view tests/test-push-warn @ 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

mkdir a
cd a
hg init
echo foo > t1
hg add t1
hg commit -m "1" -d "1000000 0"

cd ..
hg clone a b

cd a
echo foo > t2
hg add t2
hg commit -m "2" -d "1000000 0"

cd ../b
echo foo > t3
hg add t3
hg commit -m "3" -d "1000000 0"

hg push ../a
hg pull ../a
hg push ../a
hg merge
hg commit -m "4" -d "1000000 0"
hg push ../a
cd ..

hg init c
cd c
for i in 0 1 2; do
    echo $i >> foo
    hg ci -Am $i -d "1000000 0"
done
cd ..

hg clone c d
cd d
for i in 0 1; do
    hg co -C $i
    echo d-$i >> foo
    hg ci -m d-$i -d "1000000 0"
done

HGMERGE=true hg merge 3
hg ci -m c-d -d "1000000 0"

hg push ../c; echo $?
hg push -r 2 ../c; echo $?
hg push -r 3 ../c; echo $?
hg push -r 3 -r 4 ../c; echo $?
hg push -f -r 3 -r 4 ../c; echo $?
hg push -r 5 ../c; echo $?

# issue 450
hg init ../e
hg push -r 0 ../e ; echo $?
hg push -r 1 ../e ; echo $?

cd ..

# issue 736
echo % issue 736
hg init f
cd f
hg -q branch a
echo 0 > foo
hg -q ci -d "1000000 0" -Am 0
echo 1 > foo
hg -q ci -d "1000000 0" -m 1
hg -q up 0
echo 2 > foo
hg -q ci -d "1000000 0" -m 2
hg -q up 0
hg -q branch b
echo 3 > foo
hg -q ci -d "1000000 0" -m 3
cd ..

hg -q clone f g
cd g

echo % push on existing branch and new branch
hg -q up 1
echo 4 > foo
hg -q ci -d "1000000 0" -m 4
hg -q up 0
echo 5 > foo
hg -q branch c
hg -q ci -d "1000000 0" -m 5
hg push -r 4 -r 5 ../f; echo $?

echo % fail on multiple head push
hg -q up 1
echo 6 > foo
hg -q ci -d "1000000 0" -m 6
hg push -r 4 -r 6 ../f; echo $?

echo % push replacement head on existing branches
hg -q up 3
echo 7 > foo
hg -q ci -d "1000000 0" -m 7
hg push -r 6 -r 7 ../f; echo $?

echo % merge of branch a to other branch b followed by unrelated push on branch a
hg -q up 6
HGMERGE=true hg -q merge 7
hg -q ci -d "1000000 0" -m 8
hg -q up 7
echo 9 > foo
hg -q ci -d "1000000 0" -m 9
hg push -r 8 ../f; echo $?
hg push -r 9 ../f; echo $?

echo % cheating the counting algorithm
hg -q up 8
HGMERGE=true hg -q merge 2
hg -q ci -d "1000000 0" -m 10
hg -q up 1
echo 11 > foo
hg -q ci -d "1000000 0" -m 11
hg push -r 10 -r 11 ../f; echo $?

echo % checking prepush logic does not allow silently pushing multiple new heads
cd ..
hg init h
echo init > h/init
hg -R h ci -Am init
echo a > h/a
hg -R h ci -Am a
hg clone h i
hg -R h up 0
echo b > h/b
hg -R h ci -Am b
hg -R i up 0
echo c > i/c
hg -R i ci -Am c
hg -R i push h
echo

echo % check prepush logic with merged branches
hg init j
hg -R j branch a
echo init > j/foo
hg -R j ci -Am init
hg clone j k
echo a1 > j/foo
hg -R j ci -m a1
hg -R k branch b
echo b > k/foo
hg -R k ci -m b
hg -R k up 0
hg -R k merge b
hg -R k ci -m merge
hg -R k push -r a j
echo

exit 0