tests/test-fastannotate-hg.t

rust-re2: add wrapper for calling Re2 from Rust

This assumes that Re2 is installed following Google's guide. I am not sure
how we want to integrate it in the project, but I think a follow-up patch would
be more appropriate for such work.
As it stands, *not* having Re2 installed results in a compilation error, which
is a problem as it breaks install compatibility. Hence, this is gated behind
a non-default `with-re2` compilation feature.

Differential Revision: https://phab.mercurial-scm.org/D7910

(this file is backported from core hg tests/test-annotate.t)

  $ cat >> $HGRCPATH << EOF
  > [ui]
  > merge = :merge3
  > [diff]
  > git=1
  > [extensions]
  > fastannotate=
  > [fastannotate]
  > modes=fctx
  > forcefollow=False
  > mainbranch=.
  > EOF

init

  $ hg init repo
  $ cd repo

commit

  $ echo 'a' > a
  $ hg ci -A -m test -u nobody -d '1 0'
  adding a

annotate -c

  $ hg annotate -c a
  8435f90966e4: a

annotate -cl

  $ hg annotate -cl a
  8435f90966e4:1: a

annotate -d

  $ hg annotate -d a
  Thu Jan 01 00:00:01 1970 +0000: a

annotate -n

  $ hg annotate -n a
  0: a

annotate -nl

  $ hg annotate -nl a
  0:1: a

annotate -u

  $ hg annotate -u a
  nobody: a

annotate -cdnu

  $ hg annotate -cdnu a
  nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000: a

annotate -cdnul

  $ hg annotate -cdnul a
  nobody 0 8435f90966e4 Thu Jan 01 00:00:01 1970 +0000:1: a

annotate (JSON)

  $ hg annotate -Tjson a
  [
   {
    "lines": [{"line": "a\n", "rev": 0}],
    "path": "a"
   }
  ]

  $ hg annotate -Tjson -cdfnul a
  [
   {
    "lines": [{"date": [1.0, 0], "line": "a\n", "lineno": 1, "node": "8435f90966e442695d2ded29fdade2bac5ad8065", "path": "a", "rev": 0, "user": "nobody"}],
    "path": "a"
   }
  ]

  $ cat <<EOF >>a
  > a
  > a
  > EOF
  $ hg ci -ma1 -d '1 0'
  $ hg cp a b
  $ hg ci -mb -d '1 0'
  $ cat <<EOF >> b
  > b4
  > b5
  > b6
  > EOF
  $ hg ci -mb2 -d '2 0'

annotate -n b

  $ hg annotate -n b
  0: a
  1: a
  1: a
  3: b4
  3: b5
  3: b6

annotate --no-follow b

  $ hg annotate --no-follow b
  2: a
  2: a
  2: a
  3: b4
  3: b5
  3: b6

annotate -nl b

  $ hg annotate -nl b
  0:1: a
  1:2: a
  1:3: a
  3:4: b4
  3:5: b5
  3:6: b6

annotate -nf b

  $ hg annotate -nf b
  0 a: a
  1 a: a
  1 a: a
  3 b: b4
  3 b: b5
  3 b: b6

annotate -nlf b

  $ hg annotate -nlf b
  0 a:1: a
  1 a:2: a
  1 a:3: a
  3 b:4: b4
  3 b:5: b5
  3 b:6: b6

  $ hg up -C 2
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cat <<EOF >> b
  > b4
  > c
  > b5
  > EOF
  $ hg ci -mb2.1 -d '2 0'
  created new head
  $ hg merge
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ cat b
  a
  a
  a
  <<<<<<< working copy: 5fbdc1152d97 - test: b2.1
  b4
  c
  b5
  ||||||| base
  =======
  b4
  b5
  b6
  >>>>>>> merge rev:    37ec9f5c3d1f - test: b2
  $ cat <<EOF > b
  > a
  > a
  > a
  > b4
  > c
  > b5
  > EOF
  $ hg resolve --mark -q
  $ rm b.orig
  $ hg ci -mmergeb -d '3 0'

annotate after merge
(note: the first one falls back to the vanilla annotate which does not use linelog)

