tests/test-backout.t
| author |
Pierre-Yves David <pierre-yves.david@octobus.net> |
|
Mon, 14 Dec 2020 11:32:24 +0100 |
| changeset 46149 |
294d5aca4ff5 |
| parent 45846 |
8d72e29ad1e0
|
| child 46811 |
5a0b930cfb3e |
| permissions |
-rw-r--r-- |
copies: iterate over children directly (instead of parents)
Before this change we would gather all parent → child edges and iterate on
all parent, gathering copy information for children and aggregating them from
there.
They are not strict requirement for edges to be processed in that specific
order. We could also simply iterate over all "children" revision and aggregate
data from both parents at the same time. This patch does that.
It make various things simpler:
* since both parents are processed at the same time, we no longer need to
cache data for merge (see next changeset for details),
* we no longer need nested loop to process data,
* we no longer need to store partial merge data for a rev from distinct loop
interaction to another when processing merges,
* we no longer need to build a full parent -> children mapping (we only rely on
a simpler "parent -> number of children" map (for memory efficiency),
* the data access pattern is now simpler (from lower revisions to higher
revisions) and entirely predicable. That predictability open the way to
prefetching and parallel processing.
So that new iterations order requires simpler code and open the way to
interesting optimisation.
The effect on performance is quite good. In the worse case, we don't see any
significant negative impact. And in the best case, the reduction of roundtrip
to Python provide us with a significant speed. Some example below:
Repo Case Source-Rev Dest-Rev # of revisions old time new time Difference Factor time per rev
---------------------------------------------------------------------------------------------------------------------------------------------------------------
mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 34414 revs, 0.962867 s, 0.502584 s, -0.460283 s, × 0.5220, 14 µs/rev
mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 8598 revs, 0.110717 s, 0.076323 s, -0.034394 s, × 0.6894, 8 µs/rev
# full comparison between the previous changeset and this one
Repo Case Source-Rev Dest-Rev # of revisions old time new time Difference Factor time per rev
---------------------------------------------------------------------------------------------------------------------------------------------------------------
mercurial x_revs_x_added_0_copies ad6b123de1c7 39cfcef4f463 : 1 revs, 0.000048 s, 0.000041 s, -0.000007 s, × 0.8542, 41 µs/rev
mercurial x_revs_x_added_x_copies 2b1c78674230 0c1d10351869 : 6 revs, 0.000153 s, 0.000102 s, -0.000051 s, × 0.6667, 17 µs/rev
mercurial x000_revs_x000_added_x_copies 81f8ff2a9bf2 dd3267698d84 : 1032 revs, 0.004209 s, 0.004254 s, +0.000045 s, × 1.0107, 4 µs/rev
pypy x_revs_x_added_0_copies aed021ee8ae8 099ed31b181b : 9 revs, 0.000203 s, 0.000282 s, +0.000079 s, × 1.3892, 31 µs/rev
pypy x_revs_x000_added_0_copies 4aa4e1f8e19a 359343b9ac0e : 1 revs, 0.000059 s, 0.000048 s, -0.000011 s, × 0.8136, 48 µs/rev
