tests: demonstrate crash caused by pinning of non-existent mergestate node
If the mergestate somehow contains a reference to a non-existent node,
it causes most commands to crash since
aaeccdb6e654 (repoview: pin
revisions for `local` and `other` when a merge is active,
2020-09-04). This patch adds a test showing that.
Differential Revision: https://phab.mercurial-scm.org/D9077
Test for the heuristic copytracing algorithm
============================================
$ cat >> $TESTTMP/copytrace.sh << '__EOF__'
> initclient() {
> cat >> $1/.hg/hgrc <<EOF
> [experimental]
> copytrace = heuristics
> copytrace.sourcecommitlimit = -1
> EOF
> }
> __EOF__
$ . "$TESTTMP/copytrace.sh"
$ cat >> $HGRCPATH << EOF
> [extensions]
> rebase=
> [alias]
> l = log -G -T 'rev: {rev}\ndesc: {desc}\n'
> pl = log -G -T 'rev: {rev}, phase: {phase}\ndesc: {desc}\n'
> EOF
NOTE: calling initclient() set copytrace.sourcecommitlimit=-1 as we want to
prevent the full copytrace algorithm to run and test the heuristic algorithm
without complexing the test cases with public and draft commits.
Check filename heuristics (same dirname and same basename)
----------------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ mkdir dir
$ echo a > dir/file.txt
$ hg addremove
adding a
adding dir/file.txt
$ hg ci -m initial
$ hg mv a b
$ hg mv -q dir dir2
$ hg ci -m 'mv a b, mv dir/ dir2/'
$ hg up -q 0
$ echo b > a
$ echo b > dir/file.txt
$ hg ci -qm 'mod a, mod dir/file.txt'
$ hg l
@ rev: 2
| desc: mod a, mod dir/file.txt
| o rev: 1
|/ desc: mv a b, mv dir/ dir2/
o rev: 0
desc: initial
$ hg rebase -s . -d 1
rebasing 2:557f403c0afd "mod a, mod dir/file.txt" (tip)
merging b and a to b
merging dir2/file.txt and dir/file.txt to dir2/file.txt
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/557f403c0afd-9926eeff-rebase.hg
$ cd ..
$ rm -rf repo
Make sure filename heuristics do not when they are not related
--------------------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo 'somecontent' > a
$ hg add a
$ hg ci -m initial
$ hg rm a
$ echo 'completelydifferentcontext' > b
$ hg add b
$ hg ci -m 'rm a, add b'
$ hg up -q 0
$ printf 'somecontent\nmoarcontent' > a
$ hg ci -qm 'mode a'
$ hg l
@ rev: 2
| desc: mode a
| o rev: 1
|/ desc: rm a, add b
o rev: 0
desc: initial
$ hg rebase -s . -d 1
rebasing 2:d526312210b9 "mode a" (tip)
file 'a' was deleted in local [dest] but was modified in other [source].
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
[1]
$ cd ..
$ rm -rf repo
Test when lca didn't modified the file that was moved
-----------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo 'somecontent' > a
$ hg add a
$ hg ci -m initial
$ echo c > c
$ hg add c
$ hg ci -m randomcommit
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg up -q 1
$ echo b > a
$ hg ci -qm 'mod a'
$ hg pl
@ rev: 3, phase: draft
| desc: mod a
| o rev: 2, phase: draft
|/ desc: mv a b
o rev: 1, phase: draft
| desc: randomcommit
o rev: 0, phase: draft
desc: initial
$ hg rebase -s . -d 2
rebasing 3:9d5cf99c3d9f "mod a" (tip)
merging b and a to b
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/9d5cf99c3d9f-f02358cc-rebase.hg
$ cd ..
$ rm -rf repo
Rebase "backwards"
------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo 'somecontent' > a
$ hg add a
$ hg ci -m initial
$ echo c > c
$ hg add c
$ hg ci -m randomcommit
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg up -q 2
$ echo b > b
$ hg ci -qm 'mod b'
$ hg l
@ rev: 3
| desc: mod b
o rev: 2
| desc: mv a b
o rev: 1
| desc: randomcommit
o rev: 0
desc: initial
$ hg rebase -s . -d 0
rebasing 3:fbe97126b396 "mod b" (tip)
merging a and b to a
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/fbe97126b396-cf5452a1-rebase.hg
$ cd ..
