debugcommands: introduce actions to perform deterministic reads
"readavailable" is useful as a debugging device to see what data is
available on a pipe. But the mechanism isn't deterministic because
what's available on a pipe is highly conditional on timing, system
load, OS behavior, etc. This makes it not suitable for tests.
We introduce "ereadline," "read," and "eread" for performing
deterministic I/O operations (at least on blocking file descriptors).
We stop short of converting existing consumers of "readavailable"
in tests because we're working out race conditions and deadlocks
on Windows. But the goal is to eventually move tests away from
"readavailable" to these new APIs.
Differential Revision: https://phab.mercurial-scm.org/D2720
#testcases obsstore-off obsstore-on
$ cat << EOF >> $HGRCPATH
> [extensions]
> amend=
> debugdrawdag=$TESTDIR/drawdag.py
> [diff]
> git=1
> EOF
#if obsstore-on
$ cat << EOF >> $HGRCPATH
> [experimental]
> evolution.createmarkers=True
> EOF
#endif
Basic amend
$ hg init repo1
$ cd repo1
$ hg debugdrawdag <<'EOS'
> B
> |
> A
> EOS
$ hg update B -q
$ echo 2 >> B
$ hg amend
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/112478962961-7e959a55-amend.hg (obsstore-off !)
#if obsstore-off
$ hg log -p -G --hidden -T '{rev} {node|short} {desc}\n'
@ 1 be169c7e8dbe B
| diff --git a/B b/B
| new file mode 100644
| --- /dev/null
| +++ b/B
| @@ -0,0 +1,1 @@
| +B2
|
o 0 426bada5c675 A
diff --git a/A b/A
new file mode 100644
--- /dev/null
+++ b/A
@@ -0,0 +1,1 @@
+A
\ No newline at end of file
#else
$ hg log -p -G --hidden -T '{rev} {node|short} {desc}\n'
@ 2 be169c7e8dbe B
| diff --git a/B b/B
| new file mode 100644
| --- /dev/null
| +++ b/B
| @@ -0,0 +1,1 @@
| +B2
|
| x 1 112478962961 B
|/ diff --git a/B b/B
| new file mode 100644
| --- /dev/null
| +++ b/B
| @@ -0,0 +1,1 @@
| +B
| \ No newline at end of file
|
o 0 426bada5c675 A
diff --git a/A b/A
new file mode 100644
--- /dev/null
+++ b/A
@@ -0,0 +1,1 @@
+A
\ No newline at end of file
#endif
Nothing changed
$ hg amend
nothing changed
[1]
$ hg amend -d "0 0"
nothing changed
[1]
$ hg amend -d "Thu Jan 01 00:00:00 1970 UTC"
nothing changed
[1]
Matcher and metadata options
$ echo 3 > C
$ echo 4 > D
$ hg add C D
$ hg amend -m NEWMESSAGE -I C
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/be169c7e8dbe-7684ddc5-amend.hg (obsstore-off !)
$ hg log -r . -T '{node|short} {desc} {files}\n'
c7ba14d9075b NEWMESSAGE B C
$ echo 5 > E
$ rm C
$ hg amend -d '2000 1000' -u 'Foo <foo@example.com>' -A C D
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/c7ba14d9075b-b3e76daa-amend.hg (obsstore-off !)
$ hg log -r . -T '{node|short} {desc} {files} {author} {date}\n'
14f6c4bcc865 NEWMESSAGE B D Foo <foo@example.com> 2000.01000
Amend with editor
$ cat > $TESTTMP/prefix.sh <<'EOF'
> printf 'EDITED: ' > $TESTTMP/msg
> cat "$1" >> $TESTTMP/msg
> mv $TESTTMP/msg "$1"
> EOF
$ chmod +x $TESTTMP/prefix.sh
$ HGEDITOR="sh $TESTTMP/prefix.sh" hg amend --edit
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/14f6c4bcc865-6591f15d-amend.hg (obsstore-off !)
$ hg log -r . -T '{node|short} {desc}\n'
298f085230c3 EDITED: NEWMESSAGE
$ HGEDITOR="sh $TESTTMP/prefix.sh" hg amend -e -m MSG
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/298f085230c3-d81a6ad3-amend.hg (obsstore-off !)
$ hg log -r . -T '{node|short} {desc}\n'
974f07f28537 EDITED: MSG
$ echo FOO > $TESTTMP/msg
$ hg amend -l $TESTTMP/msg -m BAR
abort: options --message and --logfile are mutually exclusive
[255]
$ hg amend -l $TESTTMP/msg
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/974f07f28537-edb6470a-amend.hg (obsstore-off !)
$ hg log -r . -T '{node|short} {desc}\n'
507be9bdac71 FOO
Interactive mode
$ touch F G
$ hg add F G
$ cat <<EOS | hg amend -i --config ui.interactive=1
> y
> n
> EOS
diff --git a/F b/F
new file mode 100644
examine changes to 'F'? [Ynesfdaq?] y
diff --git a/G b/G
new file mode 100644
examine changes to 'G'? [Ynesfdaq?] n
saved backup bundle to $TESTTMP/repo1/.hg/strip-backup/507be9bdac71-c8077452-amend.hg (obsstore-off !)
