Mercurial > hg
view tests/test-diff-upgrade.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 | e955549cd045 |
| children | 15ddf83fbf84 |
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#require execbit $ cat <<EOF >> $HGRCPATH > [extensions] > autodiff = $TESTDIR/autodiff.py > [diff] > nodates = 1 > EOF $ hg init repo $ cd repo make a combination of new, changed and deleted file $ echo regular > regular $ echo rmregular > rmregular $ $PYTHON -c "file('bintoregular', 'wb').write('\0')" $ touch rmempty $ echo exec > exec $ chmod +x exec $ echo rmexec > rmexec $ chmod +x rmexec $ echo setexec > setexec $ echo unsetexec > unsetexec $ chmod +x unsetexec $ echo binary > binary $ $PYTHON -c "file('rmbinary', 'wb').write('\0')" $ hg ci -Am addfiles adding binary adding bintoregular adding exec adding regular adding rmbinary adding rmempty adding rmexec adding rmregular adding setexec adding unsetexec $ echo regular >> regular $ echo newregular >> newregular $ rm rmempty $ touch newempty $ rm rmregular $ echo exec >> exec $ echo newexec > newexec $ echo bintoregular > bintoregular $ chmod +x newexec $ rm rmexec $ chmod +x setexec $ chmod -x unsetexec $ $PYTHON -c "file('binary', 'wb').write('\0\0')" $ $PYTHON -c "file('newbinary', 'wb').write('\0')" $ rm rmbinary $ hg addremove -s 0 adding newbinary adding newempty adding newexec adding newregular removing rmbinary removing rmempty removing rmexec removing rmregular git=no: regular diff for all files $ hg autodiff --git=no diff -r a66d19b9302d binary Binary file binary has changed diff -r a66d19b9302d bintoregular Binary file bintoregular has changed diff -r a66d19b9302d exec --- a/exec +++ b/exec @@ -1,1 +1,2 @@ exec +exec diff -r a66d19b9302d newbinary Binary file newbinary has changed diff -r a66d19b9302d newexec --- /dev/null +++ b/newexec @@ -0,0 +1,1 @@ +newexec diff -r a66d19b9302d newregular --- /dev/null +++ b/newregular @@ -0,0 +1,1 @@ +newregular diff -r a66d19b9302d regular --- a/regular +++ b/regular @@ -1,1 +1,2 @@ regular +regular diff -r a66d19b9302d rmbinary Binary file rmbinary has changed diff -r a66d19b9302d rmexec --- a/rmexec +++ /dev/null @@ -1,1 +0,0 @@ -rmexec diff -r a66d19b9302d rmregular --- a/rmregular +++ /dev/null @@ -1,1 +0,0 @@ -rmregular git=yes: git diff for single regular file $ hg autodiff --git=yes regular diff --git a/regular b/regular --- a/regular +++ b/regular @@ -1,1 +1,2 @@ regular +regular git=auto: regular diff for regular files and non-binary removals $ hg autodiff --git=auto regular newregular rmregular rmexec diff -r a66d19b9302d newregular --- /dev/null +++ b/newregular @@ -0,0 +1,1 @@ +newregular diff -r a66d19b9302d regular --- a/regular +++ b/regular @@ -1,1 +1,2 @@ regular +regular diff -r a66d19b9302d rmexec --- a/rmexec +++ /dev/null @@ -1,1 +0,0 @@ -rmexec diff -r a66d19b9302d rmregular --- a/rmregular +++ /dev/null @@ -1,1 +0,0 @@ -rmregular $ for f in exec newexec setexec unsetexec binary newbinary newempty rmempty rmbinary bintoregular; do > echo > echo '% git=auto: git diff for' $f > hg autodiff --git=auto $f > done % git=auto: git diff for exec diff -r a66d19b9302d exec --- a/exec +++ b/exec @@ -1,1 +1,2 @@ exec +exec % git=auto: git diff for newexec diff --git a/newexec b/newexec new file mode 100755 --- /dev/null +++ b/newexec @@ -0,0 +1,1 @@ +newexec % git=auto: git diff for setexec diff --git a/setexec b/setexec old mode 100644 new mode 100755 % git=auto: git diff for unsetexec diff --git a/unsetexec b/unsetexec old mode 100755 new mode 100644 % git=auto: git diff for binary diff --git a/binary b/binary index a9128c283485202893f5af379dd9beccb6e79486..09f370e38f498a462e1ca0faa724559b6630c04f GIT binary patch literal 2 Jc${Nk0000200961 % git=auto: git diff for newbinary diff --git a/newbinary b/newbinary new file mode 100644 index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..f76dd238ade08917e6712764a16a22005a50573d GIT binary patch literal 1 Ic${MZ000310RR91 % git=auto: git diff for newempty diff --git a/newempty b/newempty new file mode 100644 % git=auto: git diff for rmempty diff --git a/rmempty b/rmempty deleted file mode 100644 % git=auto: git diff for rmbinary diff --git a/rmbinary b/rmbinary deleted file mode 100644 index f76dd238ade08917e6712764a16a22005a50573d..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 GIT binary patch literal 0 Hc$@<O00001 % git=auto: git diff for bintoregular diff --git a/bintoregular b/bintoregular index f76dd238ade08917e6712764a16a22005a50573d..9c42f2b6427d8bf034b7bc23986152dc01bfd3ab GIT binary patch literal 13 Uc$`bh%qz(+N=+}#Ni5<5043uE82|tP git=warn: regular diff with data loss warnings $ hg autodiff --git=warn diff -r a66d19b9302d binary Binary file binary has changed diff -r a66d19b9302d bintoregular Binary file bintoregular has changed diff -r a66d19b9302d exec --- a/exec +++ b/exec @@ -1,1 +1,2 @@ exec +exec diff -r a66d19b9302d newbinary Binary file newbinary has changed diff -r a66d19b9302d newexec --- /dev/null +++ b/newexec @@ -0,0 +1,1 @@ +newexec diff -r a66d19b9302d newregular --- /dev/null +++ b/newregular @@ -0,0 +1,1 @@ +newregular diff -r a66d19b9302d regular --- a/regular +++ b/regular @@ -1,1 +1,2 @@ regular +regular diff -r a66d19b9302d rmbinary Binary file rmbinary has changed diff -r a66d19b9302d rmexec --- a/rmexec +++ /dev/null @@ -1,1 +0,0 @@ -rmexec diff -r a66d19b9302d rmregular --- a/rmregular +++ /dev/null @@ -1,1 +0,0 @@ -rmregular data lost for: binary data lost for: bintoregular data lost for: newbinary data lost for: newempty data lost for: newexec data lost for: rmbinary data lost for: rmempty data lost for: setexec data lost for: unsetexec git=abort: fail on execute bit change $ hg autodiff --git=abort regular setexec abort: losing data for setexec [255] git=abort: succeed on regular file $ hg autodiff --git=abort regular diff -r a66d19b9302d regular --- a/regular +++ b/regular @@ -1,1 +1,2 @@ regular +regular $ cd ..