rust-revlog: add methods for getting parent revs and entries
Differential Revision: https://phab.mercurial-scm.org/D12442
#testcases filelog compatibility changeset sidedata
$ cat >> $HGRCPATH << EOF
> [extensions]
> rebase=
> [alias]
> l = log -G -T '{rev} {desc}\n{files}\n'
> EOF
#if compatibility
$ cat >> $HGRCPATH << EOF
> [experimental]
> copies.read-from = compatibility
> EOF
#endif
#if changeset
$ cat >> $HGRCPATH << EOF
> [experimental]
> copies.read-from = changeset-only
> copies.write-to = changeset-only
> EOF
#endif
#if sidedata
$ cat >> $HGRCPATH << EOF
> [format]
> exp-use-copies-side-data-changeset = yes
> EOF
#endif
$ REPONUM=0
$ newrepo() {
> cd $TESTTMP
> REPONUM=`expr $REPONUM + 1`
> hg init repo-$REPONUM
> cd repo-$REPONUM
> }
Simple rename case
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg debugp1copies
x -> y
$ hg debugp2copies
$ hg ci -m 'rename x to y'
$ hg l
@ 1 rename x to y
| x y
o 0 add x
x
$ hg debugp1copies -r 1
x -> y
$ hg debugpathcopies 0 1
x -> y
$ hg debugpathcopies 1 0
y -> x
Test filtering copies by path. We do filtering by destination.
$ hg debugpathcopies 0 1 x
$ hg debugpathcopies 1 0 x
y -> x
$ hg debugpathcopies 0 1 y
x -> y
$ hg debugpathcopies 1 0 y
Copies not including commit changes
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg debugpathcopies . .
$ hg debugpathcopies . 'wdir()'
x -> y
$ hg debugpathcopies 'wdir()' .
y -> x
Copy a file onto another file
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg cp -f x y
$ hg debugp1copies
x -> y
$ hg debugp2copies
$ hg ci -m 'copy x onto y'
$ hg l
@ 1 copy x onto y
| y
o 0 add x and y
x y
$ hg debugp1copies -r 1
x -> y
$ hg debugpathcopies 0 1
x -> y (no-filelog !)
$ hg debugpathcopies 0 1 --config devel.copy-tracing.trace-all-files=yes
x -> y
Copy a file onto another file with same content. If metadata is stored in changeset, this does not
produce a new filelog entry. The changeset's "files" entry should still list the file.
$ newrepo
$ echo x > x
$ echo x > x2
$ hg ci -Aqm 'add x and x2 with same content'
$ hg cp -f x x2
$ hg ci -m 'copy x onto x2'
$ hg l
@ 1 copy x onto x2
| x2
o 0 add x and x2 with same content
x x2
$ hg debugp1copies -r 1
x -> x2
$ hg debugpathcopies 0 1
x -> x2 (no-filelog !)
$ hg debugpathcopies 0 1 --config devel.copy-tracing.trace-all-files=yes
x -> x2
Rename file in a loop: x->y->z->x
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg debugp1copies
x -> y
$ hg debugp2copies
$ hg ci -m 'rename x to y'
$ hg mv y z
$ hg ci -m 'rename y to z'
$ hg mv z x
$ hg ci -m 'rename z to x'
$ hg l
@ 3 rename z to x
| x z
o 2 rename y to z
| y z
o 1 rename x to y
| x y
o 0 add x
x
$ hg debugpathcopies 0 3
Copy x to z, then remove z, then copy x2 (same content as x) to z. With copy metadata in the
changeset, the two copies here will have the same filelog entry, so ctx['z'].introrev() might point
to the first commit that added the file. We should still report the copy as being from x2.
$ newrepo
$ echo x > x
$ echo x > x2
$ hg ci -Aqm 'add x and x2 with same content'
$ hg cp x z
$ hg ci -qm 'copy x to z'
$ hg rm z
$ hg ci -m 'remove z'
$ hg cp x2 z
$ hg ci -m 'copy x2 to z'
$ hg l
@ 3 copy x2 to z
| z
o 2 remove z
| z
o 1 copy x to z
| z
o 0 add x and x2 with same content
x x2
$ hg debugp1copies -r 3
x2 -> z
$ hg debugpathcopies 0 3
x2 -> z
Create x and y, then rename them both to the same name, but on different sides of a fork
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg mv x z
$ hg ci -qm 'rename x to z'
$ hg co -q 0
$ hg mv y z
$ hg ci -qm 'rename y to z'
$ hg l
@ 2 rename y to z
| y z
| o 1 rename x to z
|/ x z
o 0 add x and y
x y
$ hg debugpathcopies 1 2
z -> x
y -> z
Fork renames x to y on one side and removes x on the other
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg co -q 0
$ hg rm x
$ hg ci -m 'remove x'
created new head
$ hg l
@ 2 remove x
| x
| o 1 rename x to y
|/ x y
o 0 add x
x
$ hg debugpathcopies 1 2
Merge rename from other branch
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg mv x y
$ hg ci -m 'rename x to y'
$ hg co -q 0
$ echo z > z
$ hg ci -Aqm 'add z'
$ hg merge -q 1
$ hg debugp1copies
$ hg debugp2copies
$ hg ci -m 'merge rename from p2'
$ hg l
@ 3 merge rename from p2
|\
| o 2 add z
| | z
o | 1 rename x to y
|/ x y
o 0 add x
x
Perhaps we should indicate the rename here, but `hg status` is documented to be weird during
merges, so...
