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
#testcases extra sidedata
#if extra
$ cat >> $HGRCPATH << EOF
> [experimental]
> copies.write-to=changeset-only
> copies.read-from=changeset-only
> [alias]
> changesetcopies = log -r . -T 'files: {files}
> {extras % "{ifcontains("files", key, "{key}: {value}\n")}"}
> {extras % "{ifcontains("copies", key, "{key}: {value}\n")}"}'
> EOF
#endif
#if sidedata
$ cat >> $HGRCPATH << EOF
> [format]
> exp-use-copies-side-data-changeset = yes
> EOF
#endif
$ cat >> $HGRCPATH << EOF
> [alias]
> showcopies = log -r . -T '{file_copies % "{source} -> {name}\n"}'
> [extensions]
> rebase =
> split =
> EOF
Check that copies are recorded correctly
$ hg init repo
$ cd repo
#if sidedata
$ hg debugformat -v
format-variant repo config default
fncache: yes yes yes
dotencode: yes yes yes
generaldelta: yes yes yes
sparserevlog: yes yes yes
sidedata: yes yes no
persistent-nodemap: no no no
copies-sdc: yes yes no
plain-cl-delta: yes yes yes
compression: zlib zlib zlib
compression-level: default default default
#else
$ hg debugformat -v
format-variant repo config default
fncache: yes yes yes
dotencode: yes yes yes
generaldelta: yes yes yes
sparserevlog: yes yes yes
sidedata: no no no
persistent-nodemap: no no no
copies-sdc: no no no
plain-cl-delta: yes yes yes
compression: zlib zlib zlib
compression-level: default default default
#endif
$ echo a > a
$ hg add a
$ hg ci -m initial
$ hg cp a b
$ hg cp a c
$ hg cp a d
$ hg ci -m 'copy a to b, c, and d'
#if extra
$ hg changesetcopies
files: b c d
filesadded: 0
1
2
p1copies: 0\x00a (esc)
1\x00a (esc)
2\x00a (esc)
#else
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 44
'\x00\x00\x00\x04\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00\x06\x00\x00\x00\x03\x00\x00\x00\x00\x06\x00\x00\x00\x04\x00\x00\x00\x00abcd'
#endif
$ hg showcopies
a -> b
a -> c
a -> d
#if extra
$ hg showcopies --config experimental.copies.read-from=compatibility
a -> b
a -> c
a -> d
$ hg showcopies --config experimental.copies.read-from=filelog-only
#endif
Check that renames are recorded correctly
$ hg mv b b2
$ hg ci -m 'rename b to b2'
#if extra
$ hg changesetcopies
files: b b2
filesadded: 1
filesremoved: 0
p1copies: 1\x00b (esc)
#else
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 25
'\x00\x00\x00\x02\x0c\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x03\x00\x00\x00\x00bb2'
#endif
$ hg showcopies
b -> b2
Rename onto existing file. This should get recorded in the changeset files list and in the extras,
even though there is no filelog entry.
$ hg cp b2 c --force
$ hg st --copies
M c
b2
#if extra
$ hg debugindex c
rev linkrev nodeid p1 p2
0 1 b789fdd96dc2 000000000000 000000000000
#else
$ hg debugindex c
rev linkrev nodeid p1 p2
0 1 37d9b5d994ea 000000000000 000000000000
#endif
$ hg ci -m 'move b onto d'
#if extra
$ hg changesetcopies
files: c
p1copies: 0\x00b2 (esc)
#else
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 25
'\x00\x00\x00\x02\x00\x00\x00\x00\x02\x00\x00\x00\x00\x16\x00\x00\x00\x03\x00\x00\x00\x00b2c'
#endif
$ hg showcopies
b2 -> c
#if extra
$ hg debugindex c
rev linkrev nodeid p1 p2
0 1 b789fdd96dc2 000000000000 000000000000
#else
$ hg debugindex c
rev linkrev nodeid p1 p2
0 1 37d9b5d994ea 000000000000 000000000000
1 3 029625640347 000000000000 000000000000
#endif
Create a merge commit with copying done during merge.
