Mercurial > hg
view tests/test-url-rev.t @ 26631:e077ce385609
localrepo: restore dirstate to one before rollbacking if not parent-gone
'localrepository.rollback()' explicilty restores dirstate, only if at
least one of current parents of the working directory is removed at
rollbacking (a.k.a "parent-gone").
After DirstateTransactionPlan, 'dirstate.write()' will cause marking
'.hg/dirstate' as a file to be restored at rollbacking.
https://mercurial.selenic.com/wiki/DirstateTransactionPlan
Then, 'transaction.rollback()' restores '.hg/dirstate' regardless of
parents of the working directory at that time, and this causes
unexpected dirstate changes if not "parent-gone" (e.g. "hg update" to
another branch after "hg commit" or so, then "hg rollback").
To avoid such situation, this patch restores dirstate to one before
rollbacking if not "parent-gone".
before:
b1. restore dirstate explicitly, if "parent-gone"
after:
a1. save dirstate before actual rollbacking via dirstateguard
a2. restore dirstate via 'transaction.rollback()'
a3. if "parent-gone"
- discard backup (a1)
- restore dirstate from 'undo.dirstate'
a4. otherwise, restore dirstate from backup (a1)
Even though restoring dirstate at (a3) after (a2) seems redundant,
this patch keeps this existing code path, because:
- it isn't ensured that 'dirstate.write()' was invoked at least once
while transaction running
If not, '.hg/dirstate' isn't restored at (a2).
In addition to it, rude 3rd party extension invoking
'dirstate.write()' without 'repo' while transaction running (see
subsequent patches for detail) may break consistency of a file
backup-ed by transaction.
- this patch mainly focuses on changes for DirstateTransactionPlan
Restoring dirstate at (a3) itself should be cheaper enough than
rollbacking itself. Redundancy will be removed in next step.
Newly added test is almost meaningless at this point. It will be used
to detect regression while implementing delayed dirstate write out.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Tue, 13 Oct 2015 12:25:43 -0700 |
parents | 6084926366b9 |
children | 3d2ea1403c62 |
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Test basic functionality of url#rev syntax $ hg init repo $ cd repo $ echo a > a $ hg ci -qAm 'add a' $ hg branch foo marked working directory as branch foo (branches are permanent and global, did you want a bookmark?) $ echo >> a $ hg ci -m 'change a' $ cd .. $ hg clone 'repo#foo' clone adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 1 files updating to branch foo 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --cwd clone heads changeset: 1:cd2a86ecc814 branch: foo tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: change a changeset: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add a $ hg --cwd clone parents changeset: 1:cd2a86ecc814 branch: foo tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: change a $ cat clone/.hg/hgrc # example repository config (see "hg help config" for more info) [paths] default = $TESTTMP/repo#foo (glob) # path aliases to other clones of this repo in URLs or filesystem paths # (see "hg help config.paths" for more info) # # default-push = ssh://jdoe@example.net/hg/jdoes-fork # my-fork = ssh://jdoe@example.net/hg/jdoes-fork # my-clone = /home/jdoe/jdoes-clone [ui] # name and email (local to this repository, optional), e.g. # username = Jane Doe <jdoe@example.com> Changing original repo: $ cd repo $ echo >> a $ hg ci -m 'new head of branch foo' $ hg up -qC default $ echo bar > bar $ hg ci -qAm 'add bar' $ hg log changeset: 3:4cd725637392 tag: tip parent: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add bar changeset: 2:faba9097cad4 branch: foo user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: new head of branch foo changeset: 1:cd2a86ecc814 branch: foo user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: change a changeset: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add a $ hg -q outgoing '../clone' 2:faba9097cad4 3:4cd725637392 $ hg summary --remote --config paths.default='../clone' parent: 3:4cd725637392 tip add bar branch: default commit: (clean) update: (current) phases: 4 