view tests/test-phases.t @ 40326:fed697fa1734

sqlitestore: file storage backend using SQLite

This commit provides an extension which uses SQLite to store file
data (as opposed to revlogs).

As the inline documentation describes, there are still several
aspects to the extension that are incomplete. But it's a start.
The extension does support basic clone, checkout, and commit
workflows, which makes it suitable for simple use cases.

One notable missing feature is support for "bundlerepos." This is
probably responsible for the most test failures when the extension
is activated as part of the test suite.

All revision data is stored in SQLite. Data is stored as zstd
compressed chunks (default if zstd is available), zlib compressed
chunks (default if zstd is not available), or raw chunks (if
configured or if a compressed delta is not smaller than the raw
delta). This makes things very similar to revlogs.

Unlike revlogs, the extension doesn't yet enforce a limit on delta
chain length. This is an obvious limitation and should be addressed.
This is somewhat mitigated by the use of zstd, which is much faster
than zlib to decompress.

There is a dedicated table for storing deltas. Deltas are stored
by the SHA-1 hash of their uncompressed content. The "fileindex" table
has columns that reference the delta for each revision and the base
delta that delta should be applied against. A recursive SQL query
is used to resolve the delta chain along with the delta data.

By storing deltas by hash, we are able to de-duplicate delta storage!
With revlogs, the same deltas in different revlogs would result in
duplicate storage of that delta. In this scheme, inserting the
duplicate delta is a no-op and delta chains simply reference the
existing delta.

When initially implementing this extension, I did not have
content-indexed deltas and deltas could be duplicated across files
(just like revlogs). When I implemented content-indexed deltas, the
size of the SQLite database for a full clone of mozilla-unified
dropped:

before: 2,554,261,504 bytes
after:  2,488,754,176 bytes

Surprisingly, this is still larger than the bytes size of revlog
files:

revlog files: 2,104,861,230 bytes
du -b:        2,254,381,614

I would have expected storage to be smaller since we're not limiting
delta chain length and since we're using zstd instead of zlib. I
suspect the SQLite indexes and per-column overhead account for the
bulk of the differences. (Keep in mind that revlog uses a 64-byte
packed struct for revision index data and deltas are stored without
padding. Aside from the 12 unused bytes in the 32 byte node field,
revlogs are pretty efficient.) Another source of overhead is file
name storage. With revlogs, file names are stored in the filesystem.
But with SQLite, we need to store file names in the database. This is
roughly equivalent to the size of the fncache file, which for the
mozilla-unified repository is ~34MB.

Since the SQLite database isn't append-only and since delta chains
can reference any delta, this opens some interesting possibilities.
For example, we could store deltas in reverse, such that fulltexts
are stored for newer revisions and deltas are applied to reconstruct
older revisions. This is likely a more optimal storage strategy for
version control, as new data tends to be more frequently accessed
than old data. We would obviously need wire protocol support for
transferring revision data from newest to oldest. And we would
probably need some kind of mechanism for "re-encoding" stores. But
it should be doable.

This extension is very much experimental quality. There are a handful
of features that don't work. It probably isn't suitable for day-to-day
use. But it could be used in limited cases (e.g. read-only checkouts
like in CI). And it is also a good proving ground for alternate
storage backends. As we continue to define interfaces for all things
storage, it will be useful to have a viable alternate storage backend
to see how things shake out in practice.

test-storage.py passes on Python 2 and introduces no new test failures on
Python 3. Having the storage-level unit tests has proved to be insanely
useful when developing this extension. Those tests caught numerous bugs
during development and I'm convinced this style of testing is the way
forward for ensuring alternate storage backends work as intended. Of
course, test coverage isn't close to what it needs to be. But it is
a start. And what coverage we have gives me confidence that basic store
functionality is implemented properly.

