$ hg init a

  $ cd a

Verify checking branch of nullrev before the cache is created doesnt crash

  $ hg log -r 'branch(.)' -T '{branch}\n'

Basic test

  $ echo 'root' >root

  $ hg add root

  $ hg commit -d '0 0' -m "Adding root node"

  $ echo 'a' >a

  $ hg add a

  $ hg branch a

  marked working directory as branch a

  (branches are permanent and global, did you want a bookmark?)

  $ hg commit -d '1 0' -m "Adding a branch"

  $ hg branch q

  marked working directory as branch q

  $ echo 'aa' >a

  $ hg branch -C

  reset working directory to branch a

  $ hg commit -d '2 0' -m "Adding to a branch"

  $ hg update -C 0

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

  $ echo 'b' >b

  $ hg add b

  $ hg branch b

  marked working directory as branch b

  $ hg commit -d '2 0' -m "Adding b branch"

  $ echo 'bh1' >bh1

  $ hg add bh1

  $ hg commit -d '3 0' -m "Adding b branch head 1"

  $ hg update -C 2

  1 files updated, 0 files merged, 2 files removed, 0 files unresolved

  $ echo 'bh2' >bh2

  $ hg add bh2

  $ hg commit -d '4 0' -m "Adding b branch head 2"

  $ echo 'c' >c

  $ hg add c

  $ hg branch c

  marked working directory as branch c

  $ hg commit -d '5 0' -m "Adding c branch"

reserved names

  $ hg branch tip

  abort: the name 'tip' is reserved

  [10]

  $ hg branch null

  abort: the name 'null' is reserved

  [10]

  $ hg branch .

  abort: the name '.' is reserved

  [10]

invalid characters

  $ hg branch 'foo:bar'

  abort: ':' cannot be used in a name

  [10]

  $ hg branch 'foo

  > bar'

  abort: '\n' cannot be used in a name

  [10]

trailing or leading spaces should be stripped before testing duplicates

  $ hg branch 'b '

  abort: a branch of the same name already exists

  (use 'hg update' to switch to it)

  [10]

  $ hg branch ' b'

  abort: a branch of the same name already exists

  (use 'hg update' to switch to it)

  [10]

verify update will accept invalid legacy branch names

  $ hg init test-invalid-branch-name

  $ cd test-invalid-branch-name

  $ hg unbundle -u "$TESTDIR"/bundles/test-invalid-branch-name.hg

  adding changesets

  adding manifests

  adding file changes

  added 3 changesets with 3 changes to 2 files

  new changesets f0e4c7f04036:33c2ceb9310b (3 drafts)

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

  $ hg update '"colon:test"'

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

  $ cd ..

  $ echo 'd' >d

  $ hg add d

  $ hg branch 'a branch name much longer than the default justification used by branches'

  marked working directory as branch a branch name much longer than the default justification used by branches

  $ hg commit -d '6 0' -m "Adding d branch"

  $ hg branches

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  b                              4:aee39cd168d0

  c                              6:589736a22561 (inactive)

  a                              5:d8cbc61dbaa6 (inactive)

  default                        0:19709c5a4e75 (inactive)

-------

  $ hg branches -a

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  b                              4:aee39cd168d0

--- Branch a

  $ hg log -b a

  changeset:   5:d8cbc61dbaa6

  branch:      a

  parent:      2:881fe2b92ad0

  user:        test

  date:        Thu Jan 01 00:00:04 1970 +0000

  summary:     Adding b branch head 2

  changeset:   2:881fe2b92ad0

  branch:      a

  user:        test

  date:        Thu Jan 01 00:00:02 1970 +0000

  summary:     Adding to a branch

  changeset:   1:dd6b440dd85a

  branch:      a

  user:        test

  date:        Thu Jan 01 00:00:01 1970 +0000

  summary:     Adding a branch

---- Branch b

  $ hg log -b b

  changeset:   4:aee39cd168d0

  branch:      b

  user:        test

  date:        Thu Jan 01 00:00:03 1970 +0000

  summary:     Adding b branch head 1

  changeset:   3:ac22033332d1

  branch:      b

  parent:      0:19709c5a4e75

  user:        test

  date:        Thu Jan 01 00:00:02 1970 +0000

  summary:     Adding b branch

---- going to test branch listing by rev

  $ hg branches -r0

  default                        0:19709c5a4e75 (inactive)

  $ hg branches -qr0

  default

--- now more than one rev

  $ hg branches -r2:5

  b                              4:aee39cd168d0

  a                              5:d8cbc61dbaa6 (inactive)

  $ hg branches -qr2:5

  b

  a

---- going to test branch closing

  $ hg branches

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  b                              4:aee39cd168d0

  c                              6:589736a22561 (inactive)

  a                              5:d8cbc61dbaa6 (inactive)

  default                        0:19709c5a4e75 (inactive)

  $ hg up -C b

  2 files updated, 0 files merged, 4 files removed, 0 files unresolved

  $ echo 'xxx1' >> b

  $ hg commit -d '7 0' -m 'adding cset to branch b'

