test: add test-transaction-rollback-on-sigpipe.t demonstrating py3 regression
When an hg push is interrupted with C-c, the remote [hg serve] command
receives SIGPIPE.
If a pretxnchangegroup hook fails, the remote hg then tries to
rollback the transaction. It begins by printing "transaction
abort!\n". This returns EPIPE, but ui.py ignores that error.
In python3 (but not python2), this "transaction abort!\n" message
stays in a buffer, so future flushes of stderr will try to print the
message again, and so those flushes will also hit EPIPE.
This test demonstrates such a case where this EPIPE causes the
transaction rollback to fail, leaving behind an abandoned transaction.
Differential Revision: https://phab.mercurial-scm.org/D9151
$ hg init a
$ hg clone a b
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd a
with no paths:
$ hg paths
$ hg paths unknown
not found!
[1]
$ hg paths -Tjson
[
]
with paths:
$ echo '[paths]' >> .hg/hgrc
$ echo 'dupe = ../b#tip' >> .hg/hgrc
$ echo 'expand = $SOMETHING/bar' >> .hg/hgrc
$ hg in dupe
comparing with $TESTTMP/b
no changes found
[1]
$ cd ..
$ hg -R a in dupe
comparing with $TESTTMP/b
no changes found
[1]
$ cd a
$ hg paths
dupe = $TESTTMP/b#tip
expand = $TESTTMP/a/$SOMETHING/bar
$ SOMETHING=foo hg paths
dupe = $TESTTMP/b#tip
expand = $TESTTMP/a/foo/bar
#if msys
$ SOMETHING=//foo hg paths
dupe = $TESTTMP/b#tip
expand = /foo/bar
#else
$ SOMETHING=/foo hg paths
dupe = $TESTTMP/b#tip
expand = /foo/bar
#endif
$ hg paths -q
dupe
expand
$ hg paths dupe
$TESTTMP/b#tip
$ hg paths -q dupe
$ hg paths unknown
not found!
[1]
$ hg paths -q unknown
[1]
formatter output with paths:
$ echo 'dupe:pushurl = https://example.com/dupe' >> .hg/hgrc
$ hg paths -Tjson | sed 's|\\\\|\\|g'
[
{
"name": "dupe",
"pushurl": "https://example.com/dupe",
"url": "$TESTTMP/b#tip"
},
{
"name": "expand",
"url": "$TESTTMP/a/$SOMETHING/bar"
}
]
$ hg paths -Tjson dupe | sed 's|\\\\|\\|g'
[
{
"name": "dupe",
"pushurl": "https://example.com/dupe",
"url": "$TESTTMP/b#tip"
}
]
$ hg paths -Tjson -q unknown
[
]
[1]
log template:
(behaves as a {name: path-string} dict by default)
$ hg log -rnull -T '{peerurls}\n'
dupe=$TESTTMP/b#tip expand=$TESTTMP/a/$SOMETHING/bar
$ hg log -rnull -T '{join(peerurls, "\n")}\n'
dupe=$TESTTMP/b#tip
expand=$TESTTMP/a/$SOMETHING/bar
$ hg log -rnull -T '{peerurls % "{name}: {url}\n"}'
dupe: $TESTTMP/b#tip
expand: $TESTTMP/a/$SOMETHING/bar
$ hg log -rnull -T '{get(peerurls, "dupe")}\n'
$TESTTMP/b#tip
(sub options can be populated by map/dot operation)
$ hg log -rnull \
> -T '{get(peerurls, "dupe") % "url: {url}\npushurl: {pushurl}\n"}'
url: $TESTTMP/b#tip
pushurl: https://example.com/dupe
$ hg log -rnull -T '{peerurls.dupe.pushurl}\n'
https://example.com/dupe
(in JSON, it's a dict of urls)
$ hg log -rnull -T '{peerurls|json}\n' | sed 's|\\\\|/|g'
{"dupe": "$TESTTMP/b#tip", "expand": "$TESTTMP/a/$SOMETHING/bar"}
password should be masked in plain output, but not in machine-readable/template
output:
$ echo 'insecure = http://foo:insecure@example.com/' >> .hg/hgrc
$ hg paths insecure
http://foo:***@example.com/
$ hg paths -Tjson insecure
[
{
"name": "insecure",
"url": "http://foo:insecure@example.com/"
}
]
$ hg log -rnull -T '{get(peerurls, "insecure")}\n'
http://foo:insecure@example.com/
zeroconf wraps ui.configitems(), which shouldn't crash at least:
$ hg paths --config extensions.zeroconf=
dupe = $TESTTMP/b#tip
dupe:pushurl = https://example.com/dupe
expand = $TESTTMP/a/$SOMETHING/bar
insecure = http://foo:***@example.com/
$ cd ..
sub-options for an undeclared path are ignored
$ hg init suboptions
$ cd suboptions
$ cat > .hg/hgrc << EOF
> [paths]
> path0 = https://example.com/path0
> path1:pushurl = https://example.com/path1
> EOF
$ hg paths
path0 = https://example.com/path0
unknown sub-options aren't displayed
$ cat > .hg/hgrc << EOF
> [paths]
> path0 = https://example.com/path0
> path0:foo = https://example.com/path1
> EOF
$ hg paths
path0 = https://example.com/path0
:pushurl must be a URL
$ cat > .hg/hgrc << EOF
> [paths]
> default = /path/to/nothing
> default:pushurl = /not/a/url
> EOF
$ hg paths
(paths.default:pushurl not a URL; ignoring)
default = /path/to/nothing
#fragment is not allowed in :pushurl
$ cat > .hg/hgrc << EOF
> [paths]
> default = https://example.com/repo
> invalid = https://example.com/repo
> invalid:pushurl = https://example.com/repo#branch
> EOF
$ hg paths
("#fragment" in paths.invalid:pushurl not supported; ignoring)
default = https://example.com/repo
invalid = https://example.com/repo
invalid:pushurl = https://example.com/repo
$ cd ..
'file:' disables [paths] entries for clone destination
$ cat >> $HGRCPATH <<EOF
> [paths]
> gpath1 = http://hg.example.com
> EOF
$ hg clone a gpath1
abort: cannot create new http repository
[255]
$ hg clone a file:gpath1
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd gpath1
$ hg -q id
000000000000
$ cd ..