git/t/t7602-merge-octopus-many.sh
Junio C Hamano e78cbf8cbb builtin/merge.c: reduce parents early
Instead of waiting until we record the parents of resulting merge, reduce
redundant parents (including our HEAD) immediately after reading them.

The change to t7602 illustrates the essence of the effect of this change.
The octopus merge strategy used to be fed with redundant commits only to
discard them as "up-to-date", but we no longer feed such redundant commits
to it and the affected test degenerates to a regular two-head merge.

And obviously the known-to-be-broken test in t6028 is now fixed.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-04-17 17:15:05 -07:00

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#!/bin/sh
test_description='git merge
Testing octopus merge with more than 25 refs.'
. ./test-lib.sh
test_expect_success 'setup' '
echo c0 > c0.c &&
git add c0.c &&
git commit -m c0 &&
git tag c0 &&
i=1 &&
while test $i -le 30
do
git reset --hard c0 &&
echo c$i > c$i.c &&
git add c$i.c &&
git commit -m c$i &&
git tag c$i &&
i=`expr $i + 1` || return 1
done
'
test_expect_success 'merge c1 with c2, c3, c4, ... c29' '
git reset --hard c1 &&
i=2 &&
refs="" &&
while test $i -le 30
do
refs="$refs c$i"
i=`expr $i + 1`
done &&
git merge $refs &&
test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
i=1 &&
while test $i -le 30
do
test "$(git rev-parse c$i)" = "$(git rev-parse HEAD^$i)" &&
i=`expr $i + 1` || return 1
done &&
git diff --exit-code &&
i=1 &&
while test $i -le 30
do
test -f c$i.c &&
i=`expr $i + 1` || return 1
done
'
cat >expected <<\EOF
Trying simple merge with c2
Trying simple merge with c3
Trying simple merge with c4
Merge made by the 'octopus' strategy.
c2.c | 1 +
c3.c | 1 +
c4.c | 1 +
3 files changed, 3 insertions(+)
create mode 100644 c2.c
create mode 100644 c3.c
create mode 100644 c4.c
EOF
test_expect_success 'merge output uses pretty names' '
git reset --hard c1 &&
git merge c2 c3 c4 >actual &&
test_cmp actual expected
'
cat >expected <<\EOF
Merge made by the 'recursive' strategy.
c5.c | 1 +
1 file changed, 1 insertion(+)
create mode 100644 c5.c
EOF
test_expect_success 'merge reduces irrelevant remote heads' '
GIT_MERGE_VERBOSITY=0 git merge c4 c5 >actual &&
test_cmp expected actual
'
cat >expected <<\EOF
Fast-forwarding to: c1
Trying simple merge with c2
Merge made by the 'octopus' strategy.
c1.c | 1 +
c2.c | 1 +
2 files changed, 2 insertions(+)
create mode 100644 c1.c
create mode 100644 c2.c
EOF
test_expect_success 'merge fast-forward output uses pretty names' '
git reset --hard c0 &&
git merge c1 c2 >actual &&
test_cmp actual expected
'
test_done