annotate tests/test-lfs.t @ 35098:66c5a8cf2868

lfs: import the Facebook git-lfs client extension

The purpose of this is the same as the built-in largefiles extension- to handle
huge files outside of the normal storage system, generally to keep the amount of
data cloned to a lower amount.  There are several benefits of implementing the
git-lfs protocol, instead of using the largefiles extension:

  - Bitbucket and Github support (and probably wider support in 3rd party
    hosting sites in general). [1][2]

  - The number of hg internals monkey patched are several orders of magnitude
    lower, so it will be easier to reason about and maintain.  Future commands
    will likely just work, without requiring various wrappers.

  - The "standin" files are only written to the filelog, not the disk.  That
    should avoid weird edge cases where the largefile and standin files get out
    of sync. [3]  It also avoids the occasional printing of the "hidden" standin
    file in various messages.

  - Filesets like size() will work, even if the file isn't present.  (It always
    says 41 bytes for largefiles, whether present or not.)

The only place that I see where largefiles comes out on top is that it works
with `hg serve` for simple sharing, without external infrastructure.  Getting
lfs-test-server working was a hassle, and took awhile to figure out.  Maybe we
can do something to make it work in the future.

Long term, I expect that this will be highly preferred over largefiles.  But if
we are to recommend this to largefile users, there are some UI issues to
bikeshed.  Until they are resolved, I've marked this experimental, and am not
putting a pointer to this in the largefiles help.  The (non exhaustive) list of
issues I've seen so far are:

  - It isn't sufficient to just enable the largefiles extension- you have to
    explicitly add a file with --large before it will pay attention to the
    configured sizes and patterns on future adds.  The justification being that
    once you use it, you're stuck with it.  I've seen people confused by this,
    and haven't liked it myself.  But it's also saved me a few times.  Should we
    do something like have a specific enabling config setting that must be set
    in the local repo config, so that enabling this extension in the user or
    system hgrc doesn't silently start storing lfs files?

  - The largefiles extension adds a repo requirement when the first largefile is
    committed, so that the extension must always be enabled in the future.  This
    extension is not doing that, and since I only enabled it locally to avoid
    infecting other repos, I got a cryptic error about missing flag processors
    when I cloned.  Is there no repo requirement due to shallow/narrow clone
    considerations (or other future advanced things)?

  - In the (small amount of) reading I've done about the git implementation, it
    seems that the files and sizes are stored in a tracked .gitattributes file.
    I think a tracked file for this would be extremely useful for consistency
    across developers, but this kind of touches on the tracked hgrc file
    proposal a few months back.

  - The git client can specify file patterns, not just sizes.

  - The largefiles extension has a cache directory in the local repo, but also a
    system wide one.  We should probably implement a system wide cache too, so
    that multiple clones don't have to refetch the files from the server.

  - Jun mentioned other missing features, like SSH authentication, gc, etc.

The code corresponds to c0492b73c7ef in hg-experimental. [4]  The only tweaks
are to load the extension in the tests with 'lfs=' instead of
'lfs=$TESTDIR/../hgext3rd/lfs', change the import in the *.py test to hgext
(from hgext3rd), add the 'testedwith' declaration, and mark it experimental for
now.  The infinite-push, p4fastimport, and remotefilelog tests were left behind.

The devel-warnings for unregistered config options are not corrected yet, nor
are the import check warnings.

[1] https://www.mercurial-scm.org/pipermail/mercurial/2017-November/050699.html
[2] https://bitbucket.org/site/master/issues/3843/largefiles-support-bb-3903
[3] https://bz.mercurial-scm.org/show_bug.cgi?id=5738
[4] https://bitbucket.org/facebook/hg-experimental

# Initial setup

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > lfs=
  > [lfs]
  > threshold=1000B
  > EOF

  $ LONG=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

# Prepare server and enable extension
  $ hg init server
  $ hg clone -q server client
  $ cd client

# Commit small file
  $ echo s > smallfile
  $ hg commit -Aqm "add small file"

# Commit large file
  $ echo $LONG > largefile
  $ hg commit --traceback -Aqm "add large file"

# Ensure metadata is stored
  $ hg debugdata largefile 0
  version https://git-lfs.github.com/spec/v1
  oid sha256:f11e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
  size 1501
  x-is-binary 0

