Mercurial > hg
view tests/test-copy.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 | c2380b448265 |
children | 886207fb18ab |
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# enable bundle2 in advance $ cat << EOF >> $HGRCPATH > [format] > usegeneraldelta=yes > EOF $ mkdir part1 $ cd part1 $ hg init $ echo a > a $ hg add a $ hg commit -m "1" $ hg status $ hg copy a b $ hg --config ui.portablefilenames=abort copy a con.xml abort: filename contains 'con', which is reserved on Windows: 'con.xml' [255] $ hg status A b $ hg sum parent: 0:c19d34741b0a tip 1 branch: default commit: 1 copied update: (current) phases: 1 draft $ hg --debug commit -m "2" committing files: b b: copy a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 committing manifest committing changelog updating the branch cache committed changeset 1:93580a2c28a50a56f63526fb305067e6fbf739c4 we should see two history entries $ hg history -v changeset: 1:93580a2c28a5 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 files: b description: 2 changeset: 0:c19d34741b0a user: test date: Thu Jan 01 00:00:00 1970 +0000 files: a description: 1 we should see one log entry for a $ hg log a changeset: 0:c19d34741b0a user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 1 this should show a revision linked to changeset 0 $ hg debugindex a rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 3 ..... 0 b789fdd96dc2 000000000000 000000000000 (re) we should see one log entry for b $ hg log b changeset: 1:93580a2c28a5 tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: 2 this should show a revision linked to changeset 1 $ hg debugindex b rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 65 ..... 1 37d9b5d994ea 000000000000 000000000000 (re) this should show the rename information in the metadata $ hg debugdata b 0 | head -3 | tail -2 copy: a copyrev: b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 $ md5sum.py .hg/store/data/b.i 44913824c8f5890ae218f9829535922e .hg/store/data/b.i $ hg cat b > bsum $ md5sum.py bsum 60b725f10c9c85c70d97880dfe8191b3 bsum $ hg cat a > asum $ md5sum.py asum 60b725f10c9c85c70d97880dfe8191b3 asum $ hg verify checking changesets checking manifests crosschecking files in changesets and manifests checking files 2 files, 2 changesets, 2 total revisions $ cd .. $ mkdir part2 $ cd part2 $ hg init $ echo foo > foo should fail - foo is not managed $ hg mv foo bar foo: not copying - file is not managed abort: no files to copy [255] $ hg st -A ? foo $ hg add foo dry-run; print a warning that this is not a real copy; foo is added $ hg mv --dry-run foo bar foo has not been committed yet, so no copy data will be stored for bar. $ hg st -A A foo should print a warning that this is not a real copy; bar is added $ hg mv foo bar foo has not been committed yet, so no copy data will be stored for bar. $ hg st -A A bar should print a warning that this is not a real copy; foo is added $ hg cp bar foo bar has not been committed yet, so no copy data will be stored for foo. $ hg rm -f bar $ rm bar $ hg st -A A foo $ hg commit -m1 moving a missing file $ rm foo $ hg mv foo foo3 foo: deleted in working directory foo3 does not exist! $ hg up -qC . copy --after to a nonexistent target filename $ hg cp -A foo dummy foo: not recording copy - dummy does not exist dry-run; should show that foo is clean $ hg copy --dry-run foo bar $ hg st -A C foo should show copy $ hg copy foo bar $ hg st -C A bar foo shouldn't show copy $ hg commit -m2 $ hg st -C should match $ hg debugindex foo rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 5 ..... 0 2ed2a3912a0b 000000000000 000000000000 (re) $ hg debugrename bar bar renamed from foo:2ed2a3912a0b24502043eae84ee4b279c18b90dd $ echo bleah > foo $ echo quux > bar $ hg commit -m3 should not be renamed $ hg debugrename bar bar not renamed $ hg copy -f foo bar should show copy $ hg st -C M bar foo XXX: filtering lfilesrepo.status() in 3.3-rc causes the copy source to not be displayed. $ hg st -C --config extensions.largefiles= M bar foo $ hg commit -m3 should show no parents for tip $ hg debugindex bar rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 69 ..... 1 7711d36246cc 000000000000 000000000000 (re) 1 69 6 ..... 2 bdf70a2b8d03 7711d36246cc 000000000000 (re) 2 75 71 ..... 3 b2558327ea8d 000000000000 000000000000 (re) should match $ hg debugindex foo rev offset length ..... linkrev nodeid p1 p2 (re) 0 0 5 ..... 0 2ed2a3912a0b 000000000000 000000000000 (re) 1 5 7 ..... 2 dd12c926cf16 2ed2a3912a0b 000000000000 (re) $ hg debugrename bar bar renamed from foo:dd12c926cf165e3eb4cf87b084955cb617221c17 should show no copies $ hg st -C copy --after on an added file $ cp bar baz $ hg add baz $ hg cp -A bar baz $ hg st -C A baz bar foo was clean: $ hg st -AC foo C foo Trying to copy on top of an existing file fails, $ hg copy -A bar foo foo: not overwriting - file already committed (hg copy --after --force to replace the file by recording a copy) same error without the --after, so the user doesn't have to go through two hints: $ hg copy bar foo foo: not overwriting - file already committed (hg copy --force to replace the file by recording a copy) but it's considered modified after a copy --after --force $ hg copy -Af bar foo $ hg st -AC foo M foo bar The hint for a file that exists but is not in file history doesn't mention --force: $ touch xyzzy $ hg cp bar xyzzy xyzzy: not overwriting - file exists (hg copy --after to record the copy) $ cd ..