merge: fix a copy detection bug (issue672)
When merging rev1 and rev2, we want to search for copies that happened
in rev1 but not in rev2 and vice-versa. We were starting the search at
rev1/rev2 and then going back, stopping as soon as we reached the revno
of the ancestor, but that can miss some cases (see the new
test-issue672).
Now we calculate the revisions that are ancestors of rev1 or rev2 (but
not both) and make sure the search doesn't stop too early.
Simplified test provided by mpm, based on a test case provided by
Edward Lee.
#!/bin/sh
cp "$TESTDIR"/printenv.py .
# This test tries to exercise the ssh functionality with a dummy script
cat <<EOF > dummyssh
import sys
import os
os.chdir(os.path.dirname(sys.argv[0]))
if sys.argv[1] != "user@dummy":
sys.exit(-1)
if not os.path.exists("dummyssh"):
sys.exit(-1)
os.environ["SSH_CLIENT"] = "127.0.0.1 1 2"
log = open("dummylog", "ab")
log.write("Got arguments")
for i, arg in enumerate(sys.argv[1:]):
log.write(" %d:%s" % (i+1, arg))
log.write("\n")
log.close()
r = os.system(sys.argv[2])
sys.exit(bool(r))
EOF
echo "# creating 'remote'"
hg init remote
cd remote
echo this > foo
echo this > fooO
hg ci -A -m "init" -d "1000000 0" foo fooO
echo '[server]' > .hg/hgrc
echo 'uncompressed = True' >> .hg/hgrc
echo '[hooks]' >> .hg/hgrc
echo 'changegroup = python ../printenv.py changegroup-in-remote 0 ../dummylog' >> .hg/hgrc
cd ..
echo "# repo not found error"
hg clone -e "python ./dummyssh" ssh://user@dummy/nonexistent local
echo "# clone remote via stream"
hg clone -e "python ./dummyssh" --uncompressed ssh://user@dummy/remote local-stream 2>&1 | \
sed -e 's/[0-9][0-9.]*/XXX/g' -e 's/[KM]\(B\/sec\)/X\1/'
cd local-stream
hg verify
cd ..
echo "# clone remote via pull"
hg clone -e "python ./dummyssh" ssh://user@dummy/remote local
echo "# verify"
cd local
hg verify
echo '[hooks]' >> .hg/hgrc
echo 'changegroup = python ../printenv.py changegroup-in-local 0 ../dummylog' >> .hg/hgrc
echo "# empty default pull"
hg paths
hg pull -e "python ../dummyssh"
echo "# local change"
echo bleah > foo
hg ci -m "add" -d "1000000 0"
echo "# updating rc"
echo "default-push = ssh://user@dummy/remote" >> .hg/hgrc
echo "[ui]" >> .hg/hgrc
echo "ssh = python ../dummyssh" >> .hg/hgrc
echo "# find outgoing"
hg out ssh://user@dummy/remote
echo "# find incoming on the remote side"
hg incoming -R ../remote -e "python ../dummyssh" ssh://user@dummy/local
echo "# push"
hg push
cd ../remote
echo "# check remote tip"
hg tip
hg verify
hg cat -r tip foo
echo z > z
hg ci -A -m z -d '1000001 0' z
cd ../local
echo r > r
hg ci -A -m z -d '1000002 0' r
echo "# push should succeed"
hg push
cd ..
cat dummylog