pypy x_revs_x_added_x_copies ac52eb7bbbb0 72e022663155 : 7 revs, 0.000194 s, 0.000211 s, +0.000017 s, × 1.0876, 30 µs/rev
pypy x_revs_x00_added_x_copies c3b14617fbd7 ace7255d9a26 : 1 revs, 0.000380 s, 0.000375 s, -0.000005 s, × 0.9868, 375 µs/rev
pypy x_revs_x000_added_x000_copies df6f7a526b60 a83dc6a2d56f : 6 revs, 0.010588 s, 0.010574 s, -0.000014 s, × 0.9987, 1762 µs/rev
pypy x000_revs_xx00_added_0_copies 89a76aede314 2f22446ff07e : 4785 revs, 0.048961 s, 0.049974 s, +0.001013 s, × 1.0207, 10 µs/rev
pypy x000_revs_x000_added_x_copies 8a3b5bfd266e 2c68e87c3efe : 6780 revs, 0.083612 s, 0.084300 s, +0.000688 s, × 1.0082, 12 µs/rev
pypy x000_revs_x000_added_x000_copies 89a76aede314 7b3dda341c84 : 5441 revs, 0.058579 s, 0.060128 s, +0.001549 s, × 1.0264, 11 µs/rev
pypy x0000_revs_x_added_0_copies d1defd0dc478 c9cb1334cc78 : 43645 revs, 0.736783 s, 0.686542 s, -0.050241 s, × 0.9318, 15 µs/rev
pypy x0000_revs_xx000_added_0_copies bf2c629d0071 4ffed77c095c : 2 revs, 0.022050 s, 0.009277 s, -0.012773 s, × 0.4207, 4638 µs/rev
pypy x0000_revs_xx000_added_x000_copies 08ea3258278e d9fa043f30c0 : 11316 revs, 0.120800 s, 0.114733 s, -0.006067 s, × 0.9498, 10 µs/rev
netbeans x_revs_x_added_0_copies fb0955ffcbcd a01e9239f9e7 : 2 revs, 0.000140 s, 0.000081 s, -0.000059 s, × 0.5786, 40 µs/rev
netbeans x_revs_x000_added_0_copies 6f360122949f 20eb231cc7d0 : 2 revs, 0.000114 s, 0.000107 s, -0.000007 s, × 0.9386, 53 µs/rev
netbeans x_revs_x_added_x_copies 1ada3faf6fb6 5a39d12eecf4 : 3 revs, 0.000224 s, 0.000173 s, -0.000051 s, × 0.7723, 57 µs/rev
netbeans x_revs_x00_added_x_copies 35be93ba1e2c 9eec5e90c05f : 9 revs, 0.000723 s, 0.000698 s, -0.000025 s, × 0.9654, 77 µs/rev
netbeans x000_revs_xx00_added_0_copies eac3045b4fdd 51d4ae7f1290 : 1421 revs, 0.009665 s, 0.009248 s, -0.000417 s, × 0.9569, 6 µs/rev
netbeans x000_revs_x000_added_x_copies e2063d266acd 6081d72689dc : 1533 revs, 0.014820 s, 0.015446 s, +0.000626 s, × 1.0422, 10 µs/rev
netbeans x000_revs_x000_added_x000_copies ff453e9fee32 411350406ec2 : 5750 revs, 0.076049 s, 0.074373 s, -0.001676 s, × 0.9780, 12 µs/rev
netbeans x0000_revs_xx000_added_x000_copies 588c2d1ced70 1aad62e59ddd : 66949 revs, 0.683603 s, 0.639870 s, -0.043733 s, × 0.9360, 9 µs/rev
mozilla-central x_revs_x_added_0_copies 3697f962bb7b 7015fcdd43a2 : 2 revs, 0.000161 s, 0.000088 s, -0.000073 s, × 0.5466, 44 µs/rev
mozilla-central x_revs_x000_added_0_copies dd390860c6c9 40d0c5bed75d : 8 revs, 0.000234 s, 0.000199 s, -0.000035 s, × 0.8504, 24 µs/rev
mozilla-central x_revs_x_added_x_copies 8d198483ae3b 14207ffc2b2f : 9 revs, 0.000247 s, 0.000171 s, -0.000076 s, × 0.6923, 19 µs/rev
mozilla-central x_revs_x00_added_x_copies 98cbc58cc6bc 446a150332c3 : 7 revs, 0.000630 s, 0.000592 s, -0.000038 s, × 0.9397, 84 µs/rev
mozilla-central x_revs_x000_added_x000_copies 3c684b4b8f68 0a5e72d1b479 : 3 revs, 0.003286 s, 0.003151 s, -0.000135 s, × 0.9589, 1050 µs/rev
mozilla-central x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 6 revs, 0.062441 s, 0.061612 s, -0.000829 s, × 0.9867, 10268 µs/rev
mozilla-central x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 1593 revs, 0.005423 s, 0.005381 s, -0.000042 s, × 0.9923, 3 µs/rev