$ hg debugp1copies -r 3
$ hg debugp2copies -r 3
$ hg debugpathcopies 0 3
x -> y
$ hg debugpathcopies 1 2
y -> x
$ hg debugpathcopies 1 3
$ hg debugpathcopies 2 3
x -> y
Copy file from either side in a merge
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg co -q null
$ echo y > y
$ hg ci -Aqm 'add y'
$ hg merge -q 0
$ hg cp y z
$ hg debugp1copies
y -> z
$ hg debugp2copies
$ hg ci -m 'copy file from p1 in merge'
$ hg co -q 1
$ hg merge -q 0
$ hg cp x z
$ hg debugp1copies
$ hg debugp2copies
x -> z
$ hg ci -qm 'copy file from p2 in merge'
$ hg l
@ 3 copy file from p2 in merge
|\ z
+---o 2 copy file from p1 in merge
| |/ z
| o 1 add y
| y
o 0 add x
x
$ hg debugp1copies -r 2
y -> z
$ hg debugp2copies -r 2
$ hg debugpathcopies 1 2
y -> z
$ hg debugpathcopies 0 2
$ hg debugp1copies -r 3
$ hg debugp2copies -r 3
x -> z
$ hg debugpathcopies 1 3
$ hg debugpathcopies 0 3
x -> z
Copy file that exists on both sides of the merge, same content on both sides
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x on branch 1'
$ hg co -q null
$ echo x > x
$ hg ci -Aqm 'add x on branch 2'
$ hg merge -q 0
$ hg cp x z
$ hg debugp1copies
x -> z
$ hg debugp2copies
$ hg ci -qm 'merge'
$ hg l
@ 2 merge
|\ z
| o 1 add x on branch 2
| x
o 0 add x on branch 1
x
$ hg debugp1copies -r 2
x -> z
$ hg debugp2copies -r 2
It's a little weird that it shows up on both sides
$ hg debugpathcopies 1 2
x -> z
$ hg debugpathcopies 0 2
x -> z (filelog !)
Copy file that exists on both sides of the merge, different content
$ newrepo
$ echo branch1 > x
$ hg ci -Aqm 'add x on branch 1'
$ hg co -q null
$ echo branch2 > x
$ hg ci -Aqm 'add x on branch 2'
$ hg merge -q 0
warning: conflicts while merging x! (edit, then use 'hg resolve --mark')
[1]
$ echo resolved > x
$ hg resolve -m x
(no more unresolved files)
$ hg cp x z
$ hg debugp1copies
x -> z
$ hg debugp2copies
$ hg ci -qm 'merge'
$ hg l
@ 2 merge
|\ x z
| o 1 add x on branch 2
| x
o 0 add x on branch 1
x
$ hg debugp1copies -r 2
x -> z (changeset !)
x -> z (sidedata !)
$ hg debugp2copies -r 2
x -> z (no-changeset no-sidedata !)
$ hg debugpathcopies 1 2
x -> z (changeset !)
x -> z (sidedata !)
$ hg debugpathcopies 0 2
x -> z (no-changeset no-sidedata !)
Copy x->y on one side of merge and copy x->z on the other side. Pathcopies from one parent
of the merge to the merge should include the copy from the other side.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -qm 'copy x to y'
$ hg co -q 0
$ hg cp x z
$ hg ci -qm 'copy x to z'
$ hg merge -q 1
$ hg ci -m 'merge copy x->y and copy x->z'
$ hg l
@ 3 merge copy x->y and copy x->z
|\
| o 2 copy x to z
| | z
o | 1 copy x to y
|/ y
o 0 add x
x
$ hg debugp1copies -r 3
$ hg debugp2copies -r 3
$ hg debugpathcopies 2 3
x -> y
$ hg debugpathcopies 1 3
x -> z
Copy x->y on two separate branches. Pathcopies from one branch to the other
should not report the copy.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -qm 'copy x to y'
$ hg co -q 0
$ hg graft 1 -q
$ hg l
@ 2 copy x to y
| y
| o 1 copy x to y
|/ y
o 0 add x
x
$ hg debugp1copies -r 1
x -> y
$ hg debugp1copies -r 2
x -> y
$ hg debugpathcopies 1 2
$ hg debugpathcopies 2 1
Copy x to y on one side of merge, create y and rename to z on the other side.
