Mercurial > hg
view tests/test-rebase-collapse.t @ 33289:abd7dedbaa36
sparse: vendor Facebook-developed extension
Facebook has developed an extension to enable "sparse" checkouts -
a working directory with a subset of files. This feature is a critical
component in enabling repositories to scale to infinite number of
files while retaining reasonable performance. It's worth noting
that sparse checkout is only one possible solution to this problem:
another is virtual filesystems that realize files on first access.
But given that virtual filesystems may not be accessible to all
users, sparse checkout is necessary as a fallback.
Per mailing list discussion at
https://www.mercurial-scm.org/pipermail/mercurial-devel/2017-March/095868.html
we want to add sparse checkout to the Mercurial distribution via
roughly the following mechanism:
1. Vendor extension as-is with minimal modifications (this patch)
2. Refactor extension so it is more clearly experimental and inline
with Mercurial practices
3. Move code from extension into core where possible
4. Drop experimental labeling and/or move feature into core
after sign-off from narrow clone feature owners
This commit essentially copies the sparse extension and tests
from revision 71e0a2aeca92a4078fe1b8c76e32c88ff1929737 of the
https://bitbucket.org/facebook/hg-experimental repository.
A list of modifications made as part of vendoring is as follows:
* "EXPERIMENTAL" added to module docstring
* Imports were changed to match Mercurial style conventions
* "testedwith" value was updated to core Mercurial special value and
comment boilerplate was inserted
* A "clone_sparse" function was renamed to "clonesparse" to appease
the style checker
* Paths to the sparse extension in tests reflect built-in location
* test-sparse-extensions.t was renamed to test-sparse-fsmonitor.t
and references to "simplecache" were removed. The test always skips
because it isn't trivial to run it given the way we currently run
fsmonitor tests
* A double empty line was removed from test-sparse-profiles.t
There are aspects of the added code that are obviously not ideal.
The goal is to make a minimal number of modifications as part of
the vendoring to make it easier to track changes from the original
implementation. Refactoring will occur in subsequent patches.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 01 Jul 2017 10:43:29 -0700 |
parents | b63351f6a246 |
children | 3b7cb3d17137 |
line wrap: on
line source
$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > mq= > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: '{desc}' {branches}\n" > tglogp = log -G --template "{rev}:{phase} '{desc}' {branches}\n" > EOF Create repo a: $ hg init a $ cd a $ hg unbundle "$TESTDIR/bundles/rebase.hg" adding changesets adding manifests adding file changes added 8 changesets with 7 changes to 7 files (+2 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg up tip 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg tglog @ 7: 'H' | | o 6: 'G' |/| o | 5: 'F' | | | o 4: 'E' |/ | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ cd .. Rebasing B onto H and collapsing changesets with different phases: $ hg clone -q -u 3 a a1 $ cd a1 $ hg phase --force --secret 3 $ cat > $TESTTMP/editor.sh <<EOF > echo "==== before editing" > cat \$1 > echo "====" > echo "edited manually" >> \$1 > EOF $ HGEDITOR="sh $TESTTMP/editor.sh" hg rebase --collapse --keepbranches -e --dest 7 rebasing 1:42ccdea3bb16 "B" rebasing 2:5fddd98957c8 "C" rebasing 3:32af7686d403 "D" ==== before editing Collapsed revision * B * C * D HG: Enter commit message. Lines beginning with 'HG:' are removed. HG: Leave message empty to abort commit. HG: -- HG: user: Nicolas Dumazet <nicdumz.commits@gmail.com> HG: branch 'default' HG: added B HG: added C HG: added D ==== saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-backup.hg (glob) $ hg tglogp @ 5:secret 'Collapsed revision | * B | * C | * D | | | edited manually' o 4:draft 'H' | | o 3:draft 'G' |/| o | 2:draft 'F' | | | o 1:draft 'E' |/ o 0:draft 'A' $ hg manifest --rev tip A B C D F H $ cd .. Rebasing E onto H: $ hg clone -q -u . a a2 $ cd a2 $ hg phase --force --secret 6 $ hg rebase --source 4 --collapse --dest 7 rebasing 4:9520eea781bc "E" rebasing 6:eea13746799a "G" saved backup bundle to $TESTTMP/a2/.hg/strip-backup/9520eea781bc-fcd8edd4-backup.hg (glob) $ hg tglog o 6: 'Collapsed revision | * E | * G' @ 5: 'H' | o 4: 'F' | | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg manifest --rev tip A E F H $ cd .. Rebasing G onto H with custom message: $ hg clone -q -u . a a3 $ cd a3 $ hg rebase --base 6 -m 'custom message' abort: message can only be specified with collapse [255] $ cat > $TESTTMP/checkeditform.sh <<EOF > env | grep HGEDITFORM > true > EOF $ HGEDITOR="sh $TESTTMP/checkeditform.sh" hg rebase --source 4 --collapse -m 'custom message' -e --dest 7 rebasing 4:9520eea781bc "E" rebasing 6:eea13746799a "G" HGEDITFORM=rebase.collapse saved backup bundle to $TESTTMP/a3/.hg/strip-backup/9520eea781bc-fcd8edd4-backup.hg (glob) $ hg tglog o 6: 'custom message' | @ 5: 'H' | o 4: 'F' | | o 3: 'D' | | | o 2: 'C' | | | o 1: 'B' |/ o 0: 'A' $ hg manifest --rev tip A E F H $ cd .. Create repo b: $ hg init b $ cd b $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ hg up -q 0 $ echo C > C $ hg ci -Am C adding C created new head $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo D > D $ hg ci -Am D adding D $ hg up -q 1 $ echo E > E $ hg ci -Am E adding E created new head $ echo F > F $ hg ci -Am F adding F $ hg merge 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m G $ hg up -q 0 $ echo H > H $ hg ci -Am H adding H created new head $ hg tglog @ 7: 'H' | | o 6: 'G' | |\ | | o 5: 'F' | | | | | o 4: 'E' | | | | o | 3: 'D' | |\| | o | 2: 'C' |/ / | o 1: 'B' |/ o 0: 'A' $ cd .. Rebase and collapse - more than one external (fail): $ hg clone -q -u . b b1 $ cd b1 $ hg rebase -s 2 --dest 7 --collapse abort: unable to collapse on top of 7, there is more than one external parent: 1, 5 [255] Rebase and collapse - E onto H: $ hg rebase -s 4 --dest 7 --collapse # root (4) is not a merge rebasing 4:8a5212ebc852 "E" rebasing 5:7f219660301f "F" rebasing 6:c772a8b2dc17 "G" saved backup bundle to $TESTTMP/b1/.hg/strip-backup/8a5212ebc852-75046b61-backup.hg (glob) $ hg tglog o 5: 'Collapsed revision |\ * E | | * F | | * G' | @ 4: 'H' | | o | 3: 'D' |\ \ | o | 2: 'C' | |/ o / 1: 'B' |/ o 0: 'A' $ hg manifest --rev tip A C D E F H $ cd .. Test that branchheads cache is updated correctly when doing a strip in which the parent of the ancestor node to be stripped does not become a head and also, the parent of a node that is a child of the node stripped becomes a head (node 3). The code is now much simpler and we could just test a simpler scenario We keep it the test this way in case new complexity is injected. $ hg clone -q -u . b b2 $ cd b2 $ hg heads --template="{rev}:{node} {branch}\n" 7:c65502d4178782309ce0574c5ae6ee9485a9bafa default 6:c772a8b2dc17629cec88a19d09c926c4814b12c7 default $ cat $TESTTMP/b2/.hg/cache/branch2-served c65502d4178782309ce0574c5ae6ee9485a9bafa 7 c772a8b2dc17629cec88a19d09c926c4814b12c7 o default c65502d4178782309ce0574c5ae6ee9485a9bafa o default $ hg strip 4 saved backup bundle to $TESTTMP/b2/.hg/strip-backup/8a5212ebc852-75046b61-backup.hg (glob) $ cat $TESTTMP/b2/.hg/cache/branch2-served c65502d4178782309ce0574c5ae6ee9485a9bafa 4 2870ad076e541e714f3c2bc32826b5c6a6e5b040 o default c65502d4178782309ce0574c5ae6ee9485a9bafa o default $ hg heads --template="{rev}:{node} {branch}\n" 4:c65502d4178782309ce0574c5ae6ee9485a9bafa default 3:2870ad076e541e714f3c2bc32826b5c6a6e5b040 default $ cd .. Create repo c: $ hg init c $ cd