhg !)

Delete most of the dirstate to trigger a non-append
  $ hg rm dir/a dir/b dir/c dir/d
  $ dirstate_data_files | wc -l
   *1 (re)
  $ dirstate_uuid_has_not_changed also-if-python
  [1]

Check that unused bytes counter is reset when creating a new docket

  $ hg debugstate --docket | grep unused
  number of unused bytes: 0

#endif

  $ cd ..