# Check the blobstore is populated
  $ find .hg/store/lfs/objects | sort
  .hg/store/lfs/objects
  .hg/store/lfs/objects/f1
  .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b

# Check the blob stored contains the actual contents of the file
  $ cat .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b
  AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

# Push changes to the server

  $ hg push
  pushing to $TESTTMP/server (glob)
  searching for changes
  abort: lfs.url needs to be configured
  [255]

  $ cat >> $HGRCPATH << EOF
  > [lfs]
  > url=file:$TESTTMP/dummy-remote/
  > EOF

  $ hg push -v | egrep -v '^(uncompressed| )'
  pushing to $TESTTMP/server (glob)
  searching for changes
  2 changesets found
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files

# Unknown URL scheme

  $ hg push --config lfs.url=ftp://foobar
  abort: lfs: unknown url scheme: ftp
  [255]

  $ cd ../

# Initialize new client (not cloning) and setup extension
  $ hg init client2
  $ cd client2
  $ cat >> .hg/hgrc <<EOF
  > [paths]
  > default = $TESTTMP/server
  > EOF

# Pull from server
  $ hg pull default
  pulling from $TESTTMP/server (glob)
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 2 changesets with 2 changes to 2 files
  new changesets b29ba743f89d:00c137947d30
  (run 'hg update' to get a working copy)

# Check the blobstore is not yet populated
  $ [ -d .hg/store/lfs/objects ]
  [1]

# Update to the last revision containing the large file
  $ hg update
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved

# Check the blobstore has been populated on update
  $ find .hg/store/lfs/objects | sort
  .hg/store/lfs/objects
  .hg/store/lfs/objects/f1
  .hg/store/lfs/objects/f1/1e77c257047a398492d8d6cb9f6acf3aa7c4384bb23080b43546053e183e4b

# Check the contents of the file are fetched from blobstore when requested
  $ hg cat -r . largefile
  AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

# Check the file has been copied in the working copy
  $ cat largefile
  AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC

  $ cd ..

# Check rename, and switch between large and small files

  $ hg init repo3
  $ cd repo3
  $ cat >> .hg/hgrc << EOF
  > [lfs]
  > threshold=10B
  > EOF

  $ echo LONGER-THAN-TEN-BYTES-WILL-TRIGGER-LFS > large
  $ echo SHORTER > small
  $ hg add . -q
  $ hg commit -m 'commit with lfs content'

  $ hg mv large l
  $ hg mv small s
  $ hg commit -m 'renames'

  $ echo SHORT > l
  $ echo BECOME-LARGER-FROM-SHORTER > s
  $ hg commit -m 'large to small, small to large'

  $ echo 1 >> l
  $ echo 2 >> s
  $ hg commit -m 'random modifications'

  $ echo RESTORE-TO-BE-LARGE > l
  $ echo SHORTER > s
  $ hg commit -m 'switch large and small again'

# Test lfs_files template

  $ hg log -r 'all()' -T '{rev} {join(lfs_files, ", ")}\n'
  0 large
  1 l
  2 s
  3 s
  4 l

# Push and pull the above repo

  $ hg --cwd .. init repo4
  $ hg push ../repo4
  pushing to ../repo4
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 10 changes to 4 files

  $ hg --cwd .. init repo5
  $ hg --cwd ../repo5 pull ../repo3
  pulling from ../repo3
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 10 changes to 4 files
  new changesets fd47a419c4f7:5adf850972b9
  (run 'hg update' to get a working copy)

  $ cd ..

# Test clone

  $ hg init repo6
  $ cd repo6
  $ cat >> .hg/hgrc << EOF
  > [lfs]
  > threshold=30B
  > EOF

  $ echo LARGE-BECAUSE-IT-IS-MORE-THAN-30-BYTES > large
  $ echo SMALL > small
  $ hg commit -Aqm 'create a lfs file' large small
  $ hg debuglfsupload -r 'all()' -v

  $ cd ..

  $ hg clone repo6 repo7
  updating to branch default
  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd repo7
  $ cat large
  LARGE-BECAUSE-IT-IS-MORE-THAN-30-BYTES
  $ cat small
  SMALL

  $ cd ..