c $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ hg up -q 0 $ echo C > C $ hg ci -Am C adding C created new head $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo D > D $ hg ci -Am D adding D $ hg up -q 1 $ echo E > E $ hg ci -Am E adding E created new head $ echo F > E $ hg ci -m 'F' $ echo G > G $ hg ci -Am G adding G $ hg merge 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m H $ hg up -q 0 $ echo I > I $ hg ci -Am I adding I created new head $ hg tglog @ 8: 'I' | | o 7: 'H' | |\ | | o 6: 'G' | | | | | o 5: 'F' | | | | | o 4: 'E' | | | | o | 3: 'D' | |\| | o | 2: 'C' |/ / | o 1: 'B' |/ o 0: 'A' $ cd .. Rebase and collapse - E onto I: $ hg clone -q -u . c c1 $ cd c1 $ hg rebase -s 4 --dest 8 --collapse # root (4) is not a merge rebasing 4:8a5212ebc852 "E" rebasing 5:dca5924bb570 "F" merging E rebasing 6:55a44ad28289 "G" rebasing 7:417d3b648079 "H" saved backup bundle to $TESTTMP/c1/.hg/strip-backup/8a5212ebc852-f95d0879-backup.hg (glob) $ hg tglog o 5: 'Collapsed revision |\ * E | | * F | | * G | | * H' | @ 4: 'I' | | o | 3: 'D' |\ \ | o | 2: 'C' | |/ o / 1: 'B' |/ o 0: 'A' $ hg manifest --rev tip A C D E G I $ hg up tip -q $ cat E F $ cd .. Create repo d: $ hg init d $ cd d $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ echo C > C $ hg ci -Am C adding C $ hg up -q 1 $ echo D > D $ hg ci -Am D adding D created new head $ hg merge 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m E $ hg up -q 0 $ echo F > F $ hg ci -Am F adding F created new head $ hg tglog @ 5: 'F' | | o 4: 'E' | |\ | | o 3: 'D' | | | | o | 2: 'C' | |/ | o 1: 'B' |/ o 0: 'A' $ cd .. Rebase and collapse - B onto F: $ hg clone -q -u . d d1 $ cd d1 $ hg rebase -s 1 --collapse --dest 5 rebasing 1:27547f69f254 "B" rebasing 2:f838bfaca5c7 "C" rebasing 3:7bbcd6078bcc "D" rebasing 4:0a42590ed746 "E" saved backup bundle to $TESTTMP/d1/.hg/strip-backup/27547f69f254-9a3f7d92-backup.hg (glob) $ hg tglog o 2: 'Collapsed revision | * B | * C | * D | * E' @ 1: 'F' | o 0: 'A' $ hg manifest --rev tip A B C D F Interactions between collapse and keepbranches $ cd .. $ hg init e $ cd e $ echo 'a' > a $ hg ci -Am 'A' adding a $ hg branch 'one' marked working directory as branch one (branches are permanent and global, did you want a bookmark?) $ echo 'b' > b $ hg ci -Am 'B' adding b $ hg branch 'two' marked working directory as branch two $ echo 'c' > c $ hg ci -Am 'C' adding c $ hg up -q 0 $ echo 'd' > d $ hg ci -Am 'D' adding d $ hg tglog @ 3: 'D' | | o 2: 'C' two | | | o 1: 'B' one |/ o 0: 'A' $ hg rebase --keepbranches --collapse -s 1 -d 3 abort: cannot collapse multiple named branches [255] $ repeatchange() { > hg checkout $1 > hg cp d z > echo blah >> z > hg commit -Am "$2" --user "$3" > } $ repeatchange 3 "E" "user1" 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ repeatchange 3 "E" "user2" 0 files updated, 0 files merged, 1 files removed, 0 files unresolved created new head $ hg tglog @ 5: 'E' | | o 4: 'E' |/ o 3: 'D' | | o 2: 'C' two | | | o 1: 'B' one |/ o 0: 'A' $ hg rebase -s 5 -d 4 rebasing 5:fbfb97b1089a "E" (tip) note: rebase of 5:fbfb97b1089a created no changes to commit saved backup bundle to $TESTTMP/e/.hg/strip-backup/fbfb97b1089a-553e1d85-backup.hg (glob) $ hg tglog @ 4: 'E' | o 3: 'D' | | o 2: 'C' two | | | o 1: 'B' one |/ o 0: 'A' $ hg export tip # HG changeset patch # User user1 # Date 0 0 # Thu Jan 01 00:00:00 1970 +0000 # Node ID f338eb3c2c7cc5b5915676a2376ba7ac558c5213 # Parent 41acb9dca9eb976e84cd21fcb756b4afa5a35c09 E diff -r 41acb9dca9eb -r f338eb3c2c7c z --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/z Thu Jan 01 00:00:00 1970 +0000 @@ -0,0 +1,2 @@ +d +blah $ cd .. Rebase, collapse and copies $ hg init copies $ cd copies $ hg unbundle "$TESTDIR/bundles/renames.hg" adding changesets adding manifests adding file changes added 4 changesets with 11 changes to 