$ hg log -r . -T '{files}\n'
B D F
Amend in the middle of a stack
$ hg init $TESTTMP/repo2
$ cd $TESTTMP/repo2
$ hg debugdrawdag <<'EOS'
> C
> |
> B
> |
> A
> EOS
$ hg update -q B
$ echo 2 >> B
$ hg amend
abort: cannot amend changeset with children
[255]
#if obsstore-on
With allowunstable, amend could work in the middle of a stack
$ cat >> $HGRCPATH <<EOF
> [experimental]
> evolution.createmarkers=True
> evolution.allowunstable=True
> EOF
$ hg amend
1 new orphan changesets
$ hg log -T '{rev} {node|short} {desc}\n' -G
@ 3 be169c7e8dbe B
|
| * 2 26805aba1e60 C
| |
| x 1 112478962961 B
|/
o 0 426bada5c675 A
Checking the note stored in the obsmarker
$ echo foo > bar
$ hg add bar
$ hg amend --note 'yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy'
abort: cannot store a note of more than 255 bytes
[255]
$ hg amend --note "adding bar"
$ hg debugobsolete -r .
112478962961147124edd43549aedd1a335e44bf be169c7e8dbe21cd10b3d79691cbe7f241e3c21c 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
be169c7e8dbe21cd10b3d79691cbe7f241e3c21c 16084da537dd8f84cfdb3055c633772269d62e1b 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'note': 'adding bar', 'operation': 'amend', 'user': 'test'}
#endif
Cannot amend public changeset
$ hg phase -r A --public
$ hg update -C -q A
$ hg amend -m AMEND
abort: cannot amend public changesets
(see 'hg help phases' for details)
[255]
Amend a merge changeset
$ hg init $TESTTMP/repo3
$ cd $TESTTMP/repo3
$ hg debugdrawdag <<'EOS'
> C
> /|
> A B
> EOS
$ hg update -q C
$ hg amend -m FOO
saved backup bundle to $TESTTMP/repo3/.hg/strip-backup/a35c07e8a2a4-15ff4612-amend.hg (obsstore-off !)
$ rm .hg/localtags
$ hg log -G -T '{desc}\n'
@ FOO
|\
| o B
|
o A
More complete test for status changes (issue5732)
-------------------------------------------------
Generates history of files having 3 states, r0_r1_wc:
r0: ground (content/missing)
r1: old state to be amended (content/missing, where missing means removed)
wc: changes to be included in r1 (content/missing-tracked/untracked)
$ hg init $TESTTMP/wcstates
$ cd $TESTTMP/wcstates
$ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 1
$ hg addremove -q --similarity 0
$ hg commit -m0
$ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 2
$ hg addremove -q --similarity 0
$ hg commit -m1
$ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 wc
$ hg addremove -q --similarity 0
$ hg forget *_*_*-untracked
$ rm *_*_missing-*
amend r1 to include wc changes
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
clean/modified/removed/added states of the amended revision
$ hg status --all --change . 'glob:content1_*_content1-tracked'
C content1_content1_content1-tracked
C content1_content2_content1-tracked
C content1_missing_content1-tracked
$ hg status --all --change . 'glob:content1_*_content[23]-tracked'
M content1_content1_content3-tracked
M content1_content2_content2-tracked
M content1_content2_content3-tracked
M content1_missing_content3-tracked
$ hg status --all --change . 'glob:content1_*_missing-tracked'
M content1_content2_missing-tracked
R content1_missing_missing-tracked
C content1_content1_missing-tracked
$ hg status --all --change . 'glob:content1_*_*-untracked'
R content1_content1_content1-untracked
R content1_content1_content3-untracked
R content1_content1_missing-untracked
R content1_content2_content1-untracked
R content1_content2_content2-untracked
R content1_content2_content3-untracked
R content1_content2_missing-untracked
R content1_missing_content1-untracked
R content1_missing_content3-untracked
R content1_missing_missing-untracked
$ hg status --all --change . 'glob:missing_content2_*'
A missing_content2_content2-tracked
A missing_content2_content3-tracked
A missing_content2_missing-tracked
$ hg status --all --change . 'glob:missing_missing_*'
A missing_missing_content3-tracked
working directory should be all clean (with some missing/untracked files)
$ hg status --all 'glob:*_content?-tracked'
C content1_content1_content1-tracked
C content1_content1_content3-tracked
C content1_content2_content1-tracked
C content1_content2_content2-tracked
C content1_content2_content3-tracked
C content1_missing_content1-tracked
C content1_missing_content3-tracked
C missing_content2_content2-tracked
C missing_content2_content3-tracked
C missing_missing_content3-tracked
$ hg status --all 'glob:*_missing-tracked'
! content1_content1_missing-tracked
! content1_content2_missing-tracked
! content1_missing_missing-tracked
! missing_content2_missing-tracked
! missing_missing_missing-tracked
$ hg status --all 'glob:*-untracked'
? content1_content1_content1-untracked
? content1_content1_content3-untracked
? content1_content2_content1-untracked
? content1_content2_content2-untracked
? content1_content2_content3-untracked
? content1_missing_content1-untracked
? content1_missing_content3-untracked
? missing_content2_content2-untracked
? missing_content2_content3-untracked
? missing_missing_content3-untracked