tests/test-convert-hg-sink

convert: readd --filemap

To handle merges correctly, this revision adds a filemap_source class
that wraps a converter_source and does the work necessary to calculate
the subgraph we're interested in.

The wrapped converter_source must provide a new getchangedfiles method
that, given a revision rev, and an index N, returns the list of files
that are different in rev and its Nth parent.

The implementation depends on the ability to skip some revisions and to
change the parents field of the commit objects that we returned earlier.

To make the conversion restartable, we assume the revisons in the
revmapfile are topologically sorted.

#!/bin/sh

echo "[extensions]" >> $HGRCPATH
echo "hgext.convert=" >> $HGRCPATH

hg init orig
cd orig
echo foo > foo
echo bar > bar
hg ci -qAm 'add foo and bar' -d '0 0'

hg rm foo
hg ci -m 'remove foo' -d '0 0'

mkdir foo
echo file > foo/file
hg ci -qAm 'add foo/file' -d '0 0'

hg tag -d '0 0' some-tag

hg log
cd ..

hg convert orig new 2>&1 | grep -v 'subversion python bindings could not be loaded'
cd new
hg out ../orig

echo '% dirstate should be empty:'
hg debugstate
hg parents -q

hg up -C
hg copy bar baz
echo '% put something in the dirstate:'
hg debugstate > debugstate
grep baz debugstate

echo '% add a new revision in the original repo'
cd ../orig
echo baz > baz
hg ci -qAm 'add baz'

cd ..
hg convert orig new 2>&1 | grep -v 'subversion python bindings could not be loaded'
cd new
hg out ../orig
echo '% dirstate should be the same (no output below):'
hg debugstate > new-debugstate
diff debugstate new-debugstate

echo '% no copies'
hg up -C
hg debugrename baz