7 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg up -q tip $ hg tglog @ 3: 'move2' | o 2: 'move1' | | o 1: 'change' |/ o 0: 'add' $ hg rebase --collapse -d 1 rebasing 2:6e7340ee38c0 "move1" merging a and d to d merging b and e to e merging c and f to f rebasing 3:338e84e2e558 "move2" (tip) merging f and c to c merging e and g to g saved backup bundle to $TESTTMP/copies/.hg/strip-backup/6e7340ee38c0-ef8ef003-backup.hg (glob) $ hg st $ hg st --copies --change tip A d a A g b R b $ hg up tip -q $ cat c c c $ cat d a a $ cat g b b $ hg log -r . --template "{file_copies}\n" d (a)g (b) Test collapsing a middle revision in-place $ hg tglog @ 2: 'Collapsed revision | * move1 | * move2' o 1: 'change' | o 0: 'add' $ hg rebase --collapse -r 1 -d 0 abort: can't remove original changesets with unrebased descendants (use --keep to keep original changesets) [255] Test collapsing in place $ hg rebase --collapse -b . -d 0 rebasing 1:1352765a01d4 "change" rebasing 2:64b456429f67 "Collapsed revision" (tip) saved backup bundle to $TESTTMP/copies/.hg/strip-backup/1352765a01d4-45a352ea-backup.hg (glob) $ hg st --change tip --copies M a M c A d a A g b R b $ hg up tip -q $ cat a a a $ cat c c c $ cat d a a $ cat g b b $ cd .. Test stripping a revision with another child $ hg init f $ cd f $ echo A > A $ hg ci -Am A adding A $ echo B > B $ hg ci -Am B adding B $ hg up -q 0 $ echo C > C $ hg ci -Am C adding C created new head $ hg tglog @ 2: 'C' | | o 1: 'B' |/ o 0: 'A' $ hg heads --template="{rev}:{node} {branch}: {desc}\n" 2:c5cefa58fd557f84b72b87f970135984337acbc5 default: C 1:27547f69f25460a52fff66ad004e58da7ad3fb56 default: B $ hg strip 2 0 files updated, 0 files merged, 1 files removed, 0 files unresolved saved backup bundle to $TESTTMP/f/.hg/strip-backup/c5cefa58fd55-629429f4-backup.hg (glob) $ hg tglog o 1: 'B' | @ 0: 'A' $ hg heads --template="{rev}:{node} {branch}: {desc}\n" 1:27547f69f25460a52fff66ad004e58da7ad3fb56 default: B $ cd .. Test collapsing changes that add then remove a file $ hg init collapseaddremove $ cd collapseaddremove $ touch base $ hg commit -Am base adding base $ touch a $ hg commit -Am a adding a $ hg rm a $ touch b $ hg commit -Am b adding b $ hg book foo $ hg rebase -d 0 -r "1::2" --collapse -m collapsed rebasing 1:6d8d9f24eec3 "a" rebasing 2:1cc73eca5ecc "b" (tip foo) saved backup bundle to $TESTTMP/collapseaddremove/.hg/strip-backup/6d8d9f24eec3-77d3b6e2-backup.hg (glob) $ hg log -G --template "{rev}: '{desc}' {bookmarks}" @ 1: 'collapsed' foo | o 0: 'base' $ hg manifest --rev tip b base $ cd .. Test that rebase --collapse will remember message after running into merge conflict and invoking rebase --continue. $ hg init collapse_remember_message $ cd collapse_remember_message $ touch a $ hg add a $ hg commit -m "a" $ echo "a-default" > a $ hg commit -m "a-default" $ hg update -r 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg branch dev marked working directory as branch dev (branches are permanent and global, did you want a bookmark?) $ echo "a-dev" > a $ hg commit -m "a-dev" $ hg rebase --collapse -m "a-default-dev" -d 1 rebasing 2:b8d8db2b242d "a-dev" (tip) merging a warning: conflicts while merging a! (edit, then use 'hg resolve --mark') unresolved conflicts (see hg resolve, then hg rebase --continue) [1] $ rm a.orig $ hg resolve --mark a (no more unresolved files) continue: hg rebase --continue $ hg rebase --continue rebasing 2:b8d8db2b242d "a-dev" (tip) saved backup bundle to $TESTTMP/collapse_remember_message/.hg/strip-backup/b8d8db2b242d-f474c19a-backup.hg (glob) $ hg log changeset: 2:45ba1d1a8665 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a-default-dev changeset: 1:3c8db56a44bc user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a-default changeset: 0:3903775176ed user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a $ cd ..