$ hg co 0
0 files updated, 0 files merged, 3 files removed, 0 files unresolved
$ hg cp a e
$ hg cp a f
$ hg ci -m 'copy a to e and f'
created new head
$ hg merge 3
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
File 'a' exists on both sides, so 'g' could be recorded as being from p1 or p2, but we currently
always record it as being from p1
$ hg cp a g
File 'd' exists only in p2, so 'h' should be from p2
$ hg cp d h
File 'f' exists only in p1, so 'i' should be from p1
$ hg cp f i
$ hg ci -m 'merge'
#if extra
$ hg changesetcopies
files: g h i
filesadded: 0
1
2
p1copies: 0\x00a (esc)
2\x00f (esc)
p2copies: 1\x00d (esc)
#else
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 64
'\x00\x00\x00\x06\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x06\x00\x00\x00\x04\x00\x00\x00\x00\x07\x00\x00\x00\x05\x00\x00\x00\x01\x06\x00\x00\x00\x06\x00\x00\x00\x02adfghi'
#endif
$ hg showcopies
a -> g
d -> h
f -> i
Test writing to both changeset and filelog
$ hg cp a j
#if extra
$ hg ci -m 'copy a to j' --config experimental.copies.write-to=compatibility
$ hg changesetcopies
files: j
filesadded: 0
filesremoved:
p1copies: 0\x00a (esc)
p2copies:
#else
$ hg ci -m 'copy a to j'
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 24
'\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00aj'
#endif
$ hg debugdata j 0
\x01 (esc)
copy: a
copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
\x01 (esc)
a
$ hg showcopies
a -> j
$ hg showcopies --config experimental.copies.read-from=compatibility
a -> j
$ hg showcopies --config experimental.copies.read-from=filelog-only
a -> j
Existing copy information in the changeset gets removed on amend and writing
copy information on to the filelog
#if extra
$ hg ci --amend -m 'copy a to j, v2' \
> --config experimental.copies.write-to=filelog-only
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-*-amend.hg (glob)
$ hg changesetcopies
files: j
#else
$ hg ci --amend -m 'copy a to j, v2'
saved backup bundle to $TESTTMP/repo/.hg/strip-backup/*-*-amend.hg (glob)
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 24
'\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00aj'
#endif
$ hg showcopies --config experimental.copies.read-from=filelog-only
a -> j
The entries should be written to extras even if they're empty (so the client
won't have to fall back to reading from filelogs)
$ echo x >> j
#if extra
$ hg ci -m 'modify j' --config experimental.copies.write-to=compatibility
$ hg changesetcopies
files: j
filesadded:
filesremoved:
p1copies:
p2copies:
#else
$ hg ci -m 'modify j'
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 14
'\x00\x00\x00\x01\x14\x00\x00\x00\x01\x00\x00\x00\x00j'
#endif
Test writing only to filelog
$ hg cp a k
#if extra
$ hg ci -m 'copy a to k' --config experimental.copies.write-to=filelog-only
$ hg changesetcopies
files: k
#else
$ hg ci -m 'copy a to k'
$ hg debugsidedata -c -v -- -1
1 sidedata entries
entry-0014 size 24
'\x00\x00\x00\x02\x00\x00\x00\x00\x01\x00\x00\x00\x00\x06\x00\x00\x00\x02\x00\x00\x00\x00ak'
#endif
$ hg debugdata k 0
\x01 (esc)
copy: a
copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
\x01 (esc)
a
#if extra
$ hg showcopies
$ hg showcopies --config experimental.copies.read-from=compatibility
a -> k
$ hg showcopies --config experimental.copies.read-from=filelog-only
a -> k
#else
$ hg showcopies
a -> k
#endif
$ cd ..
