tests/test-rename-merge2

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

mkdir -p t
cd t

cat <<EOF > merge
import sys, os
f = open(sys.argv[1], "wb")
f.write("merge %s %s %s" % (sys.argv[1], sys.argv[2], sys.argv[3]))
f.close()
EOF
HGMERGE="python ../merge"; export HGMERGE

# perform a test merge with possible renaming
#
# args:
# $1 = action in local branch
# $2 = action in remote branch
# $3 = action in working dir
# $4 = expected result
tm()
{
    mkdir t
    cd t
    hg init
    echo "[merge]" >> .hg/hgrc
    echo "followcopies = 1" >> .hg/hgrc

    # base
    echo base > a
    echo base > rev # used to force commits
    hg add a rev
    hg ci -m "base" -d "0 0"

    # remote
    echo remote > rev
    if [ "$2" != "" ] ; then $2 ; fi
    hg ci -m "remote" -d "0 0"

    # local
    hg co -q 0
    echo local > rev
    if [ "$1" != "" ] ; then $1 ; fi
    hg ci -m "local" -d "0 0"

    # working dir
    echo local > rev
    if [ "$3" != "" ] ; then $3 ; fi

    # merge
    echo "--------------"
    echo "test L:$1 R:$2 W:$3 - $4"
    echo "--------------"
    hg merge -y --debug --traceback

    echo "--------------"
    hg status -camC -X rev

    hg ci -m "merge" -d "0 0"

    echo "--------------"
    echo

    cd ..
    rm -r t
}

up() {
    cp rev $1
    hg add $1 2> /dev/null
    if [ "$2" != "" ] ; then
	cp rev $2
	hg add $2 2> /dev/null
    fi
}

uc() { up $1; hg cp $1 $2; } # update + copy
um() { up $1; hg mv $1 $2; }
nc() { hg cp $1 $2; } # just copy
nm() { hg mv $1 $2; } # just move

tm "up a  " "nc a b" "      " "1  get local a to b"
tm "nc a b" "up a  " "      " "2  get rem change to a and b"
tm "up a  " "nm a b" "      " "3  get local a change to b, remove a"
tm "nm a b" "up a  " "      " "4  get remote change to b"
tm "      " "nc a b" "      " "5  get b"
tm "nc a b" "      " "      " "6  nothing"
tm "      " "nm a b" "      " "7  get b"
tm "nm a b" "      " "      " "8  nothing"
tm "um a b" "um a b" "      " "9  do merge with ancestor in a"
#tm "um a c" "um x c" "      " "10 do merge with no ancestor"
tm "nm a b" "nm a c" "      " "11 get c, keep b"
tm "nc a b" "up b  " "      " "12 merge b no ancestor"
tm "up b  " "nm a b" "      " "13 merge b no ancestor"
tm "nc a b" "up a b" "      " "14 merge b no ancestor"
tm "up b  " "nm a b" "      " "15 merge b no ancestor, remove a"
tm "nc a b" "up a b" "      " "16 get a, merge b no ancestor"
tm "up a b" "nc a b" "      " "17 keep a, merge b no ancestor"
tm "nm a b" "up a b" "      " "18 merge b no ancestor"
tm "up a b" "nm a b" "      " "19 merge b no ancestor, prompt remove a"
tm "up a  " "um a b" "      " "20 merge a and b to b, remove a"
tm "um a b" "up a  " "      " "21 merge a and b to b"
#tm "nm a b" "um x a" "      " "22 get a, keep b"
tm "nm a b" "up a c" "      " "23 get c, keep b"