mozilla-central x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 41 revs, 0.005919 s, 0.003742 s, -0.002177 s, × 0.6322, 91 µs/rev
mozilla-central x000_revs_x000_added_x000_copies 7c97034feb78 4407bd0c6330 : 7839 revs, 0.062597 s, 0.061983 s, -0.000614 s, × 0.9902, 7 µs/rev
mozilla-central x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 615 revs, 0.043551 s, 0.019861 s, -0.023690 s, × 0.4560, 32 µs/rev
mozilla-central x0000_revs_xx000_added_x000_copies f78c615a656c 96a38b690156 : 30263 revs, 0.192475 s, 0.188101 s, -0.004374 s, × 0.9773, 6 µs/rev
mozilla-central x00000_revs_x0000_added_x0000_copies 6832ae71433c 4c222a1d9a00 : 153721 revs, 1.955575 s, 1.806696 s, -0.148879 s, × 0.9239, 11 µs/rev
mozilla-central x00000_revs_x00000_added_x000_copies 76caed42cf7c 1daa622bbe42 : 204976 revs, 2.886501 s, 2.682987 s, -0.203514 s, × 0.9295, 13 µs/rev
mozilla-try x_revs_x_added_0_copies aaf6dde0deb8 9790f499805a : 2 revs, 0.001181 s, 0.000852 s, -0.000329 s, × 0.7214, 426 µs/rev
mozilla-try x_revs_x000_added_0_copies d8d0222927b4 5bb8ce8c7450 : 2 revs, 0.001189 s, 0.000859 s, -0.000330 s, × 0.7225, 429 µs/rev
mozilla-try x_revs_x_added_x_copies 092fcca11bdb 936255a0384a : 4 revs, 0.000563 s, 0.000150 s, -0.000413 s, × 0.2664, 37 µs/rev
mozilla-try x_revs_x00_added_x_copies b53d2fadbdb5 017afae788ec : 2 revs, 0.001548 s, 0.001158 s, -0.000390 s, × 0.7481, 579 µs/rev
mozilla-try x_revs_x000_added_x000_copies 20408ad61ce5 6f0ee96e21ad : 1 revs, 0.027782 s, 0.027240 s, -0.000542 s, × 0.9805, 27240 µs/rev
mozilla-try x_revs_x0000_added_x0000_copies effb563bb7e5 c07a39dc4e80 : 6 revs, 0.062781 s, 0.062824 s, +0.000043 s, × 1.0007, 10470 µs/rev
mozilla-try x000_revs_xx00_added_0_copies 6100d773079a 04a55431795e : 1593 revs, 0.005778 s, 0.005463 s, -0.000315 s, × 0.9455, 3 µs/rev
mozilla-try x000_revs_x000_added_x_copies 9f17a6fc04f9 2d37b966abed : 41 revs, 0.006192 s, 0.004238 s, -0.001954 s, × 0.6844, 103 µs/rev
mozilla-try x000_revs_x000_added_x000_copies 1346fd0130e4 4c65cbdabc1f : 6657 revs, 0.065391 s, 0.064113 s, -0.001278 s, × 0.9805, 9 µs/rev
mozilla-try x0000_revs_x_added_0_copies 63519bfd42ee a36a2a865d92 : 40314 revs, 0.317216 s, 0.294063 s, -0.023153 s, × 0.9270, 7 µs/rev
mozilla-try x0000_revs_x_added_x_copies 9fe69ff0762d bcabf2a78927 : 38690 revs, 0.303119 s, 0.281493 s, -0.021626 s, × 0.9287, 7 µs/rev
mozilla-try x0000_revs_xx000_added_x_copies 156f6e2674f2 4d0f2c178e66 : 8598 revs, 0.110717 s, 0.076323 s, -0.034394 s, × 0.6894, 8 µs/rev
mozilla-try x0000_revs_xx000_added_0_copies 9eec5917337d 67118cc6dcad : 615 revs, 0.045739 s, 0.020390 s, -0.025349 s, × 0.4458, 33 µs/rev
mozilla-try x0000_revs_xx000_added_x000_copies 89294cd501d9 7ccb2fc7ccb5 : 97052 revs, 3.098021 s, 3.023879 s, -0.074142 s, × 0.9761, 31 µs/rev
mozilla-try x0000_revs_x0000_added_x0000_copies e928c65095ed e951f4ad123a : 52031 revs, 0.771480 s, 0.735549 s, -0.035931 s, × 0.9534, 14 µs/rev
mozilla-try x00000_revs_x_added_0_copies 6a320851d377 1ebb79acd503 : 363753 revs, 18.813422 s, 18.568900 s, -0.244522 s, × 0.9870, 51 µs/rev