Test rebasing a commit with copy information
$ hg init rebase-rename
$ cd rebase-rename
$ echo a > a
$ hg ci -Aqm 'add a'
$ echo a2 > a
$ hg ci -m 'modify a'
$ hg co -q 0
$ hg mv a b
$ hg ci -qm 'rename a to b'
$ hg rebase -d 1 --config rebase.experimental.inmemory=yes
rebasing 2:* "rename a to b" (tip) (glob)
merging a and b to b
saved backup bundle to $TESTTMP/rebase-rename/.hg/strip-backup/*-*-rebase.hg (glob)
$ hg st --change . --copies
A b
a
R a
$ cd ..
Test splitting a commit
$ hg init split
$ cd split
$ echo a > a
$ echo b > b
$ hg ci -Aqm 'add a and b'
$ echo a2 > a
$ hg mv b c
$ hg ci -m 'modify a, move b to c'
$ hg --config ui.interactive=yes split <<EOF
> y
> y
> n
> y
> EOF
diff --git a/a b/a
1 hunks, 1 lines changed
examine changes to 'a'?
(enter ? for help) [Ynesfdaq?] y
@@ -1,1 +1,1 @@
-a
+a2
record this change to 'a'?
(enter ? for help) [Ynesfdaq?] y
diff --git a/b b/c
rename from b
rename to c
examine changes to 'b' and 'c'?
(enter ? for help) [Ynesfdaq?] n
created new head
diff --git a/b b/c
rename from b
rename to c
examine changes to 'b' and 'c'?
(enter ? for help) [Ynesfdaq?] y
saved backup bundle to $TESTTMP/split/.hg/strip-backup/*-*-split.hg (glob)
$ cd ..
Test committing half a rename
$ hg init partial
$ cd partial
$ echo a > a
$ hg ci -Aqm 'add a'
$ hg mv a b
$ hg ci -m 'remove a' a
#if sidedata
Test upgrading/downgrading to sidedata storage
==============================================
downgrading (keeping some sidedata)
$ hg debugformat -v
format-variant repo config default
fncache: yes yes yes
dotencode: yes yes yes
generaldelta: yes yes yes
sparserevlog: yes yes yes
sidedata: yes yes no
persistent-nodemap: no no no
copies-sdc: yes yes no
plain-cl-delta: yes yes yes
compression: zlib zlib zlib
compression-level: default default default
$ hg debugsidedata -c -- 0
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -c -- 1
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -m -- 0
$ cat << EOF > .hg/hgrc
> [format]
> exp-use-side-data = yes
> exp-use-copies-side-data-changeset = no
> EOF
$ hg debugupgraderepo --run --quiet --no-backup > /dev/null
$ hg debugformat -v
format-variant repo config default
fncache: yes yes yes
dotencode: yes yes yes
generaldelta: yes yes yes
sparserevlog: yes yes yes
sidedata: yes yes no
persistent-nodemap: no no no
copies-sdc: no no no
plain-cl-delta: yes yes yes
compression: zlib zlib zlib
compression-level: default default default
$ hg debugsidedata -c -- 0
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -c -- 1
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -m -- 0
upgrading
$ cat << EOF > .hg/hgrc
> [format]
> exp-use-copies-side-data-changeset = yes
> EOF
$ hg debugupgraderepo --run --quiet --no-backup > /dev/null
$ hg debugformat -v
format-variant repo config default
fncache: yes yes yes
dotencode: yes yes yes
generaldelta: yes yes yes
sparserevlog: yes yes yes
sidedata: yes yes no
persistent-nodemap: no no no
copies-sdc: yes yes no
plain-cl-delta: yes yes yes
compression: zlib zlib zlib
compression-level: default default default
$ hg debugsidedata -c -- 0
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -c -- 1
1 sidedata entries
entry-0014 size 14
$ hg debugsidedata -m -- 0
#endif
$ cd ..