view tests/test-rebase-named-branches.t @ 24787:9d5c27890790

largefiles: for update -C, only update largefiles when necessary

Before, a --clean update with largefiles would use the "optimization" that it
didn't read hashes from standin files before and after the update. Instead of
trusting the content of the standin files, it would rehash all the actual
largefiles that lfdirstate reported clean and update the standins that didn't
have the expected content. It could thus in some "impossible" situations
automatically recover from some "largefile got out sync with its standin"
issues (even there apparently still were weird corner cases where it could
fail). This extra checking is similar to what core --clean intentionally do
not do, and it made update --clean unbearable slow.

Usually in core Mercurial, --clean will rely on the dirstate to find the files
it should update. (It is thus intentionally possible (when trying to trick the
system or if there should be bugs) to end up in situations where --clean not
will restore the working directory content correctly.) Checking every file when
we "know" it is ok is however not an option - that would be too slow.

Instead, trust the content of the standin files. Use the same logic for --clean
as for linear updates and trust the dirstate and that our "logic" will keep
them in sync. It is much cheaper to just rehash the largefiles reported dirty
by a status walk and read all standins than to hash largefiles.

Most of the changes are just a change of indentation now when the different
kinds of updates no longer are handled that differently. Standins for added
files are however only written when doing a normal update, while deleted and
removed files only will be updated for --clean updates.

  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > rebase=
  > 
  > [phases]
  > publish=False
  > 
  > [alias]
  > tglog = log -G --template "{rev}: '{desc}' {branches}\n"
  > EOF

  $ hg init a
  $ cd a
  $ hg unbundle "$TESTDIR/bundles/rebase.hg"
  adding changesets
  adding manifests
  adding file changes
  added 8 changesets with 7 changes to 7 files (+2 heads)
  (run 'hg heads' to see heads, 'hg merge' to merge)
  $ hg up tip
  3 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd ..

  $ hg clone -q -u . a a1

  $ cd a1

  $ hg update 3
  3 files updated, 0 files merged, 2 files removed, 0 files unresolved
  $ hg branch dev-one
  marked working directory as branch dev-one
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci -m 'dev-one named branch'

  $ hg update 7
  2 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg branch dev-two
  marked working directory as branch dev-two
  (branches are permanent and global, did you want a bookmark?)

  $ echo x > x

  $ hg add x

  $ hg ci -m 'dev-two named branch'

  $ hg tglog
  @  9: 'dev-two named branch' dev-two
  |
  | o  8: 'dev-one named branch' dev-one
  | |
  o |  7: 'H'
  | |
  +---o  6: 'G'
  | | |
  o | |  5: 'F'
  | | |
  +---o  4: 'E'
  | |
  | o  3: 'D'
  | |
  | o  2: 'C'
  | |
  | o  1: 'B'
  |/
  o  0: 'A'
  

Branch name containing a dash (issue3181)

  $ hg rebase -b dev-two -d dev-one --keepbranches
  rebasing 5:24b6387c8c8c "F"
  rebasing 6:eea13746799a "G"
  rebasing 7:02de42196ebe "H"
  rebasing 9:cb039b7cae8e "dev-two named branch" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/24b6387c8c8c-24cb8001-backup.hg (glob)

  $ hg tglog
  @  9: 'dev-two named branch' dev-two
  |
  o  8: 'H'
  |
  | o  7: 'G'
  |/|
  o |  6: 'F'
  | |
  o |  5: 'dev-one named branch' dev-one
  | |
  | o  4: 'E'
  | |
  o |  3: 'D'
  | |
  o |  2: 'C'
  | |
  o |  1: 'B'
  |/
  o  0: 'A'
  
  $ hg rebase -s dev-one -d 0 --keepbranches
  rebasing 5:643fc9128048 "dev-one named branch"
  note: rebase of 5:643fc9128048 created no changes to commit
  rebasing 6:24de4aff8e28 "F"
  rebasing 7:4b988a958030 "G"
  rebasing 8:31d0e4ba75e6 "H"
  rebasing 9:9e70cd31750f "dev-two named branch" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/643fc9128048-c4ee9ef5-backup.hg (glob)

  $ hg tglog
  @  8: 'dev-two named branch' dev-two
  |
  o  7: 'H'
  |
  | o  6: 'G'
  |/|
  o |  5: 'F'
  | |
  | o  4: 'E'
  |/
  | o  3: 'D'
  | |
  | o  2: 'C'
  | |
  | o  1: 'B'
  |/
  o  0: 'A'
  
  $ hg update 3
  3 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg branch dev-one
  marked working directory as branch dev-one
  (branches are permanent and global, did you want a bookmark?)
  $ hg ci -m 'dev-one named branch'

  $ hg tglog
  @  9: 'dev-one named branch' dev-one
  |
  | o  8: 'dev-two named branch' dev-two
  | |
  | o  7: 'H'
  | |
  | | o  6: 'G'
  | |/|
  | o |  5: 'F'
  | | |
  | | o  4: 'E'
  | |/
  o |  3: 'D'
  | |
  o |  2: 'C'
  | |
  o |  1: 'B'
  |/
  o  0: 'A'
  
  $ hg rebase -b 'max(branch("dev-two"))' -d dev-one --keepbranches
  rebasing 5:77854864208c "F"
  rebasing 6:63b4f9c788a1 "G"
  rebasing 7:87861e68abd3 "H"
  rebasing 8:ec00d4e0efca "dev-two named branch"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/77854864208c-74d59436-backup.hg (glob)

