tests/test-debug-revlog-stats.t

persistent-nodemap: respect the mmap setting when refreshing data

After writing updated data, we reload the in-memory data. However, that logic
was… wrong. We were doing file read when mmap was requested and when the
configuration was requesting to not use mmap… we were using it.

This should now be fine.

Force revlog max inline value to be smaller than default

  $ mkdir $TESTTMP/ext
  $ cat << EOF > $TESTTMP/ext/small_inline.py
  > from mercurial import revlog
  > revlog._maxinline = 8
  > EOF

  $ cat << EOF >> $HGRCPATH
  > [extensions]
  > small_inline=$TESTTMP/ext/small_inline.py
  > EOF

  $ hg init repo
  $ cd repo

Try on an empty repository

  $ hg debug-revlog-stats
  rev-count   data-size inl type      target 

  $ mkdir folder
  $ touch a b folder/c folder/d
  $ hg commit -Aqm 0
  $ echo "text" > a
  $ hg rm b
  $ echo "longer string" > folder/d
  $ hg commit -Aqm 1

Differences in data size observed with pure is due to different compression
algorithms

  $ hg debug-revlog-stats
  rev-count   data-size inl type      target 
          2         138 no  changelog  (no-pure !)
          2         137 no  changelog  (pure !)
          2         177 no  manifest   (no-pure !)
          2         168 no  manifest   (pure !)
          2           6 yes file      a
          1           0 yes file      b
          1           0 yes file      folder/c
          2          15 no  file      folder/d

Test 'changelog' command argument

  $ hg debug-revlog-stats -c
  rev-count   data-size inl type      target 
          2         138 no  changelog  (no-pure !)
          2         137 no  changelog  (pure !)

Test 'manifest' command argument

  $ hg debug-revlog-stats -m
  rev-count   data-size inl type      target 
          2         177 no  manifest   (no-pure !)
          2         168 no  manifest   (pure !)

Test 'file' command argument

  $ hg debug-revlog-stats -f
  rev-count   data-size inl type      target 
          2           6 yes file      a
          1           0 yes file      b
          1           0 yes file      folder/c
          2          15 no  file      folder/d

Test multiple command arguments

  $ hg debug-revlog-stats -cm
  rev-count   data-size inl type      target 
          2         138 no  changelog  (no-pure !)
          2         137 no  changelog  (pure !)
          2         177 no  manifest   (no-pure !)
          2         168 no  manifest   (pure !)