tests/test-convert-cvs-branch.t
author Pierre-Yves David <pierre-yves.david@octobus.net>
Sun, 10 Mar 2019 19:01:56 +0100
changeset 41933 cae3f7e37623
parent 26420 2fc86d92c4a9
child 44722 e5e5ee2b60e4
permissions -rw-r--r--
discovery-helper: use reflink copy if available A reflink copy will copy the files "as usual" but keep using the same data block underneath. This is only supported by "copy on write" file system like btrfs or zfs. This will achieve similar performance that the existing hardlink clone that Mercurial performs with the same initial space saving. However, it will behave better on revlogs start being touch by strip. Instead of duplicating all data in the touched revlogs, only the block actually affected by the strip will be duplicated. This save a lot of space when building many variants of large repositories. The --reflink=always flag make sure the `cp` call fails if reflink copies are not supported. Falling back to local clone.

#require cvs

This is https://bz.mercurial-scm.org/1148
and https://bz.mercurial-scm.org/1447

  $ cvscall()
  > {
  >     cvs -f "$@" > /dev/null
  > }
  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > convert =
  > [convert]
  > cvsps.cache = 0
  > EOF

create cvs repository

  $ mkdir cvsrepo
  $ cd cvsrepo
  $ CVSROOT=`pwd`
  $ export CVSROOT
  $ CVS_OPTIONS=-f
  $ export CVS_OPTIONS
  $ cd ..
  $ rmdir cvsrepo
  $ cvscall -q -d "$CVSROOT" init

Create a new project

  $ mkdir src
  $ cd src
  $ echo "1" > a
  $ echo "1" > b
  $ cvscall import -m "init" src v0 r0 | sort
  $ cd ..
  $ cvscall co src
  cvs checkout: Updating src
  $ cd src

Branch the project

  $ cvscall tag -b BRANCH
  cvs tag: Tagging .
  $ cvscall up -r BRANCH > /dev/null
  cvs update: Updating .

Modify file a, then b, then a

  $ sleep 1
  $ echo "2" > a
  $ cvscall ci -m "mod a"
  cvs commit: Examining .
  $ echo "2" > b
  $ cvscall ci -m "mod b"
  cvs commit: Examining .
  $ sleep 1
  $ echo "3" > a
  $ cvscall ci -m "mod a again"
  cvs commit: Examining .

Convert

  $ cd ..
  $ hg convert src
  assuming destination src-hg
  initializing destination src-hg repository
  connecting to $TESTTMP/cvsrepo
  scanning source...
  collecting CVS rlog
  7 log entries
  creating changesets
  5 changeset entries
  sorting...
  converting...
  4 Initial revision
  3 init
  2 mod a
  1 mod b
  0 mod a again
  updating tags

Check the result

  $ hg -R src-hg log -G --template '{rev} ({branches}) {desc} files: {files}\n'
  o  5 () update tags files: .hgtags
  |
  | o  4 (BRANCH) mod a again files: a
  | |
  | o  3 (BRANCH) mod b files: b
  | |
  | o  2 (BRANCH) mod a files: a
  | |
  | o  1 (v0) init files:
  |/
  o  0 () Initial revision files: a b
  


issue 1447

  $ cvscall()
  > {
  >     cvs -f "$@" > /dev/null
  >     sleep 1
  > }
  $ cvsci()
  > {
  >     cvs -f ci "$@" >/dev/null
  >     sleep 1
  > }
  $ cvscall -Q -d `pwd`/cvsmaster2 init
  $ cd cvsmaster2
  $ CVSROOT=`pwd`
  $ export CVSROOT
  $ mkdir foo
  $ cd ..
  $ cvscall -Q co -d cvswork2 foo
  $ cd cvswork2
  $ echo foo > a.txt
  $ echo bar > b.txt
  $ cvscall -Q add a.txt b.txt
  $ cvsci -m "Initial commit"
  cvs commit: Examining .
  $ echo foo > b.txt
  $ cvsci -m "Fix b on HEAD"
  cvs commit: Examining .
  $ echo bar > a.txt
  $ cvsci -m "Small fix in a on HEAD"
  cvs commit: Examining .
  $ cvscall -Q tag -b BRANCH
  $ cvscall -Q up -P -rBRANCH
  $ echo baz > b.txt
  $ cvsci -m "Change on BRANCH in b"
  cvs commit: Examining .
  $ hg debugcvsps -x --parents foo
  collecting CVS rlog
  5 log entries
  creating changesets
  4 changeset entries
  ---------------------
  PatchSet 1 
  Date: * (glob)
  Author: * (glob)
  Branch: HEAD
  Tag: (none) 
  Log:
  Initial commit
  
  Members: 
  	a.txt:INITIAL->1.1 
  	b.txt:INITIAL->1.1 
  
  ---------------------
  PatchSet 2 
  Date: * (glob)
  Author: * (glob)
  Branch: HEAD
  Tag: (none) 
  Branchpoints: BRANCH 
  Parent: 1
  Log:
  Fix b on HEAD
  
  Members: 
  	b.txt:1.1->1.2 
  
  ---------------------
  PatchSet 3 
  Date: * (glob)
  Author: * (glob)
  Branch: HEAD
  Tag: (none) 
  Branchpoints: BRANCH 
  Parent: 2
  Log:
  Small fix in a on HEAD
  
  Members: 
  	a.txt:1.1->1.2 
  
  ---------------------
  PatchSet 4 
  Date: * (glob)
  Author: * (glob)
  Branch: BRANCH
  Tag: (none) 
  Parent: 3
  Log:
  Change on BRANCH in b
  
  Members: 
  	b.txt:1.2->1.2.2.1 
  

  $ cd ..