tests/test-convert-datesort.t

checknlink: return False if .hgtmp file preexists (issue2517)

If os_link fails on Windows, errno is always errno.EINVAL,
so we can't really say if the testlink could not be created
because (a) the FS doesn't support hardlinks or (b) there
is a leaked .hgtmp file lying around from a previous crashed
run.

So let's err on the safe side, keep the code simple and assume
we can't detect hardlinks in both cases.

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > convert=
  > graphlog=
  > EOF
  $ hg init t
  $ cd t
  $ echo a >> a
  $ hg ci -Am a0 -d '1 0'
  adding a
  $ hg branch brancha
  marked working directory as branch brancha
  $ echo a >> a
  $ hg ci -m a1 -d '2 0'
  $ echo a >> a
  $ hg ci -m a2 -d '3 0'
  $ echo a >> a
  $ hg ci -m a3 -d '4 0'
  $ hg up -C 0
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch branchb
  marked working directory as branch branchb
  $ echo b >> b
  $ hg ci -Am b0 -d '6 0'
  adding b
  $ hg up -C brancha
  1 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo a >> a
  $ hg ci -m a4 -d '5 0'
  $ echo a >> a
  $ hg ci -m a5 -d '7 0'
  $ echo a >> a
  $ hg ci -m a6 -d '8 0'
  $ hg up -C branchb
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo b >> b
  $ hg ci -m b1 -d '9 0'
  $ cd ..

convert with datesort

  $ hg convert --datesort t t-datesort
  initializing destination t-datesort repository
  scanning source...
  sorting...
  converting...
  8 a0
  7 a1
  6 a2
  5 a3
  4 a4
  3 b0
  2 a5
  1 a6
  0 b1

graph converted repo

  $ hg -R t-datesort glog --template '{rev} "{desc}"\n'
  o  8 "b1"
  |
  | o  7 "a6"
  | |
  | o  6 "a5"
  | |
  o |  5 "b0"
  | |
  | o  4 "a4"
  | |
  | o  3 "a3"
  | |
  | o  2 "a2"
  | |
  | o  1 "a1"
  |/
  o  0 "a0"
  

convert with datesort (default mode)

  $ hg convert t t-sourcesort
  initializing destination t-sourcesort repository
  scanning source...
  sorting...
  converting...
  8 a0
  7 a1
  6 a2
  5 a3
  4 b0
  3 a4
  2 a5
  1 a6
  0 b1

graph converted repo

  $ hg -R t-sourcesort glog --template '{rev} "{desc}"\n'
  o  8 "b1"
  |
  | o  7 "a6"
  | |
  | o  6 "a5"
  | |
  | o  5 "a4"
  | |
  o |  4 "b0"
  | |
  | o  3 "a3"
  | |
  | o  2 "a2"
  | |
  | o  1 "a1"
  |/
  o  0 "a0"