Mercurial > hg
view tests/test-check-code.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 | e78447e61624 |
children | 3203dfe341f9 |
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$ cat > correct.py <<EOF > def toto(arg1, arg2): > del arg2 > return (5 + 6, 9) > EOF $ cat > wrong.py <<EOF > def toto( arg1, arg2): > del(arg2) > return ( 5+6, 9) > EOF $ cat > quote.py <<EOF > # let's use quote in comments > (''' ( 4x5 ) > but """\\''' and finally''', > """let's fool checkpatch""", '1+2', > '"""', 42+1, """and > ( 4-1 ) """, "( 1+1 )\" and ") > a, '\\\\\\\\', "\\\\\\" x-2", "c-1" > EOF $ cat > classstyle.py <<EOF > class newstyle_class(object): > pass > > class oldstyle_class: > pass > > class empty(): > pass > > no_class = 1: > pass > EOF $ check_code="$TESTDIR"/../contrib/check-code.py $ "$check_code" ./wrong.py ./correct.py ./quote.py ./classstyle.py ./wrong.py:1: > def toto( arg1, arg2): gratuitous whitespace in () or [] ./wrong.py:2: > del(arg2) Python keyword is not a function ./wrong.py:3: > return ( 5+6, 9) gratuitous whitespace in () or [] missing whitespace in expression ./quote.py:5: > '"""', 42+1, """and missing whitespace in expression ./classstyle.py:4: > class oldstyle_class: old-style class, use class foo(object) ./classstyle.py:7: > class empty(): class foo() creates old style object, use class foo(object) [1] $ cat > python3-compat.py << EOF > foo <> bar > reduce(lambda a, b: a + b, [1, 2, 3, 4]) > dict(key=value) > EOF $ "$check_code" python3-compat.py python3-compat.py:1: > foo <> bar <> operator is not available in Python 3+, use != python3-compat.py:2: > reduce(lambda a, b: a + b, [1, 2, 3, 4]) reduce is not available in Python 3+ python3-compat.py:3: > dict(key=value) dict() is different in Py2 and 3 and is slower than {} [1] $ cat > is-op.py <<EOF > # is-operator comparing number or string literal > x = None > y = x is 'foo' > y = x is "foo" > y = x is 5346 > y = x is -6 > y = x is not 'foo' > y = x is not "foo" > y = x is not 5346 > y = x is not -6 > EOF $ "$check_code" ./is-op.py ./is-op.py:3: > y = x is 'foo' object comparison with literal ./is-op.py:4: > y = x is "foo" object comparison with literal ./is-op.py:5: > y = x is 5346 object comparison with literal ./is-op.py:6: > y = x is -6 object comparison with literal ./is-op.py:7: > y = x is not 'foo' object comparison with literal ./is-op.py:8: > y = x is not "foo" object comparison with literal ./is-op.py:9: > y = x is not 5346 object comparison with literal ./is-op.py:10: > y = x is not -6 object comparison with literal [1] $ cat > for-nolineno.py <<EOF > except: > EOF $ "$check_code" for-nolineno.py --nolineno for-nolineno.py:0: > except: naked except clause [1] $ cat > warning.t <<EOF > $ function warnonly { > > } > $ diff -N aaa > $ function onwarn {} > EOF $ "$check_code" warning.t $ "$check_code" --warn warning.t warning.t:1: > $ function warnonly { warning: don't use 'function', use old style warning.t:3: > $ diff -N aaa warning: don't use 'diff -N' warning.t:4: > $ function onwarn {} warning: don't use 'function', use old style [1] $ cat > raise-format.py <<EOF > raise SomeException, message > # this next line is okay > raise SomeException(arg1, arg2) > EOF $ "$check_code" not-existing.py raise-format.py Skipping*not-existing.py* (glob) raise-format.py:1: > raise SomeException, message don't use old-style two-argument raise, use Exception(message) [1] $ cat > rst.py <<EOF > """problematic rst text > > .. note:: > wrong > """ > > ''' > > .. note:: > > valid > > new text > > .. note:: > > also valid > ''' > > """mixed > > .. note:: > > good > > .. note:: > plus bad > """ > EOF $ $check_code -w rst.py rst.py:3: > .. note:: warning: add two newlines after '.. note::' rst.py:26: > .. note:: warning: add two newlines after '.. note::' [1] $ cat > ./map-inside-gettext.py <<EOF > print _("map inside gettext %s" % v) > > print _("concatenating " " by " " space %s" % v) > print _("concatenating " + " by " + " '+' %s" % v) > > print _("mapping operation in different line %s" > % v) > > print _( > "leading spaces inside of '(' %s" % v) > EOF $ "$check_code" ./map-inside-gettext.py ./map-inside-gettext.py:1: > print _("map inside gettext %s" % v) don't use % inside _() ./map-inside-gettext.py:3: > print _("concatenating " " by " " space %s" % v) don't use % inside _() ./map-inside-gettext.py:4: > print _("concatenating " + " by " + " '+' %s" % v) don't use % inside _() ./map-inside-gettext.py:6: > print _("mapping operation in different line %s" don't use % inside _() ./map-inside-gettext.py:9: > print _( don't use % inside _() [1] web templates $ mkdir -p mercurial/templates $ cat > mercurial/templates/example.tmpl <<EOF > {desc} > {desc|escape} > {desc|firstline} > {desc|websub} > EOF $ "$check_code" --warnings mercurial/templates/example.tmpl mercurial/templates/example.tmpl:2: > {desc|escape} warning: follow desc keyword with either firstline or websub [1]