# Test rename and status

  $ hg init repo8
  $ cd repo8
  $ cat >> .hg/hgrc << EOF
  > [lfs]
  > threshold=10B
  > EOF

  $ echo THIS-IS-LFS-BECAUSE-10-BYTES > a1
  $ echo SMALL > a2
  $ hg commit -m a -A a1 a2
  $ hg status
  $ hg mv a1 b1
  $ hg mv a2 a1
  $ hg mv b1 a2
  $ hg commit -m b
  $ hg status
  $ HEADER=$'\1\n'
  $ printf '%sSTART-WITH-HG-FILELOG-METADATA' "$HEADER" > a2
  $ printf '%sMETA\n' "$HEADER" > a1
  $ hg commit -m meta
  $ hg status
  $ hg log -T '{rev}: {file_copies} | {file_dels} | {file_adds}\n'
  2:  |  | 
  1: a1 (a2)a2 (a1) |  | 
  0:  |  | a1 a2

  $ for n in a1 a2; do
  >   for r in 0 1 2; do
  >     printf '\n%s @ %s\n' $n $r
  >     hg debugdata $n $r
  >   done
  > done
  
  a1 @ 0
  version https://git-lfs.github.com/spec/v1
  oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
  size 29
  x-is-binary 0
  
  a1 @ 1
  \x01 (esc)
  copy: a2
  copyrev: 50470ad23cf937b1f4b9f80bfe54df38e65b50d9
  \x01 (esc)
  SMALL
  
  a1 @ 2
  \x01 (esc)
  \x01 (esc)
  \x01 (esc)
  META
  
  a2 @ 0
  SMALL
  
  a2 @ 1
  version https://git-lfs.github.com/spec/v1
  oid sha256:5bb8341bee63b3649f222b2215bde37322bea075a30575aa685d8f8d21c77024
  size 29
  x-hg-copy a1
  x-hg-copyrev be23af27908a582af43e5cda209a5a9b319de8d4
  x-is-binary 0
  
  a2 @ 2
  version https://git-lfs.github.com/spec/v1
  oid sha256:876dadc86a8542f9798048f2c47f51dbf8e4359aed883e8ec80c5db825f0d943
  size 32
  x-is-binary 0

# Verify commit hashes include rename metadata

  $ hg log -T '{rev}:{node|short} {desc}\n'
  2:0fae949de7fa meta
  1:9cd6bdffdac0 b
  0:7f96794915f7 a

  $ cd ..

# Test bundle

  $ hg init repo9
  $ cd repo9
  $ cat >> .hg/hgrc << EOF
  > [lfs]
  > threshold=10B
  > [diff]
  > git=1
  > EOF

  $ for i in 0 single two three 4; do
  >   echo 'THIS-IS-LFS-'$i > a
  >   hg commit -m a-$i -A a
  > done

  $ hg update 2 -q
  $ echo 'THIS-IS-LFS-2-CHILD' > a
  $ hg commit -m branching -q

  $ hg bundle --base 1 bundle.hg -v
  4 changesets found
  uncompressed size of bundle content:
       * (changelog) (glob)
       * (manifests) (glob)
       *  a (glob)
  $ hg --config extensions.strip= strip -r 2 --no-backup --force -q
  $ hg -R bundle.hg log -p -T '{rev} {desc}\n' a
  5 branching
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-two
  +THIS-IS-LFS-2-CHILD
  
  4 a-4
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-three
  +THIS-IS-LFS-4
  
  3 a-three
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-two
  +THIS-IS-LFS-three
  
  2 a-two
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-single
  +THIS-IS-LFS-two
  
  1 a-single
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-0
  +THIS-IS-LFS-single
  
  0 a-0
  diff --git a/a b/a
  new file mode 100644
  --- /dev/null
  +++ b/a
  @@ -0,0 +1,1 @@
  +THIS-IS-LFS-0
  
  $ hg bundle -R bundle.hg --base 1 bundle-again.hg -q
  $ hg -R bundle-again.hg log -p -T '{rev} {desc}\n' a
  5 branching
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-two
  +THIS-IS-LFS-2-CHILD
  
  4 a-4
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-three
  +THIS-IS-LFS-4
  
  3 a-three
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-two
  +THIS-IS-LFS-three
  
  2 a-two
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-single
  +THIS-IS-LFS-two
  
  1 a-single
  diff --git a/a b/a
  --- a/a
  +++ b/a
  @@ -1,1 +1,1 @@
  -THIS-IS-LFS-0
  +THIS-IS-LFS-single
  
  0 a-0
  diff --git a/a b/a
  new file mode 100644
  --- /dev/null
  +++ b/a
  @@ -0,0 +1,1 @@
  +THIS-IS-LFS-0
  
  $ cd ..