$ rm -rf repo
Check a few potential move candidates
-------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ mkdir dir
$ echo a > dir/a
$ hg add dir/a
$ hg ci -qm initial
$ hg mv dir/a dir/b
$ hg ci -qm 'mv dir/a dir/b'
$ mkdir dir2
$ echo b > dir2/a
$ hg add dir2/a
$ hg ci -qm 'create dir2/a'
$ hg up -q 0
$ echo b > dir/a
$ hg ci -qm 'mod dir/a'
$ hg l
@ rev: 3
| desc: mod dir/a
| o rev: 2
| | desc: create dir2/a
| o rev: 1
|/ desc: mv dir/a dir/b
o rev: 0
desc: initial
$ hg rebase -s . -d 2
rebasing 3:6b2f4cece40f "mod dir/a" (tip)
merging dir/b and dir/a to dir/b
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/6b2f4cece40f-503efe60-rebase.hg
$ cd ..
$ rm -rf repo
Test the copytrace.movecandidateslimit with many move candidates
----------------------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg mv a foo
$ echo a > b
$ echo a > c
$ echo a > d
$ echo a > e
$ echo a > f
$ echo a > g
$ hg add b
$ hg add c
$ hg add d
$ hg add e
$ hg add f
$ hg add g
$ hg ci -m 'mv a foo, add many files'
$ hg up -q ".^"
$ echo b > a
$ hg ci -m 'mod a'
created new head
$ hg l
@ rev: 2
| desc: mod a
| o rev: 1
|/ desc: mv a foo, add many files
o rev: 0
desc: initial
With small limit
$ hg rebase -s 2 -d 1 --config experimental.copytrace.movecandidateslimit=0
rebasing 2:ef716627c70b "mod a" (tip)
skipping copytracing for 'a', more candidates than the limit: 7
file 'a' was deleted in local [dest] but was modified in other [source].
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
[1]
$ hg rebase --abort
rebase aborted
With default limit which is 100
$ hg rebase -s 2 -d 1
rebasing 2:ef716627c70b "mod a" (tip)
merging foo and a to foo
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg
$ cd ..
$ rm -rf repo
Move file in one branch and delete it in another
-----------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg up -q ".^"
$ hg rm a
$ hg ci -m 'del a'
created new head
$ hg pl
@ rev: 2, phase: draft
| desc: del a
| o rev: 1, phase: draft
|/ desc: mv a b
o rev: 0, phase: draft
desc: initial
$ hg rebase -s 1 -d 2
rebasing 1:472e38d57782 "mv a b"
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/472e38d57782-17d50e29-rebase.hg
$ hg up -q c492ed3c7e35dcd1dc938053b8adf56e2cfbd062
$ ls -A
.hg
b
$ cd ..
$ rm -rf repo
Move a directory in draft branch
--------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ mkdir dir
$ echo a > dir/a
$ hg add dir/a
$ hg ci -qm initial
$ echo b > dir/a
$ hg ci -qm 'mod dir/a'
$ hg up -q ".^"
$ hg mv -q dir/ dir2
$ hg ci -qm 'mv dir/ dir2/'
$ hg l
@ rev: 2
| desc: mv dir/ dir2/
| o rev: 1
|/ desc: mod dir/a
o rev: 0
desc: initial
$ hg rebase -s . -d 1
rebasing 2:a33d80b6e352 "mv dir/ dir2/" (tip)
merging dir/a and dir2/a to dir2/a
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/a33d80b6e352-fecb9ada-rebase.hg
$ cd ..
