comparison tests/test-revlog-delta-find.t @ 49767:f1887500f3ec

delta-find: add a `delta-reuse-policy` on configuration `path`

That option allows to control the behavior on a per-path basis, opening the way
to treating pulls from central servers differently than other operations.

49766:152d9c011bcd

  $ hg -R bundle-reuse-disabled debugdata my-file.txt 2 | wc -l
  \s*1001 (re)
  $ hg -R bundle-reuse-disabled debugdata my-file.txt 1 | wc -l
  \s*1200 (re)

49767:f1887500f3ec

  $ hg -R bundle-reuse-disabled debugdata my-file.txt 2 | wc -l
  \s*1001 (re)
  $ hg -R bundle-reuse-disabled debugdata my-file.txt 1 | wc -l
  \s*1200 (re)


Check the path.*:delta-reuse-policy option
==========================================

Get a repository with the bad parent picked and a clone ready to pull the merge

  $ cp -ar bundle-reuse-enabled peer-bad-delta
  $ hg clone peer-bad-delta local-pre-pull --rev `cat large.node` --rev `cat small.node` --quiet
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=0: delta-base=0 * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=1: delta-base=0 * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=2: delta-base=0 * (glob)

Check the parent order for the file

  $ hg -R local-pre-pull debugdata my-file.txt 2 | wc -l
  \s*1001 (re)
  $ hg -R local-pre-pull debugdata my-file.txt 1 | wc -l
  \s*1200 (re)

Pull with no value (so the default)
-----------------------------------

default is to reuse the (bad) delta

  $ cp -ar local-pre-pull local-no-value
  $ hg -R local-no-value pull --quiet
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=3: delta-base=2 * (glob)

Pull with explicitly the default
--------------------------------

default is to reuse the (bad) delta

  $ cp -ar local-pre-pull local-default
  $ hg -R local-default pull --quiet --config 'paths.default:delta-reuse-policy=default'
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=3: delta-base=2 * (glob)

Pull with no-reuse
------------------

We don't reuse the base, so we get a better delta

  $ cp -ar local-pre-pull local-no-reuse
  $ hg -R local-no-reuse pull --quiet --config 'paths.default:delta-reuse-policy=no-reuse'
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=3: delta-base=1 * (glob)

Pull with try-base
------------------

We requested to use the (bad) delta

  $ cp -ar local-pre-pull local-try-base
  $ hg -R local-try-base pull --quiet --config 'paths.default:delta-reuse-policy=try-base'
  DBG-DELTAS: CHANGELOG: * (glob)
  DBG-DELTAS: MANIFESTLOG: * (glob)
  DBG-DELTAS: FILELOG:my-file.txt: rev=3: delta-base=2 * (glob)