tests/test-mq-caches.t

hook: disable demandimport before importing hooks

This solved an obscure bug for me. In upgrading Distribute on the server, a
patch was added to has a try: import a except ImportError thing that's only
supposed to work with Python 3.3. I'm using 2.7. My hook failed with an
ImportError because of this. It seems kind of sensible to turn off
demandimport before importing the hook, since the except ImportError pattern
is used quite a bit in Python code (including in other Distribute code).

  $ branches=.hg/cache/branchheads
  $ echo '[extensions]' >> $HGRCPATH
  $ echo 'mq =' >> $HGRCPATH

  $ show_branch_cache()
  > {
  >     # force cache (re)generation
  >     hg log -r does-not-exist 2> /dev/null
  >     hg log -r tip --template 'tip: {rev}\n'
  >     if [ -f $branches ]; then
  >       sort $branches
  >     else
  >       echo No branch cache
  >     fi
  >     if [ "$1" = 1 ]; then
  >       for b in foo bar; do
  >         hg log -r $b --template "branch $b: "'{rev}\n'
  >       done
  >     fi
  > }

  $ hg init a
  $ cd a
  $ hg qinit -c


mq patch on an empty repo

  $ hg qnew -d '0 0' p1
  $ show_branch_cache
  tip: 0
  No branch cache

  $ echo > pfile
  $ hg add pfile
  $ hg qrefresh -m 'patch 1'
  $ show_branch_cache
  tip: 0
  d986d5caac23a7d44a46efc0ddaf5eb9665844cf 0
  d986d5caac23a7d44a46efc0ddaf5eb9665844cf default

some regular revisions

  $ hg qpop
  popping p1
  patch queue now empty
  $ echo foo > foo
  $ hg add foo
  $ echo foo > .hg/branch
  $ hg ci -m 'branch foo'

  $ echo bar > bar
  $ hg add bar
  $ echo bar > .hg/branch
  $ hg ci -m 'branch bar'
  $ show_branch_cache
  tip: 1
  c229711f16da3d7591f89b1b8d963b79bda22714 1
  c229711f16da3d7591f89b1b8d963b79bda22714 bar
  dc25e3827021582e979f600811852e36cbe57341 foo

add some mq patches

  $ hg qpush
  applying p1
  now at: p1
  $ show_branch_cache
  tip: 2
  c229711f16da3d7591f89b1b8d963b79bda22714 1
  c229711f16da3d7591f89b1b8d963b79bda22714 bar
  dc25e3827021582e979f600811852e36cbe57341 foo

  $ hg qnew -d '0 0' p2
  $ echo foo > .hg/branch
  $ echo foo2 >> foo
  $ hg qrefresh -m 'patch 2'
  $ show_branch_cache 1
  tip: 3
  982611f6955f9c48d3365decea203217c945ef0d 2
  982611f6955f9c48d3365decea203217c945ef0d bar
  dc25e3827021582e979f600811852e36cbe57341 foo
  branch foo: 3
  branch bar: 2

removing the cache

  $ rm $branches
  $ show_branch_cache 1
  tip: 3
  c229711f16da3d7591f89b1b8d963b79bda22714 1
  c229711f16da3d7591f89b1b8d963b79bda22714 bar
  dc25e3827021582e979f600811852e36cbe57341 foo
  branch foo: 3
  branch bar: 2

importing rev 1 (the cache now ends in one of the patches)

  $ hg qimport -r 1 -n p0
  $ show_branch_cache 1
  tip: 3
  c229711f16da3d7591f89b1b8d963b79bda22714 1
  c229711f16da3d7591f89b1b8d963b79bda22714 bar
  dc25e3827021582e979f600811852e36cbe57341 foo
  branch foo: 3
  branch bar: 2
  $ hg log -r qbase --template 'qbase: {rev}\n'
  qbase: 1

detect an invalid cache

  $ hg qpop -a
  popping p2
  popping p1
  popping p0
  patch queue now empty
  $ hg qpush -a
  applying p0
  applying p1
  applying p2
  now at: p2
  $ show_branch_cache
  tip: 3
  dc25e3827021582e979f600811852e36cbe57341 0
  dc25e3827021582e979f600811852e36cbe57341 foo

  $ cd ..