view tests/test-merge-types @ 10251:a19d2993385d stable

subrepo: fix merging of already merged subrepos (issue1986)

This fixes a bug seen when merging a main repo which contains a subrepo when
both repos have been merged before. Each repo (main and sub) has two
branches, both of which have been merged before.

In a subrepo, if the revision to merge to is an ancestor of the current rev,
then the merge should be a noop.

Test provided by Steve Losh.

#!/bin/sh

hg init
echo a > a
hg ci -Amadd       # 0

chmod +x a
hg ci -mexecutable # 1

hg up 0
rm a
ln -s symlink a
hg ci -msymlink    # 2
hg merge --debug

echo % symlink is local parent, executable is other

if [ -h a ]; then
    echo a is a symlink
    $TESTDIR/readlink.py a
elif [ -x a ]; then
    echo a is executable
else
    echo "a has no flags (default for conflicts)"
fi

hg update -C 1
hg merge --debug

echo % symlink is other parent, executable is local

if [ -h a ]; then
    echo a is a symlink
    $TESTDIR/readlink.py a
elif [ -x a ]; then
    echo a is executable
else
    echo "a has no flags (default for conflicts)"
fi