view tests/test-convert-bzr-ghosts.t @ 36526:7cc4a9b9732a

wireprotoserver: support logging SSH server I/O to a file descriptor

We will soon introduce a debug command and tests for low-level I/O
behavior of the SSH wire protocol.

To facilitate this, we need to instrument the SSH server so it
can log its I/O as events occur.

We teach the SSH server to convert its stdout and stderr file objects
into file object proxies. We configure these proxies to log to a
file descriptor whose file number is specified via a config option.
The idea is to have a future debug command start the SSH server
process with access to an extra file descriptor that can be used
by the server process to log I/O. Monitoring only the write I/O
will be more robust than monitoring both writes and reads from the
client process because read operations are not deterministic. This
will matter for tests that capture raw I/O activity.

Differential Revision: https://phab.mercurial-scm.org/D2463

#require bzr

  $ . "$TESTDIR/bzr-definitions"
  $ cat > ghostcreator.py <<EOF
  > import sys
  > from bzrlib import workingtree
  > wt = workingtree.WorkingTree.open('.')
  > 
  > message, ghostrev = sys.argv[1:]
  > wt.set_parent_ids(wt.get_parent_ids() + [ghostrev])
  > wt.commit(message)
  > EOF

ghost revisions

  $ mkdir test-ghost-revisions
  $ cd test-ghost-revisions
  $ bzr init -q source
  $ cd source
  $ echo content > somefile
  $ bzr add -q somefile
  $ bzr commit -q -m 'Initial layout setup'
  $ echo morecontent >> somefile
  $ $PYTHON ../../ghostcreator.py 'Commit with ghost revision' ghostrev
  $ cd ..
  $ hg convert source source-hg
  initializing destination source-hg repository
  scanning source...
  sorting...
  converting...
  1 Initial layout setup
  0 Commit with ghost revision
  $ glog -R source-hg
  o  1@source "Commit with ghost revision" files: somefile
  |
  o  0@source "Initial layout setup" files: somefile
  

  $ cd ..