mozilla-try x00000_revs_x00000_added_0_copies dc8a3ca7010e d16fde900c9c : 34414 revs, 0.962867 s, 0.502584 s, -0.460283 s, × 0.5220, 14 µs/rev
mozilla-try x00000_revs_x_added_x_copies 5173c4b6f97c 95d83ee7242d : 362229 revs, 18.684923 s, 18.356645 s, -0.328278 s, × 0.9824, 50 µs/rev
mozilla-try x00000_revs_x000_added_x_copies 9126823d0e9c ca82787bb23c : 359344 revs, 18.296305 s, 18.250393 s, -0.045912 s, × 0.9975, 50 µs/rev
mozilla-try x00000_revs_x0000_added_x0000_copies 8d3fafa80d4b eb884023b810 : 192665 revs, 3.061887 s, 2.792459 s, -0.269428 s, × 0.9120, 14 µs/rev
mozilla-try x00000_revs_x00000_added_x0000_copies 1b661134e2ca 1ae03d022d6d : 228985 revs, 103.869641 s, 107.697264 s, +3.827623 s, × 1.0369, 470 µs/rev
mozilla-try x00000_revs_x00000_added_x000_copies 9b2a99adc05e 8e29777b48e6 : 382065 revs, 64.262957 s, 63.961040 s, -0.301917 s, × 0.9953, 167 µs/rev
Differential Revision: https://phab.mercurial-scm.org/D9422
$ hg init basic
$ cd basic
should complain
$ hg backout
abort: please specify a revision to backout
[10]
$ hg backout -r 0 0
abort: please specify just one revision
[10]
basic operation
(this also tests that editor is invoked if the commit message is not
specified explicitly)
$ echo a > a
$ hg commit -d '0 0' -A -m a
adding a
$ echo b >> a
$ hg commit -d '1 0' -m b
$ hg status --rev tip --rev "tip^1"
M a
$ HGEDITOR=cat hg backout -d '2 0' tip --tool=true
reverting a
Backed out changeset a820f4f40a57
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'default'
HG: changed a
changeset 2:2929462c3dff backs out changeset 1:a820f4f40a57
$ cat a
a
$ hg summary
parent: 2:2929462c3dff tip
Backed out changeset a820f4f40a57
branch: default
commit: (clean)
update: (current)
phases: 3 draft
commit option
$ cd ..
$ hg init commit
$ cd commit
$ echo tomatoes > a
$ hg add a
$ hg commit -d '0 0' -m tomatoes
$ echo chair > b
$ hg add b
$ hg commit -d '1 0' -m chair
$ echo grapes >> a
$ hg commit -d '2 0' -m grapes
$ hg backout -d '4 0' 1 --tool=:fail
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
changeset 3:1c2161e97c0a backs out changeset 1:22cb4f70d813
$ hg summary
parent: 3:1c2161e97c0a tip
Backed out changeset 22cb4f70d813
branch: default
commit: (clean)
update: (current)
phases: 4 draft
$ echo ypples > a
$ hg commit -d '5 0' -m ypples
$ hg backout -d '6 0' 2 --tool=:fail
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges
[1]
$ hg summary
parent: 4:ed99997b793d tip
ypples
branch: default
commit: 1 unresolved (clean)
update: (current)
phases: 5 draft
$ hg log -G
@ changeset: 4:ed99997b793d
| tag: tip
| user: test
| date: Thu Jan 01 00:00:05 1970 +0000
| summary: ypples
|
o changeset: 3:1c2161e97c0a
| user: test
| date: Thu Jan 01 00:00:04 1970 +0000
| summary: Backed out changeset 22cb4f70d813
|
o changeset: 2:a8c6e511cfee
| user: test
| date: Thu Jan 01 00:00:02 1970 +0000
| summary: grapes
|
% changeset: 1:22cb4f70d813
| user: test
| date: Thu Jan 01 00:00:01 1970 +0000
| summary: chair
|
o changeset: 0:a5cb2dde5805
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: tomatoes
file that was removed is recreated
(this also tests that editor is not invoked if the commit message is
specified explicitly)
$ cd ..