$ newrepo
$ echo x > x
$ hg ci -Aqm 'add x'
$ hg cp x y
$ hg ci -qm 'copy x to y'
$ hg co -q 0
$ echo y > y
$ hg ci -Aqm 'add y'
$ hg mv y z
$ hg ci -m 'rename y to z'
$ hg merge -q 1
$ hg ci -m 'merge'
$ hg l
@ 4 merge
|\
| o 3 rename y to z
| | y z
| o 2 add y
| | y
o | 1 copy x to y
|/ y
o 0 add x
x
$ hg debugp1copies -r 3
y -> z
$ hg debugp2copies -r 3
$ hg debugpathcopies 2 3
y -> z
$ hg debugpathcopies 1 3
y -> z (no-filelog !)
Create x and y, then rename x to z on one side of merge, and rename y to z and
modify z on the other side. When storing copies in the changeset, we don't
filter out copies whose target was created on the other side of the merge.
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg mv x z
$ hg ci -qm 'rename x to z'
$ hg co -q 0
$ hg mv y z
$ hg ci -qm 'rename y to z'
$ echo z >> z
$ hg ci -m 'modify z'
$ hg merge -q 1
warning: conflicts while merging z! (edit, then use 'hg resolve --mark')
[1]
$ echo z > z
$ hg resolve -qm z
$ hg ci -m 'merge 1 into 3'
Try merging the other direction too
$ hg co -q 1
$ hg merge -q 3
warning: conflicts while merging z! (edit, then use 'hg resolve --mark')
[1]
$ echo z > z
$ hg resolve -qm z
$ hg ci -m 'merge 3 into 1'
created new head
$ hg l
@ 5 merge 3 into 1
|\ z
+---o 4 merge 1 into 3
| |/ z
| o 3 modify z
| | z
| o 2 rename y to z
| | y z
o | 1 rename x to z
|/ x z
o 0 add x and y
x y
$ hg debugpathcopies 1 4
y -> z (no-filelog !)
$ hg debugpathcopies 2 4
x -> z (no-filelog !)
$ hg debugpathcopies 0 4
x -> z (filelog !)
y -> z (no-filelog !)
$ hg debugpathcopies 1 5
y -> z (no-filelog !)
$ hg debugpathcopies 2 5
x -> z (no-filelog !)
$ hg debugpathcopies 0 5
x -> z
Create x and y, then remove y and rename x to y on one side of merge, and
modify x on the other side. The modification to x from the second side
should be propagated to y.
$ newrepo
$ echo original > x
$ hg add x
$ echo unrelated > y
$ hg add y
$ hg commit -m 'add x and y'
$ hg remove y
$ hg commit -m 'remove y'
$ hg rename x y
$ hg commit -m 'rename x to y'
$ hg checkout -q 0
$ echo modified > x
$ hg commit -m 'modify x'
created new head
$ hg l
@ 3 modify x
| x
| o 2 rename x to y
| | x y
| o 1 remove y
|/ y
o 0 add x and y
x y
#if filelog
$ hg merge 2
file 'x' was deleted in other [merge rev] but was modified in local [working copy].
You can use (c)hanged version, (d)elete, or leave (u)nresolved.
What do you want to do? u
1 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
This should ideally be "modified", but we will probably not be able to fix
that in the filelog case.
$ cat y
original
#else
$ hg merge 2
merging x and y to y
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat y
modified
#endif
Same as above, but in the opposite direction
#if filelog
$ hg co -qC 2
$ hg merge 3
file 'x' was deleted in local [working copy] but was modified in other [merge rev].
You can use (c)hanged version, leave (d)eleted, or leave (u)nresolved.
What do you want to do? u
0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon
[1]
BROKEN: should be "modified"
$ cat y
original
#else
$ hg co -qC 2
$ hg merge 3
merging y and x to y
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ cat y
modified
#endif
Create x and y, then rename x to z on one side of merge, and rename y to z and
then delete z on the other side.
