view tests/test-bundle2.t @ 20835:0e8417131a29

util: add the code path to "cachefunc()" for the function taking no arguments

Before this patch, "util.cachefunc()" caches the value returned by the
specified function into dictionary "cache", even if the specified
function takes no arguments.

In such case, "cache" has at most one entry, and distinction between
entries in "cache" is meaningless.

This patch adds the code path to "cachefunc()" for the function taking
no arguments for efficiency: to store only one cached value, using
list "cache" is a little faster than using dictionary "cache".

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)
  > 
  > @command('bundle2',
  >          [('', 'param', [], 'stream level parameter'),],
  >          '')
  > def cmdbundle2(ui, repo, **opts):
  >     """write a bundle2 container on standard ouput"""
  >     bundler = bundle2.bundle20()
  >     for p in opts['param']:
  >         p = p.split('=', 1)
  >         try:
  >             bundler.addparam(*p)
  >         except ValueError, exc:
  >             raise util.Abort('%s' % exc)
  > 
  >     for chunk in bundler.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))
  >     for key in sorted(unbundler.params):
  >         ui.write('- %s\n' % key)
  >         value = unbundler.params[key]
  >         if value is not None:
  >             ui.write('    %s\n' % value)
  >     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
  $ 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 unbundle2
  options count: 0
  parts count:   0

Test old style bundle are detected and refused

  $ hg bundle --all ../bundle.hg
  1 changesets found
  $ hg unbundle2 < ../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 unbundle2
  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 unbundle2
  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 unbundle2
  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 unbundle2
  options count: 2
  - e|! 7/
      babar%#==tutu
  - simple
  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]