Mercurial > hg
view tests/test-resolve.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 | 36383507a6f8 |
children | c0aab5961876 |
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test that a commit clears the merge state. $ hg init repo $ cd repo $ echo foo > file1 $ echo foo > file2 $ hg commit -Am 'add files' adding file1 adding file2 $ echo bar >> file1 $ echo bar >> file2 $ hg commit -Am 'append bar to files' create a second head with conflicting edits $ hg up -C 0 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo baz >> file1 $ echo baz >> file2 $ hg commit -Am 'append baz to files' created new head create a third head with no conflicting edits $ hg up -qC 0 $ echo foo > file3 $ hg commit -Am 'add non-conflicting file' adding file3 created new head failing merge $ hg up -qC 2 $ hg merge --tool=internal:fail 1 0 files updated, 0 files merged, 0 files removed, 2 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] resolve -l should contain unresolved entries $ hg resolve -l U file1 U file2 $ hg resolve -l --no-status file1 file2 resolving an unknown path should emit a warning, but not for -l $ hg resolve -m does-not-exist arguments do not match paths that need resolving $ hg resolve -l does-not-exist resolve the failure $ echo resolved > file1 $ hg resolve -m file1 resolve -l should show resolved file as resolved $ hg resolve -l R file1 U file2 $ hg resolve -l -Tjson [ { "path": "file1", "status": "R" }, { "path": "file2", "status": "U" } ] resolve -m without paths should mark all resolved $ hg resolve -m (no more unresolved files) $ hg commit -m 'resolved' resolve -l should be empty after commit $ hg resolve -l $ hg resolve -l -Tjson [ ] resolve --all should abort when no merge in progress $ hg resolve --all abort: resolve command not applicable when not merging [255] resolve -m should abort when no merge in progress $ hg resolve -m abort: resolve command not applicable when not merging [255] set up conflict-free merge $ hg up -qC 3 $ hg merge 1 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) resolve --all should do nothing in merge without conflicts $ hg resolve --all (no more unresolved files) resolve -m should do nothing in merge without conflicts $ hg resolve -m (no more unresolved files) get back to conflicting state $ hg up -qC 2 $ hg merge --tool=internal:fail 1 0 files updated, 0 files merged, 0 files removed, 2 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] resolve without arguments should suggest --all $ hg resolve abort: no files or directories specified (use --all to re-merge all unresolved files) [255] resolve --all should re-merge all unresolved files $ hg resolve --all merging file1 merging file2 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') warning: conflicts while merging file2! (edit, then use 'hg resolve --mark') [1] $ cat file1.orig foo baz $ cat file2.orig foo baz $ grep '<<<' file1 > /dev/null $ grep '<<<' file2 > /dev/null resolve <file> should re-merge file $ echo resolved > file1 $ hg resolve -q file1 warning: conflicts while merging file1! (edit, then use 'hg resolve --mark') [1] $ grep '<<<' file1 > /dev/null resolve <file> should do nothing if 'file' was marked resolved $ echo resolved > file1 $ hg resolve -m file1 $ hg resolve -q file1 $ cat file1 resolved test crashed merge with empty mergestate $ hg up -qC 1 $ mkdir .hg/merge $ touch .hg/merge/state resolve -l should be empty $ hg resolve -l $ cd ..