Create an extension to test bundle2 API

  $ cat > bundle2.py << EOF

  > """A small extension to test bundle2 implementation

  > 

  > Current bundle2 implementation is far too limited to be used in any core

  > code. We still need to be able to test it while it grow up.

  > """

  > 

  > import sys

  > from mercurial import cmdutil

  > from mercurial import util

  > from mercurial import bundle2

  > cmdtable = {}

  > command = cmdutil.command(cmdtable)

  > 

  > ELEPHANTSSONG = """Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko

  > Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko

  > Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko."""

  > assert len(ELEPHANTSSONG) == 178 # future test say 178 bytes, trust it.

  > 

  > @bundle2.parthandler('test:song')

  > def songhandler(repo, part):

  >     """handle a "test:song" bundle2 part, printing the lyrics on stdin"""

  >     repo.ui.write('The choir start singing:\n')

  >     for line in part.data.split('\n'):

  >         repo.ui.write('    %s\n' % line)

  > 

  > @command('bundle2',

  >          [('', 'param', [], 'stream level parameter'),

  >           ('', 'unknown', False, 'include an unknown mandatory part in the bundle'),

  >           ('', 'parts', False, 'include some arbitrary parts to the bundle'),],

  >          '[OUTPUTFILE]')

  > def cmdbundle2(ui, repo, path=None, **opts):

  >     """write a bundle2 container on standard ouput"""

  >     bundler = bundle2.bundle20(ui)

  >     for p in opts['param']:

  >         p = p.split('=', 1)

  >         try:

  >             bundler.addparam(*p)

  >         except ValueError, exc:

  >             raise util.Abort('%s' % exc)

  > 

  >     if opts['parts']:

  >        part = bundle2.part('test:empty')

  >        bundler.addpart(part)

  >        # add a second one to make sure we handle multiple parts

  >        part = bundle2.part('test:empty')

  >        bundler.addpart(part)

  >        part = bundle2.part('test:song', data=ELEPHANTSSONG)

  >        bundler.addpart(part)

  >        part = bundle2.part('test:math',

  >                            [('pi', '3.14'), ('e', '2.72')],

  >                            [('cooking', 'raw')],

  >                            '42')

  >        bundler.addpart(part)

  >     if opts['unknown']:

  >        part = bundle2.part('test:UNKNOWN',

  >                            data='some random content')

  >        bundler.addpart(part)

  > 

  >     if path is None:

  >        file = sys.stdout

  >     else:

  >         file = open(path, 'w')

  > 

  >     for chunk in bundler.getchunks():

  >         file.write(chunk)

  > 

  > @command('unbundle2', [], '')

  > def cmdunbundle2(ui, repo):

  >     """process a bundle2 stream from stdin on the current repo"""

  >     try:

  >         lock = repo.lock()

  >         try:

  >         except KeyError, exc:

  >             raise util.Abort('missing support for %s' % exc)

  >     finally:

  >         lock.release()

  >         remains = sys.stdin.read()

  >         ui.write('%i unread bytes\n' % len(remains))

  > 

  > @command('statbundle2', [], '')

  > def cmdstatbundle2(ui, repo):

  >     """print statistic on the bundle2 container read from stdin"""

  >     unbundler = bundle2.unbundle20(ui, sys.stdin)

  >     try:

  >         params = unbundler.params

  >     except KeyError, exc:

  >        raise util.Abort('unknown parameters: %s' % exc)

  >     ui.write('options count: %i\n' % len(params))

  >     for key in sorted(params):

  >         ui.write('- %s\n' % key)

  >         value = params[key]

  >         if value is not None:

  >             ui.write('    %s\n' % value)

  >     parts = list(unbundler)

  >     ui.write('parts count:   %i\n' % len(parts))

  >     for p in parts:

  >         ui.write('  :%s:\n' % p.type)

  >         ui.write('    mandatory: %i\n' % len(p.mandatoryparams))

  >         ui.write('    advisory: %i\n' % len(p.advisoryparams))

  >         ui.write('    payload: %i bytes\n' % len(p.data))

  > EOF

  $ cat >> $HGRCPATH << EOF

  > [extensions]

  > bundle2=$TESTTMP/bundle2.py

  > EOF

The extension requires a repo (currently unused)

  $ hg init main

  $ cd main

  $ touch a

  $ hg add a

  $ hg commit -m 'a'

Empty bundle

=================

- no option

- no parts

Test bundling

  $ hg bundle2

  HG20\x00\x00\x00\x00 (no-eol) (esc)

Test unbundling

  $ hg bundle2 | hg statbundle2

  options count: 0

  parts count:   0

Test old style bundle are detected and refused

  $ hg bundle --all ../bundle.hg

  1 changesets found

  $ hg statbundle2 < ../bundle.hg

  abort: unknown bundle version 10

  [255]

Test parameters

=================

- some options

- no parts

advisory parameters, no value

-------------------------------

Simplest possible parameters form

Test generation simple option

  $ hg bundle2 --param 'caution'

  HG20\x00\x07caution\x00\x00 (no-eol) (esc)

Test unbundling

  $ hg bundle2 --param 'caution' | hg statbundle2

  options count: 1

  - caution

  parts count:   0

Test generation multiple option

  $ hg bundle2 --param 'caution' --param 'meal'

  HG20\x00\x0ccaution meal\x00\x00 (no-eol) (esc)

Test unbundling

  $ hg bundle2 --param 'caution' --param 'meal' | hg statbundle2

  options count: 2

  - caution

  - meal

  parts count:   0

advisory parameters, with value

-------------------------------

Test generation

  $ hg bundle2 --param 'caution' --param 'meal=vegan' --param 'elephants'