draft remote: 2 outgoing $ hg -q outgoing '../clone#foo' 2:faba9097cad4 $ hg summary --remote --config paths.default='../clone#foo' parent: 3:4cd725637392 tip add bar branch: default commit: (clean) update: (current) phases: 4 draft remote: 1 outgoing $ hg -q --cwd ../clone incoming '../repo#foo' 2:faba9097cad4 $ hg --cwd ../clone summary --remote --config paths.default='../repo#foo' parent: 1:cd2a86ecc814 tip change a branch: foo commit: (clean) update: (current) remote: 1 or more incoming $ hg -q push '../clone#foo' $ hg --cwd ../clone heads changeset: 2:faba9097cad4 branch: foo tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: new head of branch foo changeset: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add a $ hg -q --cwd ../clone incoming '../repo#foo' [1] $ hg --cwd ../clone summary --remote --config paths.default='../repo#foo' parent: 1:cd2a86ecc814 change a branch: foo commit: (clean) update: 1 new changesets (update) remote: (synced) $ cd .. $ cd clone $ hg rollback repository tip rolled back to revision 1 (undo push) $ hg -q incoming 2:faba9097cad4 $ hg -q pull $ hg heads changeset: 2:faba9097cad4 branch: foo tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: new head of branch foo changeset: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add a Pull should not have updated: $ hg parents -q 1:cd2a86ecc814 Going back to the default branch: $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg parents changeset: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add a No new revs, no update: $ hg pull -qu $ hg parents -q 0:1f0dee641bb7 $ hg rollback repository tip rolled back to revision 1 (undo pull) $ hg parents -q 0:1f0dee641bb7 Pull -u takes us back to branch foo: $ hg pull -qu $ hg parents changeset: 2:faba9097cad4 branch: foo tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: new head of branch foo $ hg rollback repository tip rolled back to revision 1 (undo pull) working directory now based on revision 0 $ hg up -C 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg parents -q 0:1f0dee641bb7 $ hg heads -q 1:cd2a86ecc814 0:1f0dee641bb7 $ hg pull -qur default default $ hg parents changeset: 3:4cd725637392 tag: tip parent: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add bar $ hg heads changeset: 3:4cd725637392 tag: tip parent: 0:1f0dee641bb7 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: add bar changeset: 2:faba9097cad4 branch: foo user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: new head of branch foo Test handling of invalid urls $ hg id http://foo/?bar abort: unsupported URL component: "bar" [255] $ cd .. Test handling common incoming revisions between "default" and "default-push" $ hg -R clone rollback repository tip rolled back to revision 1 (undo pull) working directory now based on revision 0 $ cd repo $ hg update -q -C default $ echo modified >> bar $ hg commit -m "new head to push current default head" $ hg -q push -r ".^1" '../clone' $ hg -q outgoing '../clone' 2:faba9097cad4 4:d515801a8f3d $ hg summary --remote --config paths.default='../clone#default' --config paths.default-push='../clone#foo' parent: 4:d515801a8f3d tip new head to push current default head branch: default commit: (clean) update: (current) phases: 1 draft remote: 1 outgoing $ hg summary --remote --config paths.default='../clone#foo' --config paths.default-push='../clone' parent: 4:d515801a8f3d tip new head to push current default head branch: default commit: (clean) update: (current) phases: 1 draft remote: 2 outgoing $ hg summary --remote --config paths.default='../clone' --config paths.default-push='../clone#foo' parent: 4:d515801a8f3d tip new head to push current default head branch: default commit: (clean) update: (current) phases: 1 draft remote: 1 outgoing $ hg clone -q -r 0 . ../another $ hg -q outgoing '../another#default' 3:4cd725637392 4:d515801a8f3d $ hg summary --remote --config paths.default='../another#default' --config paths.default-push='../clone#default' parent: 4:d515801a8f3d tip new head to push current default head branch: default commit: (clean) update: (current) phases: 1 draft remote: 1 outgoing $ cd ..