#require no-windows

  $ . "$TESTDIR/remotefilelog-library.sh"

  $ hg init master

  $ cd master

  $ cat >> .hg/hgrc <<EOF

  > [remotefilelog]

  > server=True

  > EOF

  $ echo x > x

  $ echo z > z

  $ hg commit -qAm x

  $ echo x2 > x

  $ echo y > y

  $ hg commit -qAm y

  $ hg bookmark foo

  $ cd ..

# prefetch a revision

  $ hgcloneshallow ssh://user@dummy/master shallow --noupdate

  streaming all changes

  3 files to transfer, 528 bytes of data (no-zstd !)

  transferred 528 bytes in * seconds (* */sec) (glob) (no-zstd !)

  3 files to transfer, 532 bytes of data (zstd no-rust !)

  transferred 532 bytes in * seconds (* */sec) (glob) (zstd no-rust !)

  5 files to transfer, 658 bytes of data (zstd rust !)

  transferred 658 bytes in * seconds (*/sec) (glob) (zstd rust !)

  searching for changes

  no changes found

  $ cd shallow

  $ hg prefetch -r 0

  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 x

  x

# prefetch with base

  $ clearcache

  $ hg prefetch -r 0::1 -b 0

  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 1 x

  x2

  $ hg cat -r 1 y

  y

  $ hg cat -r 0 x

  x

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 z

  z

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg prefetch -r 0::1 --base 0

  $ hg prefetch -r 0::1 -b 1

  $ hg prefetch -r 0::1

# prefetch a range of revisions

  $ clearcache

  $ hg prefetch -r 0::1

  4 files fetched over 1 fetches - (4 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 0 x

  x

  $ hg cat -r 1 x

  x2

# prefetch certain files

  $ clearcache

  $ hg prefetch -r 1 x

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ hg cat -r 1 x

  x2

  $ hg cat -r 1 y

  y

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

# prefetch on pull when configured

  $ printf "[remotefilelog]\npullprefetch=bookmark()\n" >> .hg/hgrc

  $ hg strip tip

  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/109c3a557a73-3f43405e-backup.hg (glob)

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ clearcache

  $ hg pull

  pulling from ssh://user@dummy/master

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  updating bookmark foo

  added 1 changesets with 0 changes to 0 files

  new changesets 109c3a557a73

  (run 'hg update' to get a working copy)

  prefetching file contents

  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)

  $ hg up tip

  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

# prefetch only fetches changes not in working copy

  $ hg strip tip

  1 files updated, 0 files merged, 1 files removed, 0 files unresolved

  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/109c3a557a73-3f43405e-backup.hg (glob)

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)

  $ clearcache

  $ hg pull

  pulling from ssh://user@dummy/master

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  updating bookmark foo

  added 1 changesets with 0 changes to 0 files

  new changesets 109c3a557a73

  (run 'hg update' to get a working copy)

  prefetching file contents

  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

# Make some local commits that produce the same file versions as are on the

# server. To simulate a situation where we have local commits that were somehow

# pushed, and we will soon pull.

  $ hg prefetch -r 'all()'

  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ hg strip -q -r 0

  $ echo x > x

  $ echo z > z

  $ hg commit -qAm x

  $ echo x2 > x

  $ echo y > y

  $ hg commit -qAm y

# prefetch server versions, even if local versions are available

  $ clearcache

  $ hg strip -q tip

  $ hg pull

  pulling from ssh://user@dummy/master

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  updating bookmark foo

  added 1 changesets with 0 changes to 0 files

  new changesets 109c3a557a73

  1 local changesets published (?)

  (run 'hg update' to get a working copy)

  prefetching file contents

  2 files fetched over 1 fetches - (2 misses, 0.00% hit ratio) over *s (glob)

  $ cd ..

# Prefetch unknown files during checkout

  $ hgcloneshallow ssh://user@dummy/master shallow2

  streaming all changes

  3 files to transfer, 528 bytes of data (no-zstd !)

  transferred 528 bytes in * seconds * (glob) (no-zstd !)

  3 files to transfer, 532 bytes of data (zstd no-rust !)

  transferred 532 bytes in * seconds (* */sec) (glob) (zstd no-rust !)

