tests/test-merge-local

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

hg init

echo "# revision 0"
echo "unchanged" > unchanged
echo "remove me" > remove
echo "copy me" > copy
echo "move me" > move
for i in 1 2 3 4 5 6 7 8 9; do
    echo "merge ok $i" >> zzz1_merge_ok
done
echo "merge bad" > zzz2_merge_bad
hg ci -Am "revision 0" -d "1000000 0"

echo "# revision 1"
hg rm remove
hg mv move moved
hg cp copy copied
echo "added" > added
hg add added
echo "new first line" > zzz1_merge_ok
hg cat zzz1_merge_ok >> zzz1_merge_ok
echo "new last line" >> zzz2_merge_bad
hg ci -m "revision 1" -d "1000000 0"

echo "# local changes to revision 0"
hg co 0
echo "new last line" >> zzz1_merge_ok
echo "another last line" >> zzz2_merge_bad
hg diff --nodates | grep "^[+-][^<>]"
hg st

echo "# local merge with bad merge tool"
HGMERGE=false hg co
hg co 0
hg diff --nodates | grep "^[+-][^<>]"
hg st

echo "# local merge with conflicts"
hg co
hg co 0
hg diff --nodates | grep "^[+-][^<>]"
hg st

echo "# local merge without conflicts"
hg revert zzz2_merge_bad
hg co
hg diff --nodates | grep "^[+-][^<>]"
hg st