$ hg init remove
$ cd remove
$ echo content > a
$ hg commit -d '0 0' -A -m a
adding a
$ hg rm a
$ hg commit -d '1 0' -m b
$ HGEDITOR=cat hg backout -d '2 0' tip --tool=true -m "Backed out changeset 76862dcce372"
adding a
changeset 2:de31bdc76c0d backs out changeset 1:76862dcce372
$ cat a
content
$ hg summary
parent: 2:de31bdc76c0d tip
Backed out changeset 76862dcce372
branch: default
commit: (clean)
update: (current)
phases: 3 draft
backout of backout is as if nothing happened
$ hg backout -d '3 0' --merge tip --tool=true
removing a
changeset 3:7f6d0f120113 backs out changeset 2:de31bdc76c0d
$ test -f a
[1]
$ hg summary
parent: 3:7f6d0f120113 tip
Backed out changeset de31bdc76c0d
branch: default
commit: (clean)
update: (current)
phases: 4 draft
Test that 'hg rollback' restores dirstate just before opening
transaction: in-memory dirstate changes should be written into
'.hg/journal.dirstate' as expected.
$ echo 'removed soon' > b
$ hg commit -A -d '4 0' -m 'prepare for subsequent removing'
adding b
$ echo 'newly added' > c
$ hg add c
$ hg remove b
$ hg commit -d '5 0' -m 'prepare for subsequent backout'
$ touch -t 200001010000 c
$ hg status -A
C c
$ hg debugstate --no-dates
n 644 12 set c
$ hg backout -d '6 0' -m 'to be rollback-ed soon' -r .
removing c
adding b
changeset 6:4bfec048029d backs out changeset 5:fac0b729a654
$ hg rollback -q
$ hg status -A
A b
R c
$ hg debugstate --no-dates
a 0 -1 unset b
r 0 0 set c
across branch
$ cd ..
$ hg init branch
$ cd branch
$ echo a > a
$ hg ci -Am0
adding a
$ echo b > b
$ hg ci -Am1
adding b
$ hg co -C 0
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg summary
parent: 0:f7b1eb17ad24
0
branch: default
commit: (clean)
update: 1 new changesets (update)
phases: 2 draft
should fail
$ hg backout 1
abort: cannot backout change that is not an ancestor
[10]
$ echo c > c
$ hg ci -Am2
adding c
created new head
$ hg summary
parent: 2:db815d6d32e6 tip
2
branch: default
commit: (clean)
update: 1 new changesets, 2 branch heads (merge)
phases: 3 draft
should fail
$ hg backout 1
abort: cannot backout change that is not an ancestor
[10]
$ hg summary
parent: 2:db815d6d32e6 tip
2
branch: default
commit: (clean)
update: 1 new changesets, 2 branch heads (merge)
phases: 3 draft
backout with merge
$ cd ..
