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view tests/test-convert-bzr.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 | 75be14993fda |
children | 7a88643bc0ef |
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#require bzr $ . "$TESTDIR/bzr-definitions" create and rename on the same file in the same step $ mkdir test-createandrename $ cd test-createandrename $ bzr init -q source test empty repo conversion (issue3233) $ hg convert source source-hg initializing destination source-hg repository scanning source... sorting... converting... back to the rename stuff $ cd source $ echo a > a $ echo c > c $ echo e > e $ bzr add -q a c e $ bzr commit -q -m 'Initial add: a, c, e' $ bzr mv a b a => b $ bzr mv c d c => d $ bzr mv e f e => f $ echo a2 >> a $ mkdir e $ bzr add -q a e $ bzr commit -q -m 'rename a into b, create a, rename c into d' $ cd .. $ hg convert source source-hg scanning source... sorting... converting... 1 Initial add: a, c, e 0 rename a into b, create a, rename c into d $ glog -R source-hg o 1@source "rename a into b, create a, rename c into d" files: a b c d e f | o 0@source "Initial add: a, c, e" files: a c e manifest $ hg manifest -R source-hg -r tip a b d f test --rev option $ hg convert -r 1 source source-1-hg initializing destination source-1-hg repository scanning source... sorting... converting... 0 Initial add: a, c, e $ glog -R source-1-hg o 0@source "Initial add: a, c, e" files: a c e test with filemap $ cat > filemap <<EOF > exclude a > EOF $ hg convert --filemap filemap source source-filemap-hg initializing destination source-filemap-hg repository scanning source... sorting... converting... 1 Initial add: a, c, e 0 rename a into b, create a, rename c into d $ hg -R source-filemap-hg manifest -r tip b d f convert from lightweight checkout $ bzr checkout --lightweight source source-light $ hg convert -s bzr source-light source-light-hg initializing destination source-light-hg repository warning: lightweight checkouts may cause conversion failures, try with a regular branch instead. $TESTTMP/test-createandrename/source-light does not look like a Bazaar repository abort: source-light: missing or unsupported repository [255] extract timestamps that look just like hg's {date|isodate}: yyyy-mm-dd HH:MM zzzz (no seconds!) compare timestamps $ cd source $ bzr log | \ > sed '/timestamp/!d;s/.\{15\}\([0-9: -]\{16\}\):.. \(.[0-9]\{4\}\)/\1 \2/' \ > > ../bzr-timestamps $ cd .. $ hg -R source-hg log --template "{date|isodate}\n" > hg-timestamps $ cmp bzr-timestamps hg-timestamps || diff -u bzr-timestamps hg-timestamps $ cd .. merge $ mkdir test-merge $ cd test-merge $ cat > helper.py <<EOF > import sys > from bzrlib import workingtree > wt = workingtree.WorkingTree.open('.') > > message, stamp = sys.argv[1:] > wt.commit(message, timestamp=int(stamp)) > EOF $ bzr init -q source $ cd source $ echo content > a $ echo content2 > b $ bzr add -q a b $ bzr commit -q -m 'Initial add' $ cd .. $ bzr branch -q source source-improve $ cd source $ echo more >> a $ $PYTHON ../helper.py 'Editing a' 100 $ cd ../source-improve $ echo content3 >> b $ $PYTHON ../helper.py 'Editing b' 200 $ cd ../source $ bzr merge -q ../source-improve $ bzr commit -q -m 'Merged improve branch' $ cd .. $ hg convert --datesort source source-hg initializing destination source-hg repository scanning source... sorting... converting... 3 Initial add 2 Editing a 1 Editing b 0 Merged improve branch $ glog -R source-hg o 3@source "Merged improve branch" files: |\ | o 2@source-improve "Editing b" files: b | | o | 1@source "Editing a" files: a |/ o 0@source "Initial add" files: a b $ cd .. #if symlink execbit symlinks and executable files $ mkdir test-symlinks $ cd test-symlinks $ bzr init -q source $ cd source $ touch program $ chmod +x program $ ln -s program altname $ mkdir d $ echo a > d/a $ ln -s a syma $ bzr add -q altname program syma d/a $ bzr commit -q -m 'Initial setup' $ touch newprog $ chmod +x newprog $ rm altname $ ln -s newprog altname $ chmod -x program $ bzr add -q newprog $ bzr commit -q -m 'Symlink changed, x bits changed' $ cd .. $ hg convert source source-hg initializing destination source-hg repository scanning source... sorting... converting... 1 Initial setup 0 Symlink changed, x bits changed $ manifest source-hg 0 % manifest of 0 644 @ altname 644 d/a 755 * program 644 @ syma $ manifest source-hg tip % manifest of tip 644 @ altname 644 d/a 755 * newprog 644 program 644 @ syma test the symlinks can be recreated $ cd source-hg $ hg up 5 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg cat syma; echo a $ cd ../.. #endif Multiple branches $ bzr init-repo -q --no-trees repo $ bzr init -q repo/trunk $ bzr co repo/trunk repo-trunk $ cd repo-trunk $ echo a > a $ bzr add -q a $ bzr ci -qm adda $ bzr tag trunk-tag Created tag trunk-tag. $ bzr switch -b branch Tree is up to date at revision 1. Switched to branch: *repo/branch/ (glob) $ sleep 1 $ echo b > b $ bzr add -q b $ bzr ci -qm addb $ bzr tag branch-tag Created tag branch-tag. $ bzr switch --force ../repo/trunk Updated to revision 1. Switched to branch: */repo/trunk/ (glob) $ sleep 1 $ echo a >> a $ bzr ci -qm changea $ cd .. $ hg convert --datesort repo repo-bzr initializing destination repo-bzr repository scanning source... sorting... converting... 2 adda 1 addb 0 changea updating tags $ (cd repo-bzr; glog) o 3@default "update tags" files: .hgtags | o 2@default "changea" files: a | | o 1@branch "addb" files: b |/ o 0@default "adda" files: a Test tags (converted identifiers are not stable because bzr ones are not and get incorporated in extra fields). $ hg -R repo-bzr tags tip 3:* (glob) branch-tag 1:* (glob) trunk-tag 0:* (glob) Nested repositories (issue3254) $ bzr init-repo -q --no-trees repo/inner $ bzr init -q repo/inner/trunk $ bzr co repo/inner/trunk inner-trunk $ cd inner-trunk $ echo b > b $ bzr add -q b $ bzr ci -qm addb $ cd .. $ hg convert --datesort repo noinner-bzr initializing destination noinner-bzr repository scanning source... sorting... converting... 2 adda 1 addb 0 changea updating tags