view tests/test-pull-pull-corruption.t @ 22300:35ab037de989

convert: introduce --full for converting all files

Convert will normally only process files that were changed in a source
revision, apply the filemap, and record it has a change in the target
repository. (If it ends up not really changing anything, nothing changes.)

That means that _if_ the filemap is changed before continuing an incremental
convert, the change will only kick in when the files it affects are modified in
a source revision and thus processed.

With --full, convert will make a full conversion every time and process
all files in the source repo and remove target repo files that shouldn't be
there. Filemap changes will thus kick in on the first converted revision, no
matter what is changed.

This flag should in most cases not make any difference but will make convert
significantly slower.

Other names has been considered for this feature, such as "resync", "sync",
"checkunmodified", "all" or "allfiles", but I found that they were less obvious
and required more explanation than "full" and were harder to describe
consistently.

Corrupt an hg repo with two pulls.
create one repo with a long history

  $ hg init source1
  $ cd source1
  $ touch foo
  $ hg add foo
  $ for i in 1 2 3 4 5 6 7 8 9 10; do
  >     echo $i >> foo
  >     hg ci -m $i
  > done
  $ cd ..

create one repo with a shorter history

  $ hg clone -r 0 source1 source2
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd source2
  $ echo a >> foo
  $ hg ci -m a
  $ cd ..

create a third repo to pull both other repos into it

  $ hg init corrupted
  $ cd corrupted

use a hook to make the second pull start while the first one is still running

  $ echo '[hooks]' >> .hg/hgrc
  $ echo 'prechangegroup = sleep 5' >> .hg/hgrc

start a pull...

  $ hg pull ../source1 > pull.out 2>&1 &

... and start another pull before the first one has finished

  $ sleep 1
  $ hg pull ../source2 2>/dev/null
  pulling from ../source2
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ cat pull.out
  pulling from ../source1
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 10 changesets with 10 changes to 1 files
  (run 'hg update' to get a working copy)

see the result

  $ wait
  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
  1 files, 11 changesets, 11 total revisions

  $ cd ..