# Test isbinary

  $ hg init repo10
  $ cd repo10
  $ cat >> .hg/hgrc << EOF
  > [extensions]
  > lfs=
  > [lfs]
  > threshold=1
  > EOF
  $ $PYTHON <<'EOF'
  > def write(path, content):
  >     with open(path, 'wb') as f:
  >         f.write(content)
  > write('a', b'\0\0')
  > write('b', b'\1\n')
  > write('c', b'\1\n\0')
  > write('d', b'xx')
  > EOF
  $ hg add a b c d
  $ hg diff --stat
   a |  Bin 
   b |    1 +
   c |  Bin 
   d |    1 +
   4 files changed, 2 insertions(+), 0 deletions(-)
  $ hg commit -m binarytest
  $ cat > $TESTTMP/dumpbinary.py << EOF
  > def reposetup(ui, repo):
  >     for n in 'abcd':
  >         ui.write(('%s: binary=%s\n') % (n, repo['.'][n].isbinary()))
  > EOF
  $ hg --config extensions.dumpbinary=$TESTTMP/dumpbinary.py id --trace
  a: binary=True
  b: binary=False
  c: binary=True
  d: binary=False
  b55353847f02 tip

  $ cd ..

# Test fctx.cmp fastpath - diff without LFS blobs

  $ hg init repo11
  $ cd repo11
  $ cat >> .hg/hgrc <<EOF
  > [lfs]
  > threshold=1
  > EOF
  $ for i in 1 2 3; do
  >     cp ../repo10/a a
  >     if [ $i = 3 ]; then
  >         # make a content-only change
  >         chmod +x a
  >         i=2
  >     fi
  >     echo $i >> a
  >     hg commit -m $i -A a
  > done
  $ [ -d .hg/store/lfs/objects ]

  $ cd ..

  $ hg clone repo11 repo12 --noupdate
  $ cd repo12
  $ hg log --removed -p a -T '{desc}\n' --config diff.nobinary=1 --git
  2
  diff --git a/a b/a
  old mode 100644
  new mode 100755
  
  2
  diff --git a/a b/a
  Binary file a has changed
  
  1
  diff --git a/a b/a
  new file mode 100644
  Binary file a has changed
  
  $ [ -d .hg/store/lfs/objects ]
  [1]

  $ cd ..

# Verify the repos

  $ cat > $TESTTMP/dumpflog.py << EOF
  > # print raw revision sizes, flags, and hashes for certain files
  > import hashlib
  > from mercurial import revlog
  > from mercurial.node import short
  > def hash(rawtext):
  >     h = hashlib.sha512()
  >     h.update(rawtext)
  >     return h.hexdigest()[:4]
  > def reposetup(ui, repo):
  >     # these 2 files are interesting
  >     for name in ['l', 's']:
  >         fl = repo.file(name)
  >         if len(fl) == 0:
  >             continue
  >         sizes = [revlog.revlog.rawsize(fl, i) for i in fl]
  >         texts = [fl.revision(i, raw=True) for i in fl]
  >         flags = [fl.flags(i) for i in fl]
  >         hashes = [hash(t) for t in texts]
  >         print('  %s: rawsizes=%r flags=%r hashes=%r'
  >               % (name, sizes, flags, hashes))
  > EOF

  $ for i in client client2 server repo3 repo4 repo5 repo6 repo7 repo8 repo9 \
  >          repo10; do
  >   echo 'repo:' $i
  >   hg --cwd $i verify --config extensions.dumpflog=$TESTTMP/dumpflog.py -q
  > done
  repo: client
  repo: client2
  repo: server
  repo: repo3
    l: rawsizes=[211, 6, 8, 141] flags=[8192, 0, 0, 8192] hashes=['d2b8', '948c', 'cc88', '724d']
    s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
  repo: repo4
    l: rawsizes=[211, 6, 8, 141] flags=[8192, 0, 0, 8192] hashes=['d2b8', '948c', 'cc88', '724d']
    s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
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    s: rawsizes=[74, 141, 141, 8] flags=[0, 8192, 8192, 0] hashes=['3c80', 'fce0', '874a', '826b']
  repo: repo6
  repo: repo7
  repo: repo8
  repo: repo9
  repo: repo10