view tests/test-revlog-group-emptyiter.t @ 23254:d23834b871ac

debugrevlog: fix computing chain length in debugrevlog -d

The chain length was computed correctly only when generaldelta
feature was enabled. Now it's fixed.

When generaldelta is disabled the base revision in revlog index is not
the revision we have delta against - it's always previous revision.

Instead of incorrect chainbaseandlen in command.py we are now using two
single-responsibility functions in revlog.py:
 - chainbase(rev)
 - chainlen(rev)
Only chainlen(rev) was missing so it was written to mimic the way the
chain of deltas is actually found during file reconstruction.

Issue1678: IndexError when pushing

setting up base repo
  $ hg init a
  $ cd a
  $ touch a
  $ hg ci -Am a
  adding a
  $ cd ..

cloning base repo
  $ hg clone a b
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ cd b

setting up cset to push
  $ hg up null
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ touch a
different msg so we get a clog new entry
  $ hg ci -Am b
  adding a
  created new head

pushing
  $ hg push -f ../a
  pushing to ../a
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 0 changes to 0 files (+1 heads)

  $ cd ..