$ hg init merge
$ cd merge
$ echo line 1 > a
$ echo line 2 >> a
$ hg commit -d '0 0' -A -m a
adding a
$ hg summary
parent: 0:59395513a13a tip
a
branch: default
commit: (clean)
update: (current)
phases: 1 draft
remove line 1
$ echo line 2 > a
$ hg commit -d '1 0' -m b
$ echo line 3 >> a
$ hg commit -d '2 0' -m c
$ hg backout --merge -d '3 0' 1 --tool=true
reverting a
created new head
changeset 3:26b8ccb9ad91 backs out changeset 1:5a50a024c182
merging with changeset 3:26b8ccb9ad91
merging a
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg commit -d '4 0' -m d
$ hg summary
parent: 4:c7df5e0b9c09 tip
d
branch: default
commit: (clean)
update: (current)
phases: 5 draft
check line 1 is back
$ cat a
line 1
line 2
line 3
Test visibility of in-memory dirstate changes outside transaction to
external hook process
$ cat > $TESTTMP/checkvisibility.sh <<EOF
> echo "==== \$1:"
> hg parents --template "{rev}:{node|short}\n"
> echo "===="
> EOF
"hg backout --merge REV1" at REV2 below implies steps below:
(1) update to REV1 (REV2 => REV1)
(2) revert by REV1^1
(3) commit backing out revision (REV3)
(4) update to REV2 (REV3 => REV2)
(5) merge with REV3 (REV2 => REV2, REV3)
== test visibility to external preupdate hook
$ hg update -q -C 2
$ hg --config extensions.strip= strip 3
saved backup bundle to * (glob)
$ cat >> .hg/hgrc <<EOF
> [hooks]
> preupdate.visibility = sh $TESTTMP/checkvisibility.sh preupdate
> EOF
("-m" is needed to avoid writing dirstate changes out at other than
invocation of the hook to be examined)
$ hg backout --merge -d '3 0' 1 --tool=true -m 'fixed comment'
==== preupdate:
2:6ea3f2a197a2
====
reverting a
created new head
changeset 3:d92a3f57f067 backs out changeset 1:5a50a024c182
==== preupdate:
3:d92a3f57f067
====
merging with changeset 3:d92a3f57f067
==== preupdate:
2:6ea3f2a197a2
====
merging a
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat >> .hg/hgrc <<EOF
> [hooks]
> preupdate.visibility =
> EOF
== test visibility to external update hook
$ hg update -q -C 2
$ hg --config extensions.strip= strip 3
saved backup bundle to * (glob)
$ cat >> .hg/hgrc <<EOF
> [hooks]
> update.visibility = sh $TESTTMP/checkvisibility.sh update
> EOF
$ hg backout --merge -d '3 0' 1 --tool=true -m 'fixed comment'
==== update:
1:5a50a024c182
====
reverting a
created new head
changeset 3:d92a3f57f067 backs out changeset 1:5a50a024c182
==== update:
2:6ea3f2a197a2
====
merging with changeset 3:d92a3f57f067
merging a
==== update:
2:6ea3f2a197a2
3:d92a3f57f067
====
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat >> .hg/hgrc <<EOF
> [hooks]
> update.visibility =
> EOF
$ cd ..
backout should not back out subsequent changesets
$ hg init onecs
$ cd onecs
$ echo 1 > a
$ hg commit -d '0 0' -A -m a
adding a
$ echo 2 >> a
$ hg commit -d '1 0' -m b
$ echo 1 > b
$ hg commit -d '2 0' -A -m c
adding b
$ hg summary
parent: 2:882396649954 tip
c
branch: default
commit: (clean)
update: (current)
phases: 3 draft
without --merge
$ hg backout --no-commit -d '3 0' 1 --tool=true
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
changeset 22bca4c721e5 backed out, don't forget to commit.
$ hg locate b
b
$ hg update -C tip
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg locate b
b
$ hg summary
parent: 2:882396649954 tip
c
branch: default
commit: (clean)
update: (current)
phases: 3 draft
with --merge
$ hg backout --merge -d '3 0' 1 --tool=true
reverting a
created new head
changeset 3:3202beb76721 backs out changeset 1:22bca4c721e5
merging with changeset 3:3202beb76721
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg locate b
b
$ hg update -C tip
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg locate b
[1]
$ cd ..