$ rm -rf server
$ rm -rf repo
Move file twice and rebase mod on top of moves
----------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg mv b c
$ hg ci -m 'mv b c'
$ hg up -q 0
$ echo c > a
$ hg ci -m 'mod a'
created new head
$ hg l
@ rev: 3
| desc: mod a
| o rev: 2
| | desc: mv b c
| o rev: 1
|/ desc: mv a b
o rev: 0
desc: initial
$ hg rebase -s . -d 2
rebasing 3:d41316942216 "mod a" (tip)
merging c and a to c
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/d41316942216-2b5949bc-rebase.hg
$ cd ..
$ rm -rf repo
Move file twice and rebase moves on top of mods
-----------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg mv b c
$ hg ci -m 'mv b c'
$ hg up -q 0
$ echo c > a
$ hg ci -m 'mod a'
created new head
$ hg l
@ rev: 3
| desc: mod a
| o rev: 2
| | desc: mv b c
| o rev: 1
|/ desc: mv a b
o rev: 0
desc: initial
$ hg rebase -s 1 -d .
rebasing 1:472e38d57782 "mv a b"
merging a and b to b
rebasing 2:d3efd280421d "mv b c"
merging b and c to c
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/472e38d57782-ab8d3c58-rebase.hg
$ cd ..
$ rm -rf repo
Move one file and add another file in the same folder in one branch, modify file in another branch
--------------------------------------------------------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg mv a b
$ hg ci -m 'mv a b'
$ echo c > c
$ hg add c
$ hg ci -m 'add c'
$ hg up -q 0
$ echo b > a
$ hg ci -m 'mod a'
created new head
$ hg l
@ rev: 3
| desc: mod a
| o rev: 2
| | desc: add c
| o rev: 1
|/ desc: mv a b
o rev: 0
desc: initial
$ hg rebase -s . -d 2
rebasing 3:ef716627c70b "mod a" (tip)
merging b and a to b
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg
$ ls -A
.hg
b
c
$ cat b
b
$ rm -rf repo
Merge test
----------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ echo b > a
$ hg ci -m 'modify a'
$ hg up -q 0
$ hg mv a b
$ hg ci -m 'mv a b'
created new head
$ hg up -q 2
$ hg l
@ rev: 2
| desc: mv a b
| o rev: 1
|/ desc: modify a
o rev: 0
desc: initial
$ hg merge 1
merging b and a to b
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -m merge
$ ls -A
.hg
b
$ cd ..
$ rm -rf repo
Copy and move file
------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg cp a c
$ hg mv a b
$ hg ci -m 'cp a c, mv a b'
$ hg up -q 0
$ echo b > a
$ hg ci -m 'mod a'
created new head
$ hg l
@ rev: 2
| desc: mod a
| o rev: 1
|/ desc: cp a c, mv a b
o rev: 0
desc: initial
$ hg rebase -s . -d 1
rebasing 2:ef716627c70b "mod a" (tip)
merging b and a to b
merging c and a to c
saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/ef716627c70b-24681561-rebase.hg
$ ls -A
.hg
b
c
$ cat b
b
$ cat c
b
$ cd ..
$ rm -rf repo
Do a merge commit with many consequent moves in one branch
----------------------------------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ echo b > a
$ hg ci -qm 'mod a'
$ hg up -q ".^"
$ hg mv a b
$ hg ci -qm 'mv a b'
$ hg mv b c
$ hg ci -qm 'mv b c'
$ hg up -q 1
$ hg l
o rev: 3
| desc: mv b c
o rev: 2
| desc: mv a b
| @ rev: 1
|/ desc: mod a
o rev: 0
desc: initial
$ hg merge 3
merging a and c to c
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -qm 'merge'
$ hg pl
@ rev: 4, phase: draft
|\ desc: merge
| o rev: 3, phase: draft
| | desc: mv b c
| o rev: 2, phase: draft
| | desc: mv a b
o | rev: 1, phase: draft
|/ desc: mod a
o rev: 0, phase: draft
desc: initial
$ ls -A
.hg
c
$ cd ..