  $ hg up -C aee39cd168d0

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

  $ echo 'xxx2' >> b

  $ hg commit -d '8 0' -m 'adding head to branch b'

  created new head

  $ echo 'xxx3' >> b

  $ hg commit -d '9 0' -m 'adding another cset to branch b'

  $ hg branches

  b                             10:bfbe841b666e

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  c                              6:589736a22561 (inactive)

  a                              5:d8cbc61dbaa6 (inactive)

  default                        0:19709c5a4e75 (inactive)

  $ hg heads --closed

  changeset:   10:bfbe841b666e

  branch:      b

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  summary:     adding another cset to branch b

  changeset:   8:eebb944467c9

  branch:      b

  parent:      4:aee39cd168d0

  user:        test

  date:        Thu Jan 01 00:00:07 1970 +0000

  summary:     adding cset to branch b

  changeset:   7:10ff5895aa57

  branch:      a branch name much longer than the default justification used by branches

  user:        test

  date:        Thu Jan 01 00:00:06 1970 +0000

  summary:     Adding d branch

  changeset:   6:589736a22561

  branch:      c

  user:        test

  date:        Thu Jan 01 00:00:05 1970 +0000

  summary:     Adding c branch

  changeset:   5:d8cbc61dbaa6

  branch:      a

  parent:      2:881fe2b92ad0

  user:        test

  date:        Thu Jan 01 00:00:04 1970 +0000

  summary:     Adding b branch head 2

  changeset:   0:19709c5a4e75

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Adding root node

  $ hg heads

  changeset:   10:bfbe841b666e

  branch:      b

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  summary:     adding another cset to branch b

  changeset:   8:eebb944467c9

  branch:      b

  parent:      4:aee39cd168d0

  user:        test

  date:        Thu Jan 01 00:00:07 1970 +0000

  summary:     adding cset to branch b

  changeset:   7:10ff5895aa57

  branch:      a branch name much longer than the default justification used by branches

  user:        test

  date:        Thu Jan 01 00:00:06 1970 +0000

  summary:     Adding d branch

  changeset:   6:589736a22561

  branch:      c

  user:        test

  date:        Thu Jan 01 00:00:05 1970 +0000

  summary:     Adding c branch

  changeset:   5:d8cbc61dbaa6

  branch:      a

  parent:      2:881fe2b92ad0

  user:        test

  date:        Thu Jan 01 00:00:04 1970 +0000

  summary:     Adding b branch head 2

  changeset:   0:19709c5a4e75

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     Adding root node

  $ hg commit -d '9 0' --close-branch -m 'prune bad branch'

  $ hg branches -a

  b                              8:eebb944467c9

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  $ hg up -C b

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

  $ hg commit -d '9 0' --close-branch -m 'close this part branch too'

  $ hg commit -d '9 0' --close-branch -m 're-closing this branch'

  abort: current revision is already a branch closing head

  [10]

  $ hg log -r tip --debug

  changeset:   12:e3d49c0575d8fc2cb1cd6859c747c14f5f6d499f

  branch:      b

  tag:         tip

  phase:       draft

  parent:      8:eebb944467c9fb9651ed232aeaf31b3c0a7fc6c1

  parent:      -1:0000000000000000000000000000000000000000

  manifest:    8:6f9ed32d2b310e391a4f107d5f0f071df785bfee

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  extra:       branch=b

  extra:       close=1

  description:

  close this part branch too

--- b branch should be inactive

  $ hg branches

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  c                              6:589736a22561 (inactive)

  a                              5:d8cbc61dbaa6 (inactive)

  default                        0:19709c5a4e75 (inactive)

  $ hg branches -c

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  b                             12:e3d49c0575d8 (closed)

  c                              6:589736a22561 (inactive)

  a                              5:d8cbc61dbaa6 (inactive)

  default                        0:19709c5a4e75 (inactive)

  $ hg branches -a

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

  $ hg branches -q

  a branch name much longer than the default justification used by branches

  c

  a

  default

  $ hg heads b

  no open branch heads found on branches b

  [1]

  $ hg heads --closed b

  changeset:   12:e3d49c0575d8

  branch:      b

  tag:         tip

  parent:      8:eebb944467c9

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  summary:     close this part branch too

  changeset:   11:d3f163457ebf

  branch:      b

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  summary:     prune bad branch

  $ echo 'xxx4' >> b

  $ hg commit -d '9 0' -m 'reopen branch with a change'

  reopening closed branch head 12

--- branch b is back in action

  $ hg branches -a

  b                             13:e23b5505d1ad

  a branch name much longer than the default justification used by branches 7:10ff5895aa57

---- test heads listings

  $ hg heads

  changeset:   13:e23b5505d1ad

  branch:      b

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:09 1970 +0000

  summary:     reopen branch with a change

  changeset:   7:10ff5895aa57

  branch:      a branch name much longer than the default justification used by branches

  user:        test

  date:        Thu Jan 01 00:00:06 1970 +0000

  summary:     Adding d branch

  changeset:   6:589736a22561