  $ hg annotate -nf b --debug
  fastannotate: b: rebuilding broken cache
  fastannotate: b: 5 new changesets in the main branch
  0 a: a
  1 a: a
  1 a: a
  3 b: b4
  4 b: c
  3 b: b5

(difference explained below)

  $ hg annotate -nf b --debug
  fastannotate: b: using fast path (resolved fctx: False)
  0 a: a
  1 a: a
  1 a: a
  4 b: b4
  4 b: c
  4 b: b5

annotate after merge with -l
(fastannotate differs from annotate)

  $ hg log -Gp -T '{rev}:{node}' -r '2..5'
  @    5:64afcdf8e29e063c635be123d8d2fb160af00f7e
  |\
  | o  4:5fbdc1152d97597717021ad9e063061b200f146bdiff --git a/b b/b
  | |  --- a/b
  | |  +++ b/b
  | |  @@ -1,3 +1,6 @@
  | |   a
  | |   a
  | |   a
  | |  +b4
  | |  +c
  | |  +b5
  | |
  o |  3:37ec9f5c3d1f99572d7075971cb4876e2139b52fdiff --git a/b b/b
  |/   --- a/b
  |    +++ b/b
  |    @@ -1,3 +1,6 @@
  |     a
  |     a
  |     a
  |    +b4
  |    +b5
  |    +b6
  |
  o  2:3086dbafde1ce745abfc8d2d367847280aabae9ddiff --git a/a b/b
  |  copy from a
  ~  copy to b
  

(in this case, "b4", "b5" could be considered introduced by either rev 3, or rev 4.
 and that causes the rev number difference)

  $ hg annotate -nlf b --config fastannotate.modes=
  0 a:1: a
  1 a:2: a
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5

  $ hg annotate -nlf b
  0 a:1: a
  1 a:2: a
  1 a:3: a
  4 b:4: b4
  4 b:5: c
  4 b:6: b5

  $ hg up -C 1
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg cp a b
  $ cat <<EOF > b
  > a
  > z
  > a
  > EOF
  $ hg ci -mc -d '3 0'
  created new head
Work around the pure version not resolving the conflict like native code
#if pure
  $ hg merge
  merging b
  warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
  0 files updated, 0 files merged, 0 files removed, 1 files unresolved
  use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
  [1]
  $ cat <<EOF > b
  > a
  > z
  > a
  > b4
  > c
  > b5
  > EOF
  $ hg resolve -m b
  (no more unresolved files)
  $ rm b.orig
#else
  $ hg merge
  merging b
  0 files updated, 1 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
#endif
  $ echo d >> b
  $ hg ci -mmerge2 -d '4 0'

annotate after rename merge

  $ hg annotate -nf b
  0 a: a
  6 b: z
  1 a: a
  3 b: b4
  4 b: c
  3 b: b5
  7 b: d

annotate after rename merge with -l
(fastannotate differs from annotate)

  $ hg log -Gp -T '{rev}:{node}' -r '0+1+6+7'
  @    7:6284bb6c38fef984a929862a53bbc71ce9eafa81diff --git a/b b/b
  |\   --- a/b
  | :  +++ b/b
  | :  @@ -1,3 +1,7 @@
  | :   a
  | :   z
  | :   a
  | :  +b4
  | :  +c
  | :  +b5
  | :  +d
  | :
  o :  6:b80e3e32f75a6a67cd4ac85496a11511e9112816diff --git a/a b/b
  :/   copy from a
  :    copy to b
  :    --- a/a
  :    +++ b/b
  :    @@ -1,3 +1,3 @@
  :    -a (?)
  :     a
  :    +z
  :     a
  :    -a (?)
  :
  o  1:762f04898e6684ff713415f7b8a8d53d33f96c92diff --git a/a b/a
  |  --- a/a
  |  +++ b/a
  |  @@ -1,1 +1,3 @@
  |   a
  |  +a
  |  +a
  |
  o  0:8435f90966e442695d2ded29fdade2bac5ad8065diff --git a/a b/a
     new file mode 100644
     --- /dev/null
     +++ b/a
     @@ -0,0 +1,1 @@
     +a
  