$ newrepo
$ echo x > x
$ echo y > y
$ hg ci -Aqm 'add x and y'
$ hg mv x z
$ hg ci -qm 'rename x to z'
$ hg co -q 0
$ hg mv y z
$ hg ci -qm 'rename y to z'
$ hg rm z
$ hg ci -m 'delete z'
$ hg merge -q 1
$ echo z > z
$ hg ci -m 'merge 1 into 3'
Try merging the other direction too
$ hg co -q 1
$ hg merge -q 3
$ echo z > z
$ hg ci -m 'merge 3 into 1'
created new head
$ hg l
@ 5 merge 3 into 1
|\ z
+---o 4 merge 1 into 3
| |/ z
| o 3 delete z
| | z
| o 2 rename y to z
| | y z
o | 1 rename x to z
|/ x z
o 0 add x and y
x y
$ hg debugpathcopies 1 4
$ hg debugpathcopies 2 4
x -> z (no-filelog !)
$ hg debugpathcopies 0 4
x -> z (no-changeset no-compatibility !)
$ hg debugpathcopies 1 5
$ hg debugpathcopies 2 5
x -> z (no-filelog !)
$ hg debugpathcopies 0 5
x -> z
Test for a case in fullcopytracing algorithm where neither of the merging csets
is a descendant of the merge base. This test reflects that the algorithm
correctly finds the copies:
$ cat >> $HGRCPATH << EOF
> [experimental]
> evolution.createmarkers=True
> evolution.allowunstable=True
> EOF
$ newrepo
$ echo a > a
$ hg add a
$ hg ci -m "added a"
$ echo b > b
$ hg add b
$ hg ci -m "added b"
$ hg mv b b1
$ hg ci -m "rename b to b1"
$ hg up ".^"
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ echo d > d
$ hg add d
$ hg ci -m "added d"
created new head
$ echo baba >> b
$ hg ci --amend -m "added d, modified b"
$ hg l --hidden
@ 4 added d, modified b
| b d
| x 3 added d
|/ d
| o 2 rename b to b1
|/ b b1
o 1 added b
| b
o 0 added a
a
Grafting revision 4 on top of revision 2, showing that it respect the rename:
$ hg up 2 -q
$ hg graft -r 4 --base 3 --hidden
grafting 4:af28412ec03c "added d, modified b" (tip) (no-changeset !)
grafting 4:6325ca0b7a1c "added d, modified b" (tip) (changeset !)
merging b1 and b to b1
$ hg l -l1 -p
@ 5 added d, modified b
| b1
~ diff -r 5a4825cc2926 -r 94a2f1a0e8e2 b1 (no-changeset !)
~ diff -r 0a0ed3b3251c -r d544fb655520 b1 (changeset !)
--- a/b1 Thu Jan 01 00:00:00 1970 +0000
+++ b/b1 Thu Jan 01 00:00:00 1970 +0000
@@ -1,1 +1,2 @@
b
+baba
Test to make sure that fullcopytracing algorithm doesn't fail when neither of the
merging csets is a descendant of the base.
-------------------------------------------------------------------------------------------------
$ newrepo
$ echo a > a
$ hg add a
$ hg ci -m "added a"
$ echo b > b
$ hg add b
$ hg ci -m "added b"
$ echo foobar > willconflict
$ hg add willconflict
$ hg ci -m "added willconflict"
$ echo c > c
$ hg add c
$ hg ci -m "added c"
$ hg l
@ 3 added c
| c
o 2 added willconflict
| willconflict
o 1 added b
| b
o 0 added a
a
$ hg up ".^^"
0 files updated, 0 files merged, 2 files removed, 0 files unresolved
$ echo d > d
$ hg add d
$ hg ci -m "added d"
created new head
$ echo barfoo > willconflict
$ hg add willconflict
$ hg ci --amend -m "added willconflict and d"
$ hg l
@ 5 added willconflict and d
| d willconflict
| o 3 added c
| | c
| o 2 added willconflict
|/ willconflict
o 1 added b
| b
o 0 added a
a
$ hg rebase -r . -d 2 -t :other
rebasing 5:5018b1509e94 tip "added willconflict and d" (no-changeset !)
rebasing 5:af8d273bf580 tip "added willconflict and d" (changeset !)
$ hg up 3 -q
$ hg l --hidden
o 6 added willconflict and d
| d willconflict
| x 5 added willconflict and d
| | d willconflict
| | x 4 added d
| |/ d
+---@ 3 added c
| | c
o | 2 added willconflict
|/ willconflict
o 1 added b
| b
o 0 added a
a
Now if we trigger a merge between revision 3 and 6 using base revision 4,
neither of the merging csets will be a descendant of the base revision:
$ hg graft -r 6 --base 4 --hidden -t :other
grafting 6:99802e4f1e46 "added willconflict and d" (tip) (no-changeset !)
grafting 6:b19f0df72728 "added willconflict and d" (tip) (changeset !)