$ hg init m
$ cd m
$ echo a > a
$ hg commit -d '0 0' -A -m a
adding a
$ echo b > b
$ hg commit -d '1 0' -A -m b
adding b
$ echo c > c
$ hg commit -d '2 0' -A -m b
adding c
$ hg update 1
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo d > d
$ hg commit -d '3 0' -A -m c
adding d
created new head
$ hg merge 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg commit -d '4 0' -A -m d
$ hg summary
parent: 4:b2f3bb92043e tip
d
branch: default
commit: (clean)
update: (current)
phases: 5 draft
backout of merge should fail
$ hg backout 4
abort: cannot backout a merge changeset
[10]
backout of merge with bad parent should fail
$ hg backout --parent 0 4
abort: cb9a9f314b8b is not a parent of b2f3bb92043e
[10]
backout of non-merge with parent should fail
$ hg backout --parent 0 3
abort: cannot use --parent on non-merge changeset
[10]
backout with valid parent should be ok
$ hg backout -d '5 0' --parent 2 4 --tool=true
removing d
changeset 5:10e5328c8435 backs out changeset 4:b2f3bb92043e
$ hg summary
parent: 5:10e5328c8435 tip
Backed out changeset b2f3bb92043e
branch: default
commit: (clean)
update: (current)
phases: 6 draft
$ hg rollback
repository tip rolled back to revision 4 (undo commit)
working directory now based on revision 4
$ hg update -C
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg summary
parent: 4:b2f3bb92043e tip
d
branch: default
commit: (clean)
update: (current)
phases: 5 draft
$ hg backout -d '6 0' --parent 3 4 --tool=true
removing c
changeset 5:033590168430 backs out changeset 4:b2f3bb92043e
$ hg summary
parent: 5:033590168430 tip
Backed out changeset b2f3bb92043e
branch: default
commit: (clean)
update: (current)
phases: 6 draft
$ cd ..
named branches
$ hg init named_branches
$ cd named_branches
$ echo default > default
$ hg ci -d '0 0' -Am default
adding default
$ hg branch branch1
marked working directory as branch branch1
(branches are permanent and global, did you want a bookmark?)
$ echo branch1 > file1
$ hg ci -d '1 0' -Am file1
adding file1
$ hg branch branch2
marked working directory as branch branch2
$ echo branch2 > file2
$ hg ci -d '2 0' -Am file2
adding file2
without --merge
$ hg backout --no-commit -r 1 --tool=true
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
changeset bf1602f437f3 backed out, don't forget to commit.
$ hg branch
branch2
$ hg status -A
R file1
C default
C file2
$ hg summary
parent: 2:45bbcd363bf0 tip
file2
branch: branch2
commit: 1 removed
update: (current)
phases: 3 draft
with --merge
(this also tests that editor is invoked if '--edit' is specified
explicitly regardless of '--message')
$ hg update -qC
$ HGEDITOR=cat hg backout --merge -d '3 0' -r 1 -m 'backout on branch1' --tool=true --edit
removing file1
backout on branch1
HG: Enter commit message. Lines beginning with 'HG:' are removed.
HG: Leave message empty to abort commit.
HG: --
HG: user: test
HG: branch 'branch2'
HG: removed file1
created new head
changeset 3:d4e8f6db59fb backs out changeset 1:bf1602f437f3
merging with changeset 3:d4e8f6db59fb
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg summary
parent: 2:45bbcd363bf0
file2
parent: 3:d4e8f6db59fb tip
backout on branch1
branch: branch2
commit: 1 removed (merge)
update: (current)
phases: 4 draft
$ hg update -q -C 2
on branch2 with branch1 not merged, so file1 should still exist:
$ hg id
45bbcd363bf0 (branch2)
$ hg st -A
C default
C file1
C file2
$ hg summary
parent: 2:45bbcd363bf0
file2
branch: branch2
commit: (clean)
update: 1 new changesets, 2 branch heads (merge)
phases: 4 draft
on branch2 with branch1 merged, so file1 should be gone:
$ hg merge
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg ci -d '4 0' -m 'merge backout of branch1'
$ hg id
d97a8500a969 (branch2) tip
$ hg st -A
C default
C file2
$ hg summary
parent: 4:d97a8500a969 tip
merge backout of branch1
branch: branch2
commit: (clean)
update: (current)
phases: 5 draft
on branch1, so no file1 and file2:
$ hg co -C branch1
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg id
bf1602f437f3 (branch1)
$ hg st -A
C default
C file1
$ hg summary
parent: 1:bf1602f437f3
file1
branch: branch1
commit: (clean)
update: (current)
phases: 5 draft
$ cd ..
backout of empty changeset (issue4190)
$ hg init emptycommit
$ cd emptycommit
$ touch file1
$ hg ci -Aqm file1
$ hg branch -q branch1
$ hg ci -qm branch1
$ hg backout -v 1
resolving manifests
nothing changed
[1]
$ cd ..