  $ hg tglog
  o  9: 'dev-two named branch' dev-two
  |
  o  8: 'H'
  |
  | o  7: 'G'
  |/|
  o |  6: 'F'
  | |
  @ |  5: 'dev-one named branch' dev-one
  | |
  | o  4: 'E'
  | |
  o |  3: 'D'
  | |
  o |  2: 'C'
  | |
  o |  1: 'B'
  |/
  o  0: 'A'
  
  $ hg rebase -s 'max(branch("dev-one"))' -d 0 --keepbranches
  rebasing 5:643fc9128048 "dev-one named branch"
  note: rebase of 5:643fc9128048 created no changes to commit
  rebasing 6:05584c618d45 "F"
  rebasing 7:471695f5257d "G"
  rebasing 8:8382a539a2df "H"
  rebasing 9:11f718458b32 "dev-two named branch" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/643fc9128048-177f3c5c-backup.hg (glob)

  $ hg tglog
  o  8: 'dev-two named branch' dev-two
  |
  o  7: 'H'
  |
  | o  6: 'G'
  |/|
  o |  5: 'F'
  | |
  | o  4: 'E'
  |/
  | o  3: 'D'
  | |
  | o  2: 'C'
  | |
  | o  1: 'B'
  |/
  @  0: 'A'
  

Rebasing descendant onto ancestor across different named branches

  $ hg rebase -s 1 -d 8 --keepbranches
  rebasing 1:42ccdea3bb16 "B"
  rebasing 2:5fddd98957c8 "C"
  rebasing 3:32af7686d403 "D"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-backup.hg (glob)

  $ hg tglog
  o  8: 'D'
  |
  o  7: 'C'
  |
  o  6: 'B'
  |
  o  5: 'dev-two named branch' dev-two
  |
  o  4: 'H'
  |
  | o  3: 'G'
  |/|
  o |  2: 'F'
  | |
  | o  1: 'E'
  |/
  @  0: 'A'
  
  $ hg rebase -s 4 -d 5
  abort: source is ancestor of destination
  [255]

  $ hg rebase -s 5 -d 4
  rebasing 5:32d3b0de7f37 "dev-two named branch"
  rebasing 6:580fcd9fd48f "B"
  rebasing 7:32aba0402ed2 "C"
  rebasing 8:e4787b575338 "D" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/32d3b0de7f37-c37815ca-backup.hg (glob)

  $ hg tglog
  o  8: 'D'
  |
  o  7: 'C'
  |
  o  6: 'B'
  |
  o  5: 'dev-two named branch'
  |
  o  4: 'H'
  |
  | o  3: 'G'
  |/|
  o |  2: 'F'
  | |
  | o  1: 'E'
  |/
  @  0: 'A'
  

Reopen branch by rebase

  $ hg up -qr3
  $ hg branch -q b
  $ hg ci -m 'create b'
  $ hg ci -m 'close b' --close
  $ hg rebase -b 8 -d b
  reopening closed branch head ea9de14a36c6
  rebasing 4:86693275b2ef "H"
  rebasing 5:2149726d0970 "dev-two named branch"
  rebasing 6:81e55225e95d "B"
  rebasing 7:09eda3dc3195 "C"
  rebasing 8:31298fc9d159 "D"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/86693275b2ef-f9fcf4e2-backup.hg (glob)

  $ cd ..

Rebase to other head on branch

Set up a case:

  $ hg init case1
  $ cd case1
  $ touch f
  $ hg ci -qAm0
  $ hg branch -q b
  $ echo >> f
  $ hg ci -qAm 'b1'
  $ hg up -qr -2
  $ hg branch -qf b
  $ hg ci -qm 'b2'
  $ hg up -qr -3
  $ hg branch -q c
  $ hg ci -m 'c1'

  $ hg tglog
  @  3: 'c1' c
  |
  | o  2: 'b2' b
  |/
  | o  1: 'b1' b
  |/
  o  0: '0'
  
  $ hg clone -q . ../case2

rebase 'b2' to another lower branch head

  $ hg up -qr 2
  $ hg rebase
  nothing to rebase - working directory parent is also destination
  [1]
  $ hg tglog
  o  3: 'c1' c
  |
  | @  2: 'b2' b
  |/
  | o  1: 'b1' b
  |/
  o  0: '0'
  

rebase 'b1' on top of the tip of the branch ('b2') - ignoring the tip branch ('c1')

  $ cd ../case2
  $ hg up -qr 1
  $ hg rebase
  rebasing 1:40039acb7ca5 "b1"
  saved backup bundle to $TESTTMP/case2/.hg/strip-backup/40039acb7ca5-342b72d1-backup.hg (glob)
  $ hg tglog
  @  3: 'b1' b
  |
  | o  2: 'c1' c
  | |
  o |  1: 'b2' b
  |/
  o  0: '0'
  

rebase 'c1' to the branch head 'c2' that is closed

  $ hg branch -qf c
  $ hg ci -qm 'c2 closed' --close
  $ hg up -qr 2
  $ hg tglog
  _  4: 'c2 closed' c
  |
  o  3: 'b1' b
  |
  | @  2: 'c1' c
  | |
  o |  1: 'b2' b
  |/
  o  0: '0'
  
  $ hg rebase
  nothing to rebase - working directory parent is also destination
  [1]
  $ hg tglog
  _  4: 'c2 closed' c
  |
  o  3: 'b1' b
  |
  | @  2: 'c1' c
  | |
  o |  1: 'b2' b
  |/
  o  0: '0'
  

  $ cd ..