(note on question marks:
 the upstream bdiff change (96f2f50d923f+3633403888ae+8c0c75aa3ff4+5c4e2636c1a9
 +38ed54888617) alters the output so deletion is not always at the end of the
 output. for example:
 | a | b | old | new | # old: e1d6aa0e4c3a, new: 8836f13e3c5b
 |-------------------|
 | a | a |  a  | -a  |
 | a | z | +z  |  a  |
 | a | a |  a  | +z  |
 |   |   | -a  |  a  |
 |-------------------|
 | a | a |     a     |
 | a | a |     a     |
 | a |   |    -a     |
 this leads to more question marks below)

(rev 1 adds two "a"s and rev 6 deletes one "a".
 the "a" that rev 6 deletes could be either the first or the second "a" of those two "a"s added by rev 1.
 and that causes the line number difference)

  $ hg annotate -nlf b --config fastannotate.modes=
  0 a:1: a
  6 b:2: z
  1 a:3: a
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  7 b:7: d

  $ hg annotate -nlf b
  0 a:1: a (?)
  1 a:2: a (?)
  6 b:2: z
  1 a:2: a (?)
  1 a:3: a (?)
  3 b:4: b4
  4 b:5: c
  3 b:5: b5
  7 b:7: d

Issue2807: alignment of line numbers with -l
(fastannotate differs from annotate, same reason as above)

  $ echo more >> b
  $ hg ci -mmore -d '5 0'
  $ echo more >> b
  $ hg ci -mmore -d '6 0'
  $ echo more >> b
  $ hg ci -mmore -d '7 0'
  $ hg annotate -nlf b
   0 a: 1: a (?)
   1 a: 2: a (?)
   6 b: 2: z
   1 a: 2: a (?)
   1 a: 3: a (?)
   3 b: 4: b4
   4 b: 5: c
   3 b: 5: b5
   7 b: 7: d
   8 b: 8: more
   9 b: 9: more
  10 b:10: more

linkrev vs rev

  $ hg annotate -r tip -n a
  0: a
  1: a
  1: a

linkrev vs rev with -l

  $ hg annotate -r tip -nl a
  0:1: a
  1:2: a
  1:3: a

Issue589: "undelete" sequence leads to crash

annotate was crashing when trying to --follow something

like A -> B -> A

generate ABA rename configuration

  $ echo foo > foo
  $ hg add foo
  $ hg ci -m addfoo
  $ hg rename foo bar
  $ hg ci -m renamefoo
  $ hg rename bar foo
  $ hg ci -m renamebar

annotate after ABA with follow

  $ hg annotate --follow foo
  foo: foo

missing file

  $ hg ann nosuchfile
  abort: nosuchfile: no such file in rev e9e6b4fa872f
  [255]

annotate file without '\n' on last line

  $ printf "" > c
  $ hg ci -A -m test -u nobody -d '1 0'
  adding c
  $ hg annotate c
  $ printf "a\nb" > c
  $ hg ci -m test
  $ hg annotate c
  [0-9]+: a (re)
  [0-9]+: b (re)

Issue3841: check annotation of the file of which filelog includes
merging between the revision and its ancestor

to reproduce the situation with recent Mercurial, this script uses (1)
"hg debugsetparents" to merge without ancestor check by "hg merge",
and (2) the extension to allow filelog merging between the revision
and its ancestor by overriding "repo._filecommit".

