view tests/test-basic.t @ 31579:3a383caa97f4

similar: sort files not by object id but by path for stable result

Perhaps the original implementation would want to sort added/removed files
alphabetically, but actually it did sort fctx objects by memory location.

This patch removes the use of set()s in order to preserve the order of
added/removed files. addedfiles.remove() becomes quadratic, but its cost
appears not dominant. Anyway, the quadratic behavior will be eliminated by
the next patch.

Benchmark with 50k added/removed files, on tmpfs:

  $ mkdir src
  $ for n in `seq 0 49`; do
  >     mkdir `printf src/%02d $n`
  > done

  $ for n in `seq 0 49999`; do
  >     f=`printf src/%02d/%05d $(($n/1000)) $n`
  >     dd if=/dev/urandom of=$f bs=8k count=1 status=none
  > done

  $ hg ci -qAm 'add 50k files of random content'
  $ mv src dest

  $ hg addremove --dry-run --time -q

  original:   real 16.550 secs (user 15.000+0.000 sys 1.540+0.000)
  this patch: real 16.730 secs (user 15.280+0.000 sys 1.440+0.000)

Create a repository:

  $ hg config
  defaults.backout=-d "0 0"
  defaults.commit=-d "0 0"
  defaults.shelve=--date "0 0"
  defaults.tag=-d "0 0"
  devel.all-warnings=true
  largefiles.usercache=$TESTTMP/.cache/largefiles (glob)
  ui.slash=True
  ui.interactive=False
  ui.mergemarkers=detailed
  ui.promptecho=True
  web.address=localhost
  web\.ipv6=(?:True|False) (re)
  $ hg init t
  $ cd t

Make a changeset:

  $ echo a > a
  $ hg add a
  $ hg commit -m test

This command is ancient:

  $ hg history
  changeset:   0:acb14030fe0a
  tag:         tip
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  summary:     test
  

Verify that updating to revision 0 via commands.update() works properly

  $ cat <<EOF > update_to_rev0.py
  > from mercurial import ui, hg, commands
  > myui = ui.ui.load()
  > repo = hg.repository(myui, path='.')
  > commands.update(myui, repo, rev=0)
  > EOF
  $ hg up null
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ python ./update_to_rev0.py
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg identify -n
  0


Poke around at hashes:

  $ hg manifest --debug
  b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 644   a

  $ hg cat a
  a

Verify should succeed:

  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
  1 files, 1 changesets, 1 total revisions

At the end...

  $ cd ..