  HG20\x00\x1ccaution meal=vegan elephants\x00\x00 (no-eol) (esc)

Test unbundling

  $ hg bundle2 --param 'caution' --param 'meal=vegan' --param 'elephants' | hg statbundle2

  options count: 3

  - caution

  - elephants

  - meal

      vegan

  parts count:   0

parameter with special char in value

---------------------------------------------------

Test generation

  $ hg bundle2 --param 'e|! 7/=babar%#==tutu' --param simple

  HG20\x00)e%7C%21%207/=babar%25%23%3D%3Dtutu simple\x00\x00 (no-eol) (esc)

Test unbundling

  $ hg bundle2 --param 'e|! 7/=babar%#==tutu' --param simple | hg statbundle2

  options count: 2

  - e|! 7/

      babar%#==tutu

  - simple

  parts count:   0

Test unknown mandatory option

---------------------------------------------------

  $ hg bundle2 --param 'Gravity' | hg statbundle2

  abort: unknown parameters: 'Gravity'

  [255]

Test debug output

---------------------------------------------------

bundling debug

  $ hg bundle2 --debug --param 'e|! 7/=babar%#==tutu' --param simple ../out.hg2

  start emission of HG20 stream

  bundle parameter: e%7C%21%207/=babar%25%23%3D%3Dtutu simple

  start of parts

  end of bundle

file content is ok

  $ cat ../out.hg2

  HG20\x00)e%7C%21%207/=babar%25%23%3D%3Dtutu simple\x00\x00 (no-eol) (esc)

unbundling debug

  $ hg statbundle2 --debug < ../out.hg2

  start processing of HG20 stream

  reading bundle2 stream parameters

  ignoring unknown parameter 'e|! 7/'

  ignoring unknown parameter 'simple'

  options count: 2

  - e|! 7/

      babar%#==tutu

  - simple

  start extraction of bundle2 parts

  part header size: 0

  end of bundle2 stream

  parts count:   0

Test buggy input

---------------------------------------------------

empty parameter name

  $ hg bundle2 --param '' --quiet

  abort: empty parameter name

  [255]

bad parameter name

  $ hg bundle2 --param 42babar

  abort: non letter first character: '42babar'

  [255]

Test part

=================

  $ hg bundle2 --parts ../parts.hg2 --debug

  start emission of HG20 stream

  bundle parameter: 

  start of parts

  bundle part: "test:empty"

  bundle part: "test:empty"

  bundle part: "test:song"

  bundle part: "test:math"

  end of bundle

  $ cat ../parts.hg2

  HG20\x00\x00\x00\r (esc)

  test:empty\x00\x00\x00\x00\x00\x00\x00\r (esc)

  test:empty\x00\x00\x00\x00\x00\x00\x00\x0c	test:song\x00\x00\x00\x00\x00\xb2Patali Dirapata, Cromda Cromda Ripalo, Pata Pata, Ko Ko Ko (esc)

  Bokoro Dipoulito, Rondi Rondi Pepino, Pata Pata, Ko Ko Ko

  Emana Karassoli, Loucra Loucra Ponponto, Pata Pata, Ko Ko Ko.\x00\x00\x00\x00\x00'	test:math\x02\x01\x02\x04\x01\x04\x07\x03pi3.14e2.72cookingraw\x00\x00\x00\x0242\x00\x00\x00\x00\x00\x00 (no-eol) (esc)

  $ hg statbundle2 < ../parts.hg2

  options count: 0

  parts count:   4

    :test:empty:

      mandatory: 0

      advisory: 0

      payload: 0 bytes

    :test:empty:

      mandatory: 0

      advisory: 0

      payload: 0 bytes

    :test:song:

      mandatory: 0

      advisory: 0

      payload: 178 bytes

    :test:math:

      mandatory: 2

      advisory: 1

      payload: 2 bytes

  $ hg statbundle2 --debug < ../parts.hg2

  start processing of HG20 stream

  reading bundle2 stream parameters

  options count: 0

  start extraction of bundle2 parts

  part header size: 13

  part type: "test:empty"

  part parameters: 0

  payload chunk size: 0

  part header size: 13

  part type: "test:empty"

  part parameters: 0

  payload chunk size: 0

  part header size: 12

  part type: "test:song"

  part parameters: 0

  payload chunk size: 178

  payload chunk size: 0

  part header size: 39

  part type: "test:math"

  part parameters: 3

  payload chunk size: 2

  payload chunk size: 0

  part header size: 0

  end of bundle2 stream

  parts count:   4

    :test:empty:

      mandatory: 0

      advisory: 0

      payload: 0 bytes

    :test:empty:

      mandatory: 0

      advisory: 0

      payload: 0 bytes

    :test:song:

      mandatory: 0

      advisory: 0

      payload: 178 bytes

    :test:math:

      mandatory: 2

      advisory: 1

      payload: 2 bytes

Test actual unbundling

========================

Process the bundle

  $ hg unbundle2 --debug < ../parts.hg2

  start processing of HG20 stream

  reading bundle2 stream parameters

  start extraction of bundle2 parts

  part header size: 13

  part type: "test:empty"

  part parameters: 0

  payload chunk size: 0

  ignoring unknown advisory part 'test:empty'

  part header size: 13

  part type: "test:empty"

  part parameters: 0

  payload chunk size: 0

  ignoring unknown advisory part 'test:empty'

  part header size: 12

  part type: "test:song"

  part parameters: 0

  payload chunk size: 178