Differential Revision: https://phab.mercurial-scm.org/D4928

  $ cat > $TESTTMP/hook.sh << 'EOF'
  > echo "test-hook-close-phase: $HG_NODE:  $HG_OLDPHASE -> $HG_PHASE"
  > EOF

  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > phasereport=$TESTDIR/testlib/ext-phase-report.py
  > [hooks]
  > txnclose-phase.test = sh $TESTTMP/hook.sh
  > EOF

  $ hglog() { hg log --template "{rev} {phaseidx} {desc}\n" $*; }
  $ mkcommit() {
  >    echo "$1" > "$1"
  >    hg add "$1"
  >    message="$1"
  >    shift
  >    hg ci -m "$message" $*
  > }

  $ hg init initialrepo
  $ cd initialrepo

Cannot change null revision phase

  $ hg phase --force --secret null
  abort: cannot change null revision phase
  [255]
  $ hg phase null
  -1: public

  $ mkcommit A
  test-debug-phase: new rev 0:  x -> 1
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> draft

New commit are draft by default

  $ hglog
  0 1 A

Following commit are draft too

  $ mkcommit B
  test-debug-phase: new rev 1:  x -> 1
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:   -> draft

  $ hglog
  1 1 B
  0 1 A

Draft commit are properly created over public one:

  $ hg phase --public .
  test-debug-phase: move rev 0: 1 -> 0
  test-debug-phase: move rev 1: 1 -> 0
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:  draft -> public
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:  draft -> public
  $ hg phase
  1: public
  $ hglog
  1 0 B
  0 0 A

  $ mkcommit C
  test-debug-phase: new rev 2:  x -> 1
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:   -> draft
  $ mkcommit D
  test-debug-phase: new rev 3:  x -> 1
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:   -> draft

  $ hglog
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test creating changeset as secret

  $ mkcommit E --config phases.new-commit='secret'
  test-debug-phase: new rev 4:  x -> 2
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:   -> secret
  $ hglog
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test the secret property is inherited

  $ mkcommit H
  test-debug-phase: new rev 5:  x -> 2
  test-hook-close-phase: a030c6be5127abc010fcbff1851536552e6951a8:   -> secret
  $ hglog
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Even on merge

  $ hg up -q 1
  $ mkcommit "B'"
  test-debug-phase: new rev 6:  x -> 1
  created new head
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:   -> draft
  $ hglog
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A
  $ hg merge 4 # E
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  (branch merge, don't forget to commit)
  $ hg phase
  6: draft
  4: secret
  $ hg ci -m "merge B' and E"
  test-debug-phase: new rev 7:  x -> 2
  test-hook-close-phase: 17a481b3bccb796c0521ae97903d81c52bfee4af:   -> secret

  $ hglog
  7 2 merge B' and E
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A

Test secret changeset are not pushed

  $ hg init ../push-dest
  $ cat > ../push-dest/.hg/hgrc << EOF
  > [phases]
  > publish=False
  > EOF
  $ hg outgoing ../push-dest --template='{rev} {phase} {desc|firstline}\n'
  comparing with ../push-dest
  searching for changes
  0 public A
  1 public B
  2 draft C
  3 draft D
  6 draft B'
  $ hg outgoing -r 'branch(default)' ../push-dest --template='{rev} {phase} {desc|firstline}\n'
  comparing with ../push-dest
  searching for changes
  0 public A
  1 public B
  2 draft C
  3 draft D
  6 draft B'

  $ hg push ../push-dest -f # force because we push multiple heads
  pushing to ../push-dest
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files (+1 heads)
  test-debug-phase: new rev 0:  x -> 0
  test-debug-phase: new rev 1:  x -> 0
  test-debug-phase: new rev 2:  x -> 1
  test-debug-phase: new rev 3:  x -> 1
  test-debug-phase: new rev 4:  x -> 1
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> public
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:   -> public
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:   -> draft
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:   -> draft
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:   -> draft
  $ hglog
  7 2 merge B' and E
  6 1 B'
  5 2 H
  4 2 E
  3 1 D
  2 1 C
  1 0 B
  0 0 A
  $ cd ../push-dest
  $ hglog
  4 1 B'
  3 1 D
  2 1 C
  1 0 B
  0 0 A

(Issue3303)
Check that remote secret changeset are ignore when checking creation of remote heads

We add a secret head into the push destination. This secret head shadows a
visible shared between the initial repo and the push destination.

