view tests/test-rebase-named-branches.t @ 34682:7e3001b74ab3

tersestatus: re-implement the functionality to terse the status

The previous terse status implementation was hacking around os.listdir() and was
flaky. There have been a lot of instances of mercurial buildbots failing
and google's internal builds failing because of the
hacky implementation of terse status. Even though I wrote the last
implementation but it was hard for me to find the reason for the flake.

The new implementation can be slower than the old one but is clean and easy to
understand.

In this we create a node object for each directory and create a tree
like structure starting from the root of the working copy. While building the
tree like structure we store some information on the nodes which will be helpful
for deciding later whether we can terse the dir or not.
Once the whole tree is build we traverse and built the list of files for each
status with required tersing.

There is no behaviour change as the old test, test-status-terse.t passes with
the new implementation.

Differential Revision: https://phab.mercurial-scm.org/D985

  $ 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)
  new changesets cd010b8cd998:02de42196ebe
  (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

  $ 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-rebase.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"
  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-rebase.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 update 3
  3 files updated, 0 files merged, 3 files removed, 0 files unresolved
  $ hg branch -f dev-one
  marked working directory as branch dev-one
  $ hg ci -m 'dev-one named branch'
  created new head

  $ hg tglog
  @  10: 'dev-one named branch' dev-one
  |
  | o  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 -b 'max(branch("dev-two"))' -d dev-one --keepbranches
  rebasing 5:bc8139ee757c "dev-one named branch"
  note: rebase of 5:bc8139ee757c created no changes to commit
  rebasing 6:42aa3cf0fa7a "F"
  rebasing 7:1a1e6f72ec38 "G"
  rebasing 8:904590360559 "H"
  rebasing 9:59c2e59309fe "dev-two named branch"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/bc8139ee757c-f11c1080-rebase.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"
  rebasing 6:679f28760620 "F"
  rebasing 7:549f007a9f5f "G"
  rebasing 8:12b2bc666e20 "H"
  rebasing 9:71325f8bc082 "dev-two named branch" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/643fc9128048-6cdd1a52-rebase.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 up -r 0 > /dev/null

Rebasing descendant onto ancestor across different named branches

  $ hg rebase -s 1 -d 9 --keepbranches
  rebasing 1:42ccdea3bb16 "B"
  rebasing 2:5fddd98957c8 "C"
  rebasing 3:32af7686d403 "D"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/42ccdea3bb16-3cb021d3-rebase.hg (glob)

  $ hg tglog
  o  9: 'D'
  |
  o  8: 'C'
  |
  o  7: 'B'
  |
  o  6: 'dev-two named branch' dev-two
  |
  o  5: 'H'
  |
  | o  4: 'G'
  |/|
  o |  3: 'F'
  | |
  o |  2: 'dev-one named branch' dev-one
  | |
  | o  1: 'E'
  |/
  @  0: 'A'
  
  $ hg rebase -s 5 -d 6
  abort: source and destination form a cycle
  [255]

  $ hg rebase -s 6 -d 5
  rebasing 6:3944801ae4ea "dev-two named branch"
  rebasing 7:3bdb949809d9 "B"
  rebasing 8:a0d543090fa4 "C"
  rebasing 9:e9f862ce8bad "D" (tip)
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/3944801ae4ea-fb46ed74-rebase.hg (glob)

  $ hg tglog
  o  9: 'D'
  |
  o  8: 'C'
  |
  o  7: 'B'
  |
  o  6: 'dev-two named branch'
  |
  o  5: 'H'
  |
  | o  4: 'G'
  |/|
  o |  3: 'F'
  | |
  o |  2: 'dev-one named branch' dev-one
  | |
  | 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 2b586e70108d
  rebasing 5:8e279d293175 "H"
  rebasing 6:c57724c84928 "dev-two named branch"
  rebasing 7:160b0930ccc6 "B"
  rebasing 8:810110211f50 "C"
  rebasing 9:e522577ccdbd "D"
  saved backup bundle to $TESTTMP/a1/.hg/strip-backup/8e279d293175-b023e27c-rebase.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
  rebasing 2:792845bb77ee "b2"
  note: rebase of 2:792845bb77ee created no changes to commit
  saved backup bundle to $TESTTMP/case1/.hg/strip-backup/792845bb77ee-627120ee-rebase.hg (glob)
  $ hg tglog
  o  2: 'c1' c
  |
  | @  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-rebase.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
  abort: branch 'c' has one head - please rebase to an explicit rev
  (run 'hg heads' to see all heads)
  [255]
  $ hg tglog
  _  4: 'c2 closed' c
  |
  o  3: 'b1' b
  |
  | @  2: 'c1' c
  | |
  o |  1: 'b2' b
  |/
  o  0: '0'
  

  $ hg up -cr 1
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg branch x
  marked working directory as branch x
  $ hg rebase -r 3:: -d .
  rebasing 3:76abc1c6f8c7 "b1"
  rebasing 4:8427af5d86f2 "c2 closed" (tip)
  note: rebase of 4:8427af5d86f2 created no changes to commit
  saved backup bundle to $TESTTMP/case2/.hg/strip-backup/76abc1c6f8c7-cd698d13-rebase.hg (glob)
  $ hg tglog
  o  3: 'b1' x
  |
  | o  2: 'c1' c
  | |
  @ |  1: 'b2' b
  |/
  o  0: '0'
  

  $ cd ..