  $ cat > ../legacyrepo.py <<EOF
  > from mercurial import error, node
  > def reposetup(ui, repo):
  >     class legacyrepo(repo.__class__):
  >         def _filecommit(self, fctx, manifest1, manifest2,
  >                         linkrev, tr, changelist, includecopymeta):
  >             fname = fctx.path()
  >             text = fctx.data()
  >             flog = self.file(fname)
  >             fparent1 = manifest1.get(fname, node.nullid)
  >             fparent2 = manifest2.get(fname, node.nullid)
  >             meta = {}
  >             copy = fctx.renamed()
  >             if copy and copy[0] != fname:
  >                 raise error.Abort('copying is not supported')
  >             if fparent2 != node.nullid:
  >                 changelist.append(fname)
  >                 return flog.add(text, meta, tr, linkrev,
  >                                 fparent1, fparent2)
  >             raise error.Abort('only merging is supported')
  >     repo.__class__ = legacyrepo
  > EOF

  $ cat > baz <<EOF
  > 1
  > 2
  > 3
  > 4
  > 5
  > EOF
  $ hg add baz
  $ hg commit -m "baz:0"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2
  > 3
  > 4
  > 5
  > EOF
  $ hg commit -m "baz:1"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3
  > 4
  > 5
  > EOF
  $ hg debugsetparents 17 17
  $ hg --config extensions.legacyrepo=../legacyrepo.py  commit -m "baz:2"
  $ hg debugindexdot baz
  digraph G {
  	-1 -> 0
  	0 -> 1
  	1 -> 2
  	1 -> 2
  }
  $ hg annotate baz
  17: 1 baz:1
  18: 2 baz:2
  16: 3
  16: 4
  16: 5

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3 baz:3
  > 4
  > 5
  > EOF
  $ hg commit -m "baz:3"

  $ cat > baz <<EOF
  > 1 baz:1
  > 2 baz:2
  > 3 baz:3
  > 4 baz:4
  > 5
  > EOF
  $ hg debugsetparents 19 18
  $ hg --config extensions.legacyrepo=../legacyrepo.py  commit -m "baz:4"
  $ hg debugindexdot baz
  digraph G {
  	-1 -> 0
  	0 -> 1
  	1 -> 2
  	1 -> 2
  	2 -> 3
  	3 -> 4
  	2 -> 4
  }
  $ hg annotate baz
  17: 1 baz:1
  18: 2 baz:2
  19: 3 baz:3
  20: 4 baz:4
  16: 5

annotate clean file

  $ hg annotate -ncr "wdir()" foo
  11 472b18db256d : foo

annotate modified file

  $ echo foofoo >> foo
  $ hg annotate -r "wdir()" foo
  11 : foo
  20+: foofoo

  $ hg annotate -cr "wdir()" foo
  472b18db256d : foo
  b6bedd5477e7+: foofoo

  $ hg annotate -ncr "wdir()" foo
  11 472b18db256d : foo
  20 b6bedd5477e7+: foofoo

  $ hg annotate --debug -ncr "wdir()" foo
  11 472b18db256d1e8282064eab4bfdaf48cbfe83cd : foo
  20 b6bedd5477e797f25e568a6402d4697f3f895a72+: foofoo

  $ hg annotate -udr "wdir()" foo
  test Thu Jan 01 00:00:00 1970 +0000: foo
  test [A-Za-z0-9:+ ]+: foofoo (re)

  $ hg annotate -ncr "wdir()" -Tjson foo
  [
   {
    "lines": [{"line": "foo\n", "node": "472b18db256d1e8282064eab4bfdaf48cbfe83cd", "rev": 11}, {"line": "foofoo\n", "node": "ffffffffffffffffffffffffffffffffffffffff", "rev": 2147483647}],
    "path": "foo"
   }
  ]

annotate added file

  $ echo bar > bar
  $ hg add bar
  $ hg annotate -ncr "wdir()" bar
  20 b6bedd5477e7+: bar

annotate renamed file

  $ hg rename foo renamefoo2
  $ hg annotate -ncr "wdir()" renamefoo2
  11 472b18db256d : foo
  20 b6bedd5477e7+: foofoo

annotate missing file

  $ rm baz
  $ hg annotate -ncr "wdir()" baz
  abort: $TESTTMP/repo/baz: $ENOENT$ (windows !)
  abort: $ENOENT$: '$TESTTMP/repo/baz' (no-windows !)
  [255]

annotate removed file

  $ hg rm baz
  $ hg annotate -ncr "wdir()" baz
  abort: $TESTTMP/repo/baz: $ENOENT$ (windows !)
  abort: $ENOENT$: '$TESTTMP/repo/baz' (no-windows !)
  [255]