  $ hg up -q 4 # B'
  $ mkcommit Z --config phases.new-commit=secret
  test-debug-phase: new rev 5:  x -> 2
  test-hook-close-phase: 2713879da13d6eea1ff22b442a5a87cb31a7ce6a:   -> secret
  $ hg phase .
  5: secret

We now try to push a new public changeset that descend from the common public
head shadowed by the remote secret head.

  $ cd ../initialrepo
  $ hg up -q 6 #B'
  $ mkcommit I
  test-debug-phase: new rev 8:  x -> 1
  created new head
  test-hook-close-phase: 6d6770faffce199f1fddd1cf87f6f026138cf061:   -> draft
  $ hg push ../push-dest
  pushing to ../push-dest
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files (+1 heads)
  test-debug-phase: new rev 6:  x -> 1
  test-hook-close-phase: 6d6770faffce199f1fddd1cf87f6f026138cf061:   -> draft

:note: The "(+1 heads)" is wrong as we do not had any visible head

check that branch cache with "served" filter are properly computed and stored

  $ ls ../push-dest/.hg/cache/branch2*
  ../push-dest/.hg/cache/branch2-base
  ../push-dest/.hg/cache/branch2-served
  $ cat ../push-dest/.hg/cache/branch2-served
  6d6770faffce199f1fddd1cf87f6f026138cf061 6 465891ffab3c47a3c23792f7dc84156e19a90722
  b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e o default
  6d6770faffce199f1fddd1cf87f6f026138cf061 o default
  $ hg heads -R ../push-dest --template '{rev}:{node} {phase}\n'  #update visible cache too
  6:6d6770faffce199f1fddd1cf87f6f026138cf061 draft
  5:2713879da13d6eea1ff22b442a5a87cb31a7ce6a secret
  3:b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e draft
  $ ls ../push-dest/.hg/cache/branch2*
  ../push-dest/.hg/cache/branch2-base
  ../push-dest/.hg/cache/branch2-served
  ../push-dest/.hg/cache/branch2-visible
  $ cat ../push-dest/.hg/cache/branch2-served
  6d6770faffce199f1fddd1cf87f6f026138cf061 6 465891ffab3c47a3c23792f7dc84156e19a90722
  b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e o default
  6d6770faffce199f1fddd1cf87f6f026138cf061 o default
  $ cat ../push-dest/.hg/cache/branch2-visible
  6d6770faffce199f1fddd1cf87f6f026138cf061 6
  b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e o default
  2713879da13d6eea1ff22b442a5a87cb31a7ce6a o default
  6d6770faffce199f1fddd1cf87f6f026138cf061 o default


Restore condition prior extra insertion.
  $ hg -q --config extensions.mq= strip .
  $ hg up -q 7
  $ cd ..

Test secret changeset are not pull

  $ hg init pull-dest
  $ cd pull-dest
  $ hg pull ../initialrepo
  pulling from ../initialrepo
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 5 changesets with 5 changes to 5 files (+1 heads)
  new changesets 4a2df7238c3b:cf9fe039dfd6
  test-debug-phase: new rev 0:  x -> 0
  test-debug-phase: new rev 1:  x -> 0
  test-debug-phase: new rev 2:  x -> 0
  test-debug-phase: new rev 3:  x -> 0
  test-debug-phase: new rev 4:  x -> 0
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> public
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:   -> public
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:   -> public
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:   -> public
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:   -> public
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hglog
  4 0 B'
  3 0 D
  2 0 C
  1 0 B
  0 0 A
  $ cd ..

But secret can still be bundled explicitly

  $ cd initialrepo
  $ hg bundle --base '4^' -r 'children(4)' ../secret-bundle.hg
  4 changesets found
  $ cd ..