  5 files to transfer, 658 bytes of data (zstd rust !)

  transferred 658 bytes in * seconds (*/sec) (glob) (zstd rust !)

  searching for changes

  no changes found

  updating to branch default

  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over * (glob)

  $ cd shallow2

  $ hg up -q null

  $ echo x > x

  $ echo y > y

  $ echo z > z

  $ clearcache

  $ hg up tip

  x: untracked file differs

  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)

  abort: untracked files in working directory differ from files in requested revision

  [20]

  $ hg revert --all

# Test batch fetching of lookup files during hg status

  $ hg up --clean tip

  3 files updated, 0 files merged, 0 files removed, 0 files unresolved

  $ hg debugrebuilddirstate

  $ clearcache

  $ hg status

  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)

# Prefetch during addrename detection

  $ hg up -q --clean tip

  $ hg revert --all

  $ mv x x2

  $ mv y y2

  $ mv z z2

  $ echo a > a

  $ hg add a

  $ rm a

  $ clearcache

  $ hg addremove -s 50 > /dev/null

  3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over * (glob)

  $ hg revert --all

  forgetting x2

  forgetting y2

  forgetting z2

  undeleting x

  undeleting y

  undeleting z

# Revert across double renames. Note: the scary "abort", error is because

# https://bz.mercurial-scm.org/5419 .

  $ cd ../master

  $ hg mv z z2

  $ hg commit -m 'move z -> z2'

  $ cd ../shallow2

  $ hg pull -q

  $ clearcache

  $ hg mv y y2

  y2: not overwriting - file exists

  ('hg rename --after' to record the rename)

  [1]

  $ hg mv x x2

  x2: not overwriting - file exists

  ('hg rename --after' to record the rename)

  [1]

  $ hg mv z2 z3

  z2: not copying - file is not managed

  abort: no files to copy

  (maybe you meant to use --after --at-rev=.)

  [10]

  $ find $CACHEDIR -type f | sort

.. The following output line about files fetches is globed because it is

.. flaky, the core the test is checked when checking the cache dir, so

.. hopefully this flakyness is not hiding any actual bug.

  $ hg revert -a -r 1 || true

  ? files fetched over 1 fetches - (? misses, 0.00% hit ratio) over * (glob)

  abort: z2@109c3a557a73: not found in manifest (?)

  $ find $CACHEDIR -type f | sort

  $TESTTMP/hgcache/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/ef95c5376f34698742fe34f315fd82136f8f68c0

  $TESTTMP/hgcache/master/39/5df8f7c51f007019cb30201c49e884b46b92fa/69a1b67522704ec122181c0890bd16e9d3e7516a

  $TESTTMP/hgcache/master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca

  $TESTTMP/hgcache/repos

# warning when we have excess remotefilelog fetching

  $ cat > repeated_fetch.py << EOF

  > import binascii

  > from mercurial import extensions, registrar

  > cmdtable = {}

  > command = registrar.command(cmdtable)

  > @command(b'repeated-fetch', [], b'', inferrepo=True)

  > def repeated_fetch(ui, repo, *args, **opts):

  >     for i in range(20):

  >         try:

  >             hexid = (b'%02x' % (i + 1)) * 20

  >             repo.fileservice.prefetch([(b'somefile.txt', hexid)])

  >         except Exception:

  >             pass

  > EOF

We should only output to the user once. We're ignoring most of the output

because we're not actually fetching anything real here, all the hashes are

bogus, so it's just going to be errors and a final summary of all the misses.

  $ hg --config extensions.repeated_fetch=repeated_fetch.py \

  >    --config remotefilelog.fetchwarning="fetch warning!" \

  >    --config extensions.blackbox= \

  >    repeated-fetch 2>&1 | grep 'fetch warning'

  fetch warning!

We should output to blackbox three times, with a stack trace on each (though

that isn't tested here).

  $ grep 'excess remotefilelog fetching' .hg/blackbox.log

  .* excess remotefilelog fetching: (re)

  .* excess remotefilelog fetching: (re)

  .* excess remotefilelog fetching: (re)