Test usage of `hg resolve` in case of conflict
(issue4163)
$ hg init issue4163
$ cd issue4163
$ touch foo
$ hg add foo
$ cat > foo << EOF
> one
> two
> three
> four
> five
> six
> seven
> height
> nine
> ten
> EOF
$ hg ci -m 'initial'
$ cat > foo << EOF
> one
> two
> THREE
> four
> five
> six
> seven
> height
> nine
> ten
> EOF
$ hg ci -m 'capital three'
$ cat > foo << EOF
> one
> two
> THREE
> four
> five
> six
> seven
> height
> nine
> TEN
> EOF
$ hg ci -m 'capital ten'
$ hg backout -r 'desc("capital three")' --tool internal:fail
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges
[1]
$ hg status
$ hg debugmergestate -v
v1 and v2 states match: using v2
local: b71750c4b0fdf719734971e3ef90dbeab5919a2d
other: a30dd8addae3ce71b8667868478542bc417439e6
file: foo (state "u")
local path: foo (hash 0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33, flags "")
ancestor path: foo (node f89532f44c247a0e993d63e3a734dd781ab04708)
other path: foo (node f50039b486d6fa1a90ae51778388cad161f425ee)
extra: ancestorlinknode = 91360952243723bd5b1138d5f26bd8c8564cb553
$ mv .hg/merge/state2 .hg/merge/state2-moved
$ hg debugmergestate -v
no version 2 merge state
local: b71750c4b0fdf719734971e3ef90dbeab5919a2d
other: b71750c4b0fdf719734971e3ef90dbeab5919a2d
file: foo (state "u")
local path: foo (hash 0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33, flags "")
ancestor path: foo (node f89532f44c247a0e993d63e3a734dd781ab04708)
other path: (node foo)
$ mv .hg/merge/state2-moved .hg/merge/state2
$ hg resolve -l # still unresolved
U foo
$ hg summary
parent: 2:b71750c4b0fd tip
capital ten
branch: default
commit: 1 unresolved (clean)
update: (current)
phases: 3 draft
$ hg log -G
@ changeset: 2:b71750c4b0fd
| tag: tip
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: capital ten
|
o changeset: 1:913609522437
| user: test
| date: Thu Jan 01 00:00:00 1970 +0000
| summary: capital three
|
% changeset: 0:a30dd8addae3
user: test
date: Thu Jan 01 00:00:00 1970 +0000
summary: initial
$ hg resolve --all --debug
picked tool ':merge' for foo (binary False symlink False changedelete False)
merging foo
my foo@b71750c4b0fd+ other foo@a30dd8addae3 ancestor foo@913609522437
premerge successful
(no more unresolved files)
continue: hg commit
$ hg status
M foo
? foo.orig
$ hg resolve -l
R foo
$ hg summary
parent: 2:b71750c4b0fd tip
capital ten
branch: default
commit: 1 modified, 1 unknown
update: (current)
phases: 3 draft
$ cat foo
one
two
three
four
five
six
seven
height
nine
TEN
--no-commit shouldn't commit
$ hg init a
$ cd a
$ for i in 1 2 3; do
> touch $i
> hg ci -Am $i
> done
adding 1
adding 2
adding 3
$ hg backout --no-commit .
removing 3
changeset cccc23d9d68f backed out, don't forget to commit.
$ hg revert -aq
--no-commit can't be used with --merge
$ hg backout --merge --no-commit 2
abort: cannot specify both --no-commit and --merge
[10]
Ensure that backout out the same changeset twice performs correctly:
$ hg backout 2
removing 3
changeset 3:8f188de730d9 backs out changeset 2:cccc23d9d68f
$ echo 4 > 4
$ hg ci -A -m 4
adding 4
$ hg up 2
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg backout 2
removing 3
warning: commit already existed in the repository!
changeset 3:8f188de730d9 backs out changeset 2:cccc23d9d68f