#!/bin/sh

. ${top_srcdir-.}/tests/common.sh

mkdir dir
cat << EOF > dir/file.orig
-- 
EOF
cat << EOF > new1
a
EOF
cat << EOF > new2
-- 
EOF

cp new1 dir/file
${DIFF} -u dir/file.orig dir/file > patch1
cp new2 dir/file
${DIFF} -u dir/file.orig dir/file > patch2
${INTERDIFF} patch1 patch2 2>errors > patch1-2 || exit 1
[ -s errors ] && exit 1
mkdir test
cp new1 test/file
cd test
${PATCH} < ../patch1-2 || exit 1
cd ..
cmp new2 test/file || exit 1
cd test
${PATCH} -R < ../patch1-2
cd ..
cmp new1 test/file || exit 1

mv new1 tmp
mv new2 new1
mv tmp new2
cp new1 dir/file
${DIFF} -u dir/file.orig dir/file > patch3
cp new2 dir/file
${DIFF} -u dir/file.orig dir/file > patch4
${INTERDIFF} patch3 patch4 2>errors > patch3-4 || exit 1
[ -s errors ] && exit 1
cp new1 test/file
cd test
${PATCH} < ../patch3-4 || exit 1
cd ..
cmp new2 test/file || exit 1
cd test
${PATCH} -R < ../patch3-4
cd ..
cmp new1 test/file || exit 1