$ rm -rf repo
Test shelve/unshelve
-------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg add a
$ hg ci -m initial
$ echo b > a
$ hg shelve
shelved as default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg mv a b
$ hg ci -m 'mv a b'
$ hg l
@ rev: 1
| desc: mv a b
o rev: 0
desc: initial
$ hg unshelve
unshelving change 'default'
rebasing shelved changes
merging b and a to b
$ ls -A
.hg
b
$ cat b
b
$ cd ..
$ rm -rf repo
Test full copytrace ability on draft branch
-------------------------------------------
File directory and base name changed in same move
$ hg init repo
$ initclient repo
$ mkdir repo/dir1
$ cd repo/dir1
$ echo a > a
$ hg add a
$ hg ci -qm initial
$ cd ..
$ hg mv -q dir1 dir2
$ hg mv dir2/a dir2/b
$ hg ci -qm 'mv a b; mv dir1 dir2'
$ hg up -q '.^'
$ cd dir1
$ echo b >> a
$ cd ..
$ hg ci -qm 'mod a'
$ hg pl
@ rev: 2, phase: draft
| desc: mod a
| o rev: 1, phase: draft
|/ desc: mv a b; mv dir1 dir2
o rev: 0, phase: draft
desc: initial
$ hg rebase -s . -d 1 --config experimental.copytrace.sourcecommitlimit=100
rebasing 2:6207d2d318e7 "mod a" (tip)
merging dir2/b and dir1/a to dir2/b
saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/6207d2d318e7-1c9779ad-rebase.hg
$ cat dir2/b
a
b
$ cd ..
$ rm -rf repo
Move directory in one merge parent, while adding file to original directory
in other merge parent. File moved on rebase.
$ hg init repo
$ initclient repo
$ mkdir repo/dir1
$ cd repo/dir1
$ echo dummy > dummy
$ hg add dummy
$ cd ..
$ hg ci -qm initial
$ cd dir1
$ echo a > a
$ hg add a
$ cd ..
$ hg ci -qm 'hg add dir1/a'
$ hg up -q '.^'
$ hg mv -q dir1 dir2
$ hg ci -qm 'mv dir1 dir2'
$ hg pl
@ rev: 2, phase: draft
| desc: mv dir1 dir2
| o rev: 1, phase: draft
|/ desc: hg add dir1/a
o rev: 0, phase: draft
desc: initial
$ hg rebase -s . -d 1 --config experimental.copytrace.sourcecommitlimit=100
rebasing 2:e8919e7df8d0 "mv dir1 dir2" (tip)
saved backup bundle to $TESTTMP/repo/repo/.hg/strip-backup/e8919e7df8d0-f62fab62-rebase.hg
$ ls dir2
a
dummy
$ rm -rf repo
Testing the sourcecommitlimit config
-----------------------------------
$ hg init repo
$ initclient repo
$ cd repo
$ echo a > a
$ hg ci -Aqm "added a"
$ echo "more things" >> a
$ hg ci -qm "added more things to a"
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo b > b
$ hg ci -Aqm "added b"
$ mkdir foo
$ hg mv a foo/bar
$ hg ci -m "Moved a to foo/bar"
$ hg pl
@ rev: 3, phase: draft
| desc: Moved a to foo/bar
o rev: 2, phase: draft
| desc: added b
| o rev: 1, phase: draft
|/ desc: added more things to a
o rev: 0, phase: draft
desc: added a
When the sourcecommitlimit is small and we have more drafts, we use heuristics only
$ hg rebase -s 1 -d .
rebasing 1:8b6e13696c38 "added more things to a"
file 'a' was deleted in local [dest] but was modified in other [source].
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
unresolved conflicts (see 'hg resolve', then 'hg rebase --continue')
[1]
But when we have "sourcecommitlimit > (no. of drafts from base to c1)", we do
fullcopytracing
$ hg rebase --abort
rebase aborted
$ hg rebase -s 1 -d . --config experimental.copytrace.sourcecommitlimit=100
rebasing 1:8b6e13696c38 "added more things to a"
merging foo/bar and a to foo/bar
saved backup bundle to $TESTTMP/repo/repo/repo/.hg/strip-backup/8b6e13696c38-fc14ac83-rebase.hg
$ cd ..
$ rm -rf repo