view tests/test-addremove-similar.t @ 39356:c8e4eae84808

narrow: add server logic to send cg while widening without ellipsis

Before this patch, if you try to widen a narrow clone without ellipsis enabled,
it will be broken and the exchange.pull() done by tracked command to widen the
clone will be no-op because no custom logic exists for this and server sees that
we have all csets and it says `no changes found`.

The widening with ellipsis send KILL for existing changegroups and send new
changegroups because of the change in ellipsis hash, but we can prevent that in
non-ellipsis cases.

This patch adds server side logic to send the changegroups for the changesets
which are on the client again with filelogs and manifests for the new includes.
This is a very starting implementation and we send changegroups and manifests
too while we can prevent them.

Following things can definitely be improved in the logic this patch adds:

  1) Send just the filelogs and treemanifests
  2) Send the filelogs only for the additions in the include

I tried 1) here but the code is coupled tightly and the way I was able to do
that was hacking into the changegroup generation code in a very dirty way, like
adding conditionals and preventing the yield.

This patch also adds a 'widen' kwarg to prevent other commands except widening
to go through that codepath.

The test changes demonstrate that the new implementation is correct and fixes
things.

Differential Revision: https://phab.mercurial-scm.org/D4383

  $ hg init rep; cd rep

  $ touch empty-file
  $ $PYTHON -c 'for x in range(10000): print(x)' > large-file

  $ hg addremove
  adding empty-file
  adding large-file

  $ hg commit -m A

  $ rm large-file empty-file
  $ $PYTHON -c 'for x in range(10,10000): print(x)' > another-file

  $ hg addremove -s50
  adding another-file
  removing empty-file
  removing large-file
  recording removal of large-file as rename to another-file (99% similar)

  $ hg commit -m B

comparing two empty files caused ZeroDivisionError in the past

  $ hg update -C 0
  2 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ rm empty-file
  $ touch another-empty-file
  $ hg addremove -s50
  adding another-empty-file
  removing empty-file

  $ cd ..

  $ hg init rep2; cd rep2

  $ $PYTHON -c 'for x in range(10000): print(x)' > large-file
  $ $PYTHON -c 'for x in range(50): print(x)' > tiny-file

  $ hg addremove
  adding large-file
  adding tiny-file

  $ hg commit -m A

  $ $PYTHON -c 'for x in range(70): print(x)' > small-file
  $ rm tiny-file
  $ rm large-file

  $ hg addremove -s50
  removing large-file
  adding small-file
  removing tiny-file
  recording removal of tiny-file as rename to small-file (82% similar)

  $ hg commit -m B

should be sorted by path for stable result

  $ for i in `$PYTHON $TESTDIR/seq.py 0 9`; do
  >     cp small-file $i
  > done
  $ rm small-file
  $ hg addremove
  adding 0
  adding 1
  adding 2
  adding 3
  adding 4
  adding 5
  adding 6
  adding 7
  adding 8
  adding 9
  removing small-file
  recording removal of small-file as rename to 0 (100% similar)
  recording removal of small-file as rename to 1 (100% similar)
  recording removal of small-file as rename to 2 (100% similar)
  recording removal of small-file as rename to 3 (100% similar)
  recording removal of small-file as rename to 4 (100% similar)
  recording removal of small-file as rename to 5 (100% similar)
  recording removal of small-file as rename to 6 (100% similar)
  recording removal of small-file as rename to 7 (100% similar)
  recording removal of small-file as rename to 8 (100% similar)
  recording removal of small-file as rename to 9 (100% similar)
  $ hg commit -m '10 same files'

pick one from many identical files

  $ cp 0 a
  $ rm `$PYTHON $TESTDIR/seq.py 0 9`
  $ hg addremove
  removing 0
  removing 1
  removing 2
  removing 3
  removing 4
  removing 5
  removing 6
  removing 7
  removing 8
  removing 9
  adding a
  recording removal of 0 as rename to a (100% similar)
  $ hg revert -aq

pick one from many similar files

  $ cp 0 a
  $ for i in `$PYTHON $TESTDIR/seq.py 0 9`; do
  >     echo $i >> $i
  > done
  $ hg commit -m 'make them slightly different'
  $ rm `$PYTHON $TESTDIR/seq.py 0 9`
  $ hg addremove -s50
  removing 0
  removing 1
  removing 2
  removing 3
  removing 4
  removing 5
  removing 6
  removing 7
  removing 8
  removing 9
  adding a
  recording removal of 0 as rename to a (99% similar)
  $ hg commit -m 'always the same file should be selected'

should all fail

  $ hg addremove -s foo
  abort: similarity must be a number
  [255]
  $ hg addremove -s -1
  abort: similarity must be between 0 and 100
  [255]
  $ hg addremove -s 1e6
  abort: similarity must be between 0 and 100
  [255]

  $ cd ..

Issue1527: repeated addremove causes Abort

  $ hg init rep3; cd rep3
  $ mkdir d
  $ echo a > d/a
  $ hg add d/a
  $ hg commit -m 1

  $ mv d/a d/b
  $ hg addremove -s80
  removing d/a
  adding d/b
  recording removal of d/a as rename to d/b (100% similar)
  $ hg debugstate
  r   0          0 1970-01-01 00:00:00 d/a
  a   0         -1 unset               d/b
  copy: d/a -> d/b
  $ mv d/b c

no copies found here (since the target isn't in d

  $ hg addremove -s80 d
  removing d/b

copies here

  $ hg addremove -s80
  adding c
  recording removal of d/a as rename to c (100% similar)

  $ cd ..