Test annotate with whitespace options

  $ cd ..
  $ hg init repo-ws
  $ cd repo-ws
  $ cat > a <<EOF
  > aa
  > 
  > b b
  > EOF
  $ hg ci -Am "adda"
  adding a
  $ sed 's/EOL$//g' > a <<EOF
  > a  a
  > 
  >  EOL
  > b  b
  > EOF
  $ hg ci -m "changea"

Annotate with no option

  $ hg annotate a
  1: a  a
  0: 
  1:  
  1: b  b

Annotate with --ignore-space-change

  $ hg annotate --ignore-space-change a
  1: a  a
  1: 
  0:  
  0: b  b

Annotate with --ignore-all-space

  $ hg annotate --ignore-all-space a
  0: a  a
  0: 
  1:  
  0: b  b

Annotate with --ignore-blank-lines (similar to no options case)

  $ hg annotate --ignore-blank-lines a
  1: a  a
  0: 
  1:  
  1: b  b

  $ cd ..

Annotate with linkrev pointing to another branch
------------------------------------------------

create history with a filerev whose linkrev points to another branch

  $ hg init branchedlinkrev
  $ cd branchedlinkrev
  $ echo A > a
  $ hg commit -Am 'contentA'
  adding a
  $ echo B >> a
  $ hg commit -m 'contentB'
  $ hg up --rev 'desc(contentA)'
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo unrelated > unrelated
  $ hg commit -Am 'unrelated'
  adding unrelated
  created new head
  $ hg graft -r 'desc(contentB)'
  grafting 1:fd27c222e3e6 "contentB"
  $ echo C >> a
  $ hg commit -m 'contentC'
  $ echo W >> a
  $ hg log -G
  @  changeset:   4:072f1e8df249
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     contentC
  |
  o  changeset:   3:ff38df03cc4b
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     contentB
  |
  o  changeset:   2:62aaf3f6fc06
  |  parent:      0:f0932f74827e
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     unrelated
  |
  | o  changeset:   1:fd27c222e3e6
  |/   user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     contentB
  |
  o  changeset:   0:f0932f74827e
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     contentA
  

Annotate should list ancestor of starting revision only

  $ hg annotate a
  0: A
  3: B
  4: C

  $ hg annotate a -r 'wdir()'
  0 : A
  3 : B
  4 : C
  4+: W

Even when the starting revision is the linkrev-shadowed one:

  $ hg annotate a -r 3
  0: A
  3: B

  $ cd ..

Issue5360: Deleted chunk in p1 of a merge changeset

  $ hg init repo-5360
  $ cd repo-5360
  $ echo 1 > a
  $ hg commit -A a -m 1
  $ echo 2 >> a
  $ hg commit -m 2
  $ echo a > a
  $ hg commit -m a
  $ hg update '.^' -q
  $ echo 3 >> a
  $ hg commit -m 3 -q
  $ hg merge 2 -q
  warning: conflicts while merging a! (edit, then use 'hg resolve --mark')
  [1]
  $ cat a
  <<<<<<< working copy: 0a068f0261cf - test: 3
  1
  2
  3
  ||||||| base
  1
  2
  =======
  a
  >>>>>>> merge rev:    9409851bc20a - test: a
  $ cat > a << EOF
  > b
  > 1
  > 2
  > 3
  > a
  > EOF
  $ hg resolve --mark -q
  $ rm a.orig
  $ hg commit -m m
  $ hg annotate a
  4: b
  0: 1
  1: 2
  3: 3
  2: a

  $ cd ..