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view tests/test-rename-dir-merge.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 | ce3a133f71b3 |
children | eb586ed5d8ce |
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$ hg init t $ cd t $ mkdir a $ echo foo > a/a $ echo bar > a/b $ hg ci -Am "0" adding a/a adding a/b $ hg co -C 0 0 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg mv a b moving a/a to b/a (glob) moving a/b to b/b (glob) $ hg ci -m "1 mv a/ b/" $ hg co -C 0 2 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo baz > a/c $ echo quux > a/d $ hg add a/c $ hg ci -m "2 add a/c" created new head $ hg merge --debug 1 searching for copies back to rev 1 unmatched files in local: a/c unmatched files in other: b/a b/b all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'a/a' -> dst: 'b/a' src: 'a/b' -> dst: 'b/b' checking for directory renames discovered dir src: 'a/' -> dst: 'b/' pending file src: 'a/c' -> dst: 'b/c' resolving manifests branchmerge: True, force: False, partial: False ancestor: f9b20c0d4c51, local: ce36d17b18fb+, remote: 397f8b00a740 a/a: other deleted -> r removing a/a a/b: other deleted -> r removing a/b b/a: remote created -> g getting b/a b/b: remote created -> g getting b/b b/c: remote directory rename - move from a/c -> dm moving a/c to b/c (glob) 3 files updated, 0 files merged, 2 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo a/* b/* a/d b/a b/b b/c $ hg st -C M b/a M b/b A b/c a/c R a/a R a/b R a/c ? a/d $ hg ci -m "3 merge 2+1" $ hg debugrename b/c b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88 (glob) $ hg co -C 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg merge --debug 2 searching for copies back to rev 1 unmatched files in local: b/a b/b unmatched files in other: a/c all copies found (* = to merge, ! = divergent, % = renamed and deleted): src: 'a/a' -> dst: 'b/a' src: 'a/b' -> dst: 'b/b' checking for directory renames discovered dir src: 'a/' -> dst: 'b/' pending file src: 'a/c' -> dst: 'b/c' resolving manifests branchmerge: True, force: False, partial: False ancestor: f9b20c0d4c51, local: 397f8b00a740+, remote: ce36d17b18fb starting 4 threads for background file closing (?) b/c: local directory rename - get from a/c -> dg getting a/c to b/c 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ echo a/* b/* a/d b/a b/b b/c $ hg st -C A b/c a/c ? a/d $ hg ci -m "4 merge 1+2" created new head $ hg debugrename b/c b/c renamed from a/c:354ae8da6e890359ef49ade27b68bbc361f3ca88 (glob) Local directory rename with conflicting file added in remote source directory and untracked in local target directory. $ hg co -qC 1 $ echo target > b/c $ hg merge 2 b/c: untracked file differs abort: untracked files in working directory differ from files in requested revision [255] $ cat b/c target but it should succeed if the content matches $ hg cat -r 2 a/c > b/c $ hg merge 2 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st -C A b/c a/c ? a/d Local directory rename with conflicting file added in remote source directory and committed in local target directory. $ hg co -qC 1 $ echo target > b/c $ hg add b/c $ hg commit -qm 'new file in target directory' $ hg merge 2 merging b/c and a/c to b/c warning: conflicts while merging b/c! (edit, then use 'hg resolve --mark') 0 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg st -A M b/c a/c ? a/d ? b/c.orig C b/a C b/b $ cat b/c <<<<<<< working copy: f1c50ca4f127 - test: new file in target directory target ======= baz >>>>>>> merge rev: ce36d17b18fb - test: 2 add a/c $ rm b/c.orig Remote directory rename with conflicting file added in remote target directory and committed in local source directory. $ hg co -qC 2 $ hg st -A ? a/d C a/a C a/b C a/c $ hg merge 5 merging a/c and b/c to b/c warning: conflicts while merging b/c! (edit, then use 'hg resolve --mark') 2 files updated, 0 files merged, 2 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon [1] $ hg st -A M b/a M b/b M b/c a/c R a/a R a/b R a/c ? a/d ? b/c.orig $ cat b/c <<<<<<< working copy: ce36d17b18fb - test: 2 add a/c baz ======= target >>>>>>> merge rev: f1c50ca4f127 - test: new file in target directory Second scenario with two repos: $ cd .. $ hg init r1 $ cd r1 $ mkdir a $ echo foo > a/f $ hg add a adding a/f (glob) $ hg ci -m "a/f == foo" $ cd .. $ hg clone r1 r2 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd r2 $ hg mv a b moving a/f to b/f (glob) $ echo foo1 > b/f $ hg ci -m" a -> b, b/f == foo1" $ cd .. $ cd r1 $ mkdir a/aa $ echo bar > a/aa/g $ hg add a/aa adding a/aa/g (glob) $ hg ci -m "a/aa/g" $ hg pull ../r2 pulling from ../r2 searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (+1 heads) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg merge 2 files updated, 0 files merged, 1 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st -C M b/f A b/aa/g a/aa/g R a/aa/g R a/f $ cd .. Test renames to separate directories $ hg init a $ cd a $ mkdir a $ touch a/s $ touch a/t $ hg ci -Am0 adding a/s adding a/t Add more files $ touch a/s2 $ touch a/t2 $ hg ci -Am1 adding a/s2 adding a/t2 Do moves on a branch $ hg up 0 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ mkdir s $ mkdir t $ hg mv a/s s $ hg mv a/t t $ hg ci -Am2 created new head $ hg st --copies --change . A s/s a/s A t/t a/t R a/s R a/t Merge shouldn't move s2, t2 $ hg merge 2 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st --copies M a/s2 M a/t2 Try the merge in the other direction. It may or may not be appropriate for status to list copies here. $ hg up -C 1 4 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg merge 2 files updated, 0 files merged, 2 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg st --copies M s/s M t/t R a/s R a/t