tests/test-mq-qpush-fail

findrenames: Optimise "addremove -s100" by matching files by their SHA1 hashes.

We speed up 'findrenames' for the usecase when a user specifies they
want a similarity of 100% by matching files by their exact SHA1 hash
value. This reduces the number of comparisons required to find exact
matches from O(n^2) to O(n).

While it would be nice if we could just use mercurial's pre-calculated
SHA1 hash for existing files, this hash includes the file's ancestor
information making it unsuitable for our purposes. Instead, we calculate
the hash of old content from scratch.

The following benchmarks were taken on the current head of crew:

addremove 100% similarity:
  rm -rf *; hg up -C; mv tests tests.new
  hg --time addremove -s100 --dry-run

  before:  real 176.350 secs (user 128.890+0.000 sys 47.430+0.000)
  after:   real   2.130 secs (user   1.890+0.000 sys  0.240+0.000)

addremove 75% similarity:
  rm -rf *; hg up -C; mv tests tests.new; \
      for i in tests.new/*; do echo x >> $i; done
  hg --time addremove -s75  --dry-run

  before: real 264.560 secs (user 215.130+0.000 sys 49.410+0.000)
  after:  real 218.710 secs (user 172.790+0.000 sys 45.870+0.000)

#!/bin/sh

# Test that qpush cleans things up if it doesn't complete

echo "[extensions]" >> $HGRCPATH
echo "mq=" >> $HGRCPATH

hg init repo
cd repo

echo foo > foo
hg ci -Am 'add foo'

touch untracked-file
echo 'syntax: glob' > .hgignore
echo '.hgignore' >> .hgignore

hg qinit

echo '% test qpush on empty series'
hg qpush

hg qnew patch1
echo >> foo
hg qrefresh -m 'patch 1'

hg qnew patch2
echo bar > bar
hg add bar
hg qrefresh -m 'patch 2'

hg qnew --config 'mq.plain=true' bad-patch
echo >> foo
hg qrefresh

hg qpop -a

python -c 'print "\xe9"' > message
cat .hg/patches/bad-patch >> message
mv message .hg/patches/bad-patch

hg qpush -a && echo 'qpush succeded?!'

hg parents

echo '% bar should be gone; other unknown/ignored files should still be around'
hg status -A

echo '% preparing qpush of a missing patch'
hg qpop -a
hg qpush
rm .hg/patches/patch2
echo '% now we expect the push to fail, but it should NOT complain about patch1'
hg qpush

echo '% preparing qpush of missing patch with no patch applied'
hg qpop -a
rm .hg/patches/patch1
echo '% qpush should fail the same way as below'
hg qpush

true # happy ending