view tests/test-bundle2.t @ 20802:520df53ad26a

bundle2: a very first version of bundle2 unbundler

This changeset introduce an unbundler class to match the bundle2 bundler. It is
currently able to unbundle an empty bundle2 only and will gain more feature at
the same pace than the bundler.

It also comes with its special extension command in test.

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 bundle2
  > cmdtable = {}
  > command = cmdutil.command(cmdtable)
  > 
  > @command('bundle2', [], '')
  > def cmdbundle2(ui, repo):
  >     """write a bundle2 container on standard ouput"""
  >     bundle = bundle2.bundle20()
  >     for chunk in bundle.getchunks():
  >         ui.write(chunk)
  > 
  > @command('unbundle2', [], '')
  > def cmdunbundle2(ui, repo):
  >     """read a bundle2 container from standard input"""
  >     unbundler = bundle2.unbundle20(sys.stdin)
  >     ui.write('options count: %i\n' % len(unbundler.params))
  >     parts = list(unbundler)
  >     ui.write('parts count:   %i\n' % len(parts))
  > EOF
  $ cat >> $HGRCPATH << EOF
  > [extensions]
  > bundle2=$TESTTMP/bundle2.py
  > EOF

The extension requires a repo (currently unused)

  $ hg init main
  $ cd main

Test simple generation of empty bundle

  $ hg bundle2
  HG20\x00\x00\x00\x00 (no-eol) (esc)

Test parsing of an empty bundle

  $ hg bundle2 | hg unbundle2
  options count: 0
  parts count:   0