Test secret changeset are not cloned
(during local clone)

  $ hg clone -qU initialrepo clone-dest
  test-debug-phase: new rev 0:  x -> 0
  test-debug-phase: new rev 1:  x -> 0
  test-debug-phase: new rev 2:  x -> 0
  test-debug-phase: new rev 3:  x -> 0
  test-debug-phase: new rev 4:  x -> 0
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> public
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:   -> public
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:   -> public
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:   -> public
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:   -> public
  $ hglog -R clone-dest
  4 0 B'
  3 0 D
  2 0 C
  1 0 B
  0 0 A

Test summary

  $ hg summary -R clone-dest --verbose
  parent: -1:000000000000  (no revision checked out)
  branch: default
  commit: (clean)
  update: 5 new changesets (update)
  $ hg summary -R initialrepo
  parent: 7:17a481b3bccb tip
   merge B' and E
  branch: default
  commit: (clean) (secret)
  update: 1 new changesets, 2 branch heads (merge)
  phases: 3 draft, 3 secret
  $ hg summary -R initialrepo --quiet
  parent: 7:17a481b3bccb tip
  update: 1 new changesets, 2 branch heads (merge)

Test revset

  $ cd initialrepo
  $ hglog -r 'public()'
  0 0 A
  1 0 B
  $ hglog -r 'draft()'
  2 1 C
  3 1 D
  6 1 B'
  $ hglog -r 'secret()'
  4 2 E
  5 2 H
  7 2 merge B' and E

test that phase are displayed in log at debug level

  $ hg log --debug
  changeset:   7:17a481b3bccb796c0521ae97903d81c52bfee4af
  tag:         tip
  phase:       secret
  parent:      6:cf9fe039dfd67e829edf6522a45de057b5c86519
  parent:      4:a603bfb5a83e312131cebcd05353c217d4d21dde
  manifest:    7:5e724ffacba267b2ab726c91fc8b650710deaaa8
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      C D E
  extra:       branch=default
  description:
  merge B' and E
  
  
  changeset:   6:cf9fe039dfd67e829edf6522a45de057b5c86519
  phase:       draft
  parent:      1:27547f69f25460a52fff66ad004e58da7ad3fb56
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    6:ab8bfef2392903058bf4ebb9e7746e8d7026b27a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      B'
  extra:       branch=default
  description:
  B'
  
  
  changeset:   5:a030c6be5127abc010fcbff1851536552e6951a8
  phase:       secret
  parent:      4:a603bfb5a83e312131cebcd05353c217d4d21dde
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    5:5c710aa854874fe3d5fa7192e77bdb314cc08b5a
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      H
  extra:       branch=default
  description:
  H
  
  
  changeset:   4:a603bfb5a83e312131cebcd05353c217d4d21dde
  phase:       secret
  parent:      3:b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    4:7173fd1c27119750b959e3a0f47ed78abe75d6dc
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      E
  extra:       branch=default
  description:
  E
  
  
  changeset:   3:b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e
  phase:       draft
  parent:      2:f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    3:6e1f4c47ecb533ffd0c8e52cdc88afb6cd39e20c
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      D
  extra:       branch=default
  description:
  D
  
  
  changeset:   2:f838bfaca5c7226600ebcfd84f3c3c13a28d3757
  phase:       draft
  parent:      1:27547f69f25460a52fff66ad004e58da7ad3fb56
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    2:66a5a01817fdf5239c273802b5b7618d051c89e4
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      C
  extra:       branch=default
  description:
  C
  
  
  changeset:   1:27547f69f25460a52fff66ad004e58da7ad3fb56
  phase:       public
  parent:      0:4a2df7238c3b48766b5e22fafbb8a2f506ec8256
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    1:cb5cbbc1bfbf24cc34b9e8c16914e9caa2d2a7fd
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      B
  extra:       branch=default
  description:
  B
  
  
  changeset:   0:4a2df7238c3b48766b5e22fafbb8a2f506ec8256
  phase:       public
  parent:      -1:0000000000000000000000000000000000000000
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    0:007d8c9d88841325f5c6b06371b35b4e8a2b1a83
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      A
  extra:       branch=default
  description:
  A
  
  


(Issue3707)
test invalid phase name

  $ mkcommit I --config phases.new-commit='babar'
  transaction abort!
  rollback completed
  abort: phases.new-commit: not a valid phase name ('babar')
  [255]
Test phase command
===================

initial picture

  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 public B
  |
  o  0 public A
  

display changesets phase

(mixing -r and plain rev specification)

  $ hg phase 1::4 -r 7
  1: public
  2: draft
  3: draft
  4: secret
  7: secret


move changeset forward

(with -r option)

  $ hg phase --public -r 2
  test-debug-phase: move rev 2: 1 -> 0
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:  draft -> public
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 public C
  |/
  o  1 public B
  |
  o  0 public A
  

move changeset backward

(without -r option)

  $ hg phase --draft --force 2
  test-debug-phase: move rev 2: 0 -> 1
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:  public -> draft
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 secret E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 public B
  |
  o  0 public A
  

move changeset forward and backward

  $ hg phase --draft --force 1::4
  test-debug-phase: move rev 1: 0 -> 1
  test-debug-phase: move rev 4: 2 -> 1
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:  public -> draft
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:  secret -> draft
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 secret merge B' and E
  |\
  | o  6 draft B'
  | |
  +---o  5 secret H
  | |
  o |  4 draft E
  | |
  o |  3 draft D
  | |
  o |  2 draft C
  |/
  o  1 draft B
  |
  o  0 public A
  
test partial failure

  $ hg phase --public 7
  test-debug-phase: move rev 1: 1 -> 0
  test-debug-phase: move rev 2: 1 -> 0
  test-debug-phase: move rev 3: 1 -> 0
  test-debug-phase: move rev 4: 1 -> 0
  test-debug-phase: move rev 6: 1 -> 0
  test-debug-phase: move rev 7: 2 -> 0
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:  draft -> public
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:  draft -> public
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:  draft -> public
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:  draft -> public
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:  draft -> public
  test-hook-close-phase: 17a481b3bccb796c0521ae97903d81c52bfee4af:  secret -> public
  $ hg phase --draft '5 or 7'
  test-debug-phase: move rev 5: 2 -> 1
  test-hook-close-phase: a030c6be5127abc010fcbff1851536552e6951a8:  secret -> draft
  cannot move 1 changesets to a higher phase, use --force
  phase changed for 1 changesets
  [1]
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    7 public merge B' and E
  |\
  | o  6 public B'
  | |
  +---o  5 draft H
  | |
  o |  4 public E
  | |
  o |  3 public D
  | |
  o |  2 public C
  |/
  o  1 public B
  |
  o  0 public A
  

test complete failure

  $ hg phase --draft 7
  cannot move 1 changesets to a higher phase, use --force
  no phases changed
  [1]

  $ cd ..

test hidden changeset are not cloned as public (issue3935)

  $ cd initialrepo

(enabling evolution)
  $ cat >> $HGRCPATH << EOF
  > [experimental]
  > evolution.createmarkers=True
  > EOF

(making a changeset hidden; H in that case)
  $ hg debugobsolete `hg id --debug -r 5`
  obsoleted 1 changesets

  $ cd ..
  $ hg clone initialrepo clonewithobs
  requesting all changes
  adding changesets
  adding manifests
  adding file changes
  added 7 changesets with 6 changes to 6 files
  new changesets 4a2df7238c3b:17a481b3bccb
  test-debug-phase: new rev 0:  x -> 0
  test-debug-phase: new rev 1:  x -> 0
  test-debug-phase: new rev 2:  x -> 0
  test-debug-phase: new rev 3:  x -> 0
  test-debug-phase: new rev 4:  x -> 0
  test-debug-phase: new rev 5:  x -> 0
  test-debug-phase: new rev 6:  x -> 0
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> public
  test-hook-close-phase: 27547f69f25460a52fff66ad004e58da7ad3fb56:   -> public
  test-hook-close-phase: f838bfaca5c7226600ebcfd84f3c3c13a28d3757:   -> public
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:   -> public
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:   -> public
  test-hook-close-phase: cf9fe039dfd67e829edf6522a45de057b5c86519:   -> public
  test-hook-close-phase: 17a481b3bccb796c0521ae97903d81c52bfee4af:   -> public
  updating to branch default
  6 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd clonewithobs
  $ hg log -G --template "{rev} {phase} {desc}\n"
  @    6 public merge B' and E
  |\
  | o  5 public B'
  | |
  o |  4 public E
  | |
  o |  3 public D
  | |
  o |  2 public C
  |/
  o  1 public B
  |
  o  0 public A
  

test verify repo containing hidden changesets, which should not abort just
because repo.cancopy() is False

  $ cd ../initialrepo
  $ hg verify
  checking changesets
  checking manifests
  crosschecking files in changesets and manifests
  checking files
  checked 8 changesets with 7 changes to 7 files

  $ cd ..

check whether HG_PENDING makes pending changes only in related
repositories visible to an external hook.

(emulate a transaction running concurrently by copied
.hg/phaseroots.pending in subsequent test)

  $ cat > $TESTTMP/savepending.sh <<EOF
  > cp .hg/store/phaseroots.pending  .hg/store/phaseroots.pending.saved
  > exit 1 # to avoid changing phase for subsequent tests
  > EOF
  $ cd push-dest
  $ hg phase 6
  6: draft
  $ hg --config hooks.pretxnclose="sh $TESTTMP/savepending.sh" phase -f -s 6
  transaction abort!
  rollback completed
  abort: pretxnclose hook exited with status 1
  [255]
  $ cp .hg/store/phaseroots.pending.saved .hg/store/phaseroots.pending

(check (in)visibility of phaseroot while transaction running in repo)

  $ cat > $TESTTMP/checkpending.sh <<EOF
  > echo '@initialrepo'
  > hg -R "$TESTTMP/initialrepo" phase 7
  > echo '@push-dest'
  > hg -R "$TESTTMP/push-dest" phase 6
  > exit 1 # to avoid changing phase for subsequent tests
  > EOF
  $ cd ../initialrepo
  $ hg phase 7
  7: public
  $ hg --config hooks.pretxnclose="sh $TESTTMP/checkpending.sh" phase -f -s 7
  @initialrepo
  7: secret
  @push-dest
  6: draft
  transaction abort!
  rollback completed
  abort: pretxnclose hook exited with status 1
  [255]

Check that pretxnclose-phase hook can control phase movement

  $ hg phase --force b3325c91a4d9 --secret
  test-debug-phase: move rev 3: 0 -> 2
  test-debug-phase: move rev 4: 0 -> 2
  test-debug-phase: move rev 5: 1 -> 2
  test-debug-phase: move rev 7: 0 -> 2
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:  public -> secret
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:  public -> secret
  test-hook-close-phase: a030c6be5127abc010fcbff1851536552e6951a8:  draft -> secret
  test-hook-close-phase: 17a481b3bccb796c0521ae97903d81c52bfee4af:  public -> secret
  $ hg log -G -T phases
  @    changeset:   7:17a481b3bccb
  |\   tag:         tip
  | |  phase:       secret
  | |  parent:      6:cf9fe039dfd6
  | |  parent:      4:a603bfb5a83e
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     merge B' and E
  | |
  | o  changeset:   6:cf9fe039dfd6
  | |  phase:       public
  | |  parent:      1:27547f69f254
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     B'
  | |
  o |  changeset:   4:a603bfb5a83e
  | |  phase:       secret
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     E
  | |
  o |  changeset:   3:b3325c91a4d9
  | |  phase:       secret
  | |  user:        test
  | |  date:        Thu Jan 01 00:00:00 1970 +0000
  | |  summary:     D
  | |
  o |  changeset:   2:f838bfaca5c7
  |/   phase:       public
  |    user:        test
  |    date:        Thu Jan 01 00:00:00 1970 +0000
  |    summary:     C
  |
  o  changeset:   1:27547f69f254
  |  phase:       public
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     B
  |
  o  changeset:   0:4a2df7238c3b
     phase:       public
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A
  

Install a hook that prevent b3325c91a4d9 to become public

  $ cat >> .hg/hgrc << EOF
  > [hooks]
  > pretxnclose-phase.nopublish_D = sh -c "(echo \$HG_NODE| grep -v b3325c91a4d9>/dev/null) || [ 'public' != \$HG_PHASE ]"
  > EOF

Try various actions. only the draft move should succeed

  $ hg phase --public b3325c91a4d9
  transaction abort!
  rollback completed
  abort: pretxnclose-phase.nopublish_D hook exited with status 1
  [255]
  $ hg phase --public a603bfb5a83e
  transaction abort!
  rollback completed
  abort: pretxnclose-phase.nopublish_D hook exited with status 1
  [255]
  $ hg phase --draft 17a481b3bccb
  test-debug-phase: move rev 3: 2 -> 1
  test-debug-phase: move rev 4: 2 -> 1
  test-debug-phase: move rev 7: 2 -> 1
  test-hook-close-phase: b3325c91a4d916bcc4cdc83ea3fe4ece46a42f6e:  secret -> draft
  test-hook-close-phase: a603bfb5a83e312131cebcd05353c217d4d21dde:  secret -> draft
  test-hook-close-phase: 17a481b3bccb796c0521ae97903d81c52bfee4af:  secret -> draft
  $ hg phase --public 17a481b3bccb
  transaction abort!
  rollback completed
  abort: pretxnclose-phase.nopublish_D hook exited with status 1
  [255]

  $ cd ..

Test for the "internal" phase
=============================

Check we deny its usage on older repository

  $ hg init no-internal-phase --config format.internal-phase=no
  $ cd no-internal-phase
  $ cat .hg/requires
  dotencode
  fncache
  generaldelta
  revlogv1
  store
  $ echo X > X
  $ hg add X
  $ hg status
  A X
  $ hg --config "phases.new-commit=internal" commit -m "my test internal commit" 2>&1 | grep ProgrammingError
  ** ProgrammingError: this repository does not support the internal phase
      raise error.ProgrammingError(msg)
  mercurial.error.ProgrammingError: this repository does not support the internal phase

  $ cd ..

Check it works fine with repository that supports it.

  $ hg init internal-phase --config format.internal-phase=yes
  $ cd internal-phase
  $ cat .hg/requires
  dotencode
  fncache
  generaldelta
  internal-phase
  revlogv1
  store
  $ mkcommit A
  test-debug-phase: new rev 0:  x -> 1
  test-hook-close-phase: 4a2df7238c3b48766b5e22fafbb8a2f506ec8256:   -> draft

Commit an internal changesets

  $ echo B > B
  $ hg add B
  $ hg status
  A B
  $ hg --config "phases.new-commit=internal" commit -m "my test internal commit"
  test-debug-phase: new rev 1:  x -> 96
  test-hook-close-phase: c01c42dffc7f81223397e99652a0703f83e1c5ea:   -> internal

Usual visibility rules apply when working directory parents

  $ hg log -G -l 3
  @  changeset:   1:c01c42dffc7f
  |  tag:         tip
  |  user:        test
  |  date:        Thu Jan 01 00:00:00 1970 +0000
  |  summary:     my test internal commit
  |
  o  changeset:   0:4a2df7238c3b
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A
  

Commit is hidden as expected

  $ hg up 0
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ hg log -G
  @  changeset:   0:4a2df7238c3b
     tag:         tip
     user:        test
     date:        Thu Jan 